Net + N0-006 (New)

Topic 1, Network Architecture
QUESTION NO: 1
A technician has verified that a recent loss of network connectivity to multiple workstations is due
to a bad CAT5 cable in the server room wall. Which of the following tools can be used to locate its
physical location within the wall?
A. Cable certifier
B. Multimeter
C. Cable tester
D. Toner probe
D
QUESTION NO: 2
Which of the following is used to authenticate remote workers who connect from offsite? (Select
TWO).
A. OSPF
B. VTP trunking
C. Virtual PBX
D. RADIUS
E. 802.1x
D,E
QUESTION NO: 3
Which of the following network infrastructure implementations would be used to support files being
transferred between Bluetooth-enabled smartphones?
A. PAN
B. LAN
C. WLAN
D. MAN
A
QUESTION NO: 4
Which of the following would be used in an IP-based video conferencing deployment? (Select
TWO).
A. RS-232
B. 56k modem
C. Bluetooth
D. Codec
E. SIP
D,E
QUESTION NO: 5
Which of the following helps prevent routing loops?
A. Routing table
B. Default gateway
C. Route summarization
D. Split horizon
D
QUESTION NO: 6
Which of the following is MOST likely to use an RJ-11 connector to connect a computer to an ISP
using a POTS line?
A. Multilayer switch
B. Access point
C. Analog modem
D. DOCSIS modem
C
QUESTION NO: 7
An administrator has a virtualization environment that includes a vSAN and iSCSI switching.
Which of the following actions could the administrator take to improve the performance of data
transfers over iSCSI switches?
A. The administrator should configure the switch ports to auto-negotiate the proper Ethernet
settings.
B. The administrator should configure each vSAN participant to have its own VLAN.
C. The administrator should connect the iSCSI switches to each other over inter-switch links (ISL).
D. The administrator should set the MTU to 9000 on the each of the participants in the vSAN.
D
QUESTION NO: 8
A network topology that utilizes a central device with point-to-point connections to all other devices
is which of the following?
A. Star
B. Ring
C. Mesh
D. Bus
A
QUESTION NO: 9
A technician is connecting a NAS device to an Ethernet network. Which of the following
technologies will be used to encapsulate the frames?
A. HTTPS
B. Fibre channel
C. iSCSI
D. MS-CHAP
C
QUESTION NO: 10
The network install is failing redundancy testing at the MDF. The traffic being transported is a
mixture of multicast and unicast signals. Which of the following would BEST handle the rerouting
caused by the disruption of service?
A. Layer 3 switch
B. Proxy server
C. Layer 2 switch
D. Smart hub
A
QUESTION NO: 11
A company wants to create highly available datacenters. Which of the following will allow the
company to continue to maintain an Internet presence at all sites in the event that a WAN circuit at
one site goes down?
A. Load balancer
B. VRRP
C. OSPF
D. BGP
D
QUESTION NO: 12
A training class is being held in an auditorium. Hard-wired connections are required for all laptops
that will be used. The network technician must add a switch to the room through which the laptops
will connect for full network access. Which of the following must the technician configure on a
switch port, for both switches, in order to create this setup?
A. DHCP
B. Split horizon
C. CIDR
D. TRUNK
D
QUESTION NO: 13
Which of the following communication technologies would MOST likely be used to increase
bandwidth over an existing fiber optic network by combining multiple signals at different
wavelengths?
A. DWDM
B. SONET
C. ADSL
D. LACP
A
QUESTION NO: 14
Which of the following WAN technologies is associated with high latency?
A. T1
B. Satellite
C. Cable
D. OCx
B
QUESTION NO: 15
Which of the following provides accounting, authorization, and authentication via a centralized
privileged database, as well as, challenge/response and password encryption?
A. Multifactor authentication
B. ISAKMP
C. TACACS+
D. Network access control
C
QUESTION NO: 16
Which of the following is used to define how much bandwidth can be used by various protocols on
the network?
A. Traffic shaping
B. High availability
C. Load balancing
D. Fault tolerance
A
QUESTION NO: 17
Which of the following network topologies has a central, single point of failure?
A. Ring
B. Star
C. Hybrid
D. Mesh
B
QUESTION NO: 18
A technician is helping a SOHO determine where to install the server. Which of the following
should be considered FIRST?
A. Compatibility requirements
B. Environment limitations
C. Cable length
D. Equipment limitations
B
QUESTION NO: 19
When convergence on a routed network occurs, which of the following is true?
A. All routers are using hop count as the metric
B. All routers have the same routing table
C. All routers learn the route to all connected networks
D. All routers use route summarization
C
QUESTION NO: 20
A technician has been given a list of requirements for a LAN in an older building using CAT6
cabling. Which of the following environmental conditions should be considered when deciding
whether or not to use plenum-rated cables?
A. Workstation models
B. Window placement
C. Floor composition
D. Ceiling airflow condition
D
QUESTION NO: 21
A company has a new offering to provide access to their product from a central location rather
than clients internally hosting the product on the client network. The product contains sensitive
corporate information that should not be accessible from one client to another. This is an example
of which of the following?
A. Public SaaS
B. Private SaaS
C. Hybrid IaaS
D. Community IaaS
B
QUESTION NO: 22
Which of the following refers to a network that spans several buildings that are within walking
distance of each other?
A. CAN
B. WAN
C. PAN
D. MAN
A
QUESTION NO: 23
An administrator notices an unused cable behind a cabinet that is terminated with a DB-9
connector. Which of the following protocols was MOST likely used on this cable?
A. RS-232
B. 802.3
C. ATM
D. Token ring
A
QUESTION NO: 24
Which of the following describes an IPv6 address of ::1?
A. Broadcast
B. Loopback
C. Classless
D. Multicast
B
QUESTION NO: 25
A SQL server needs several terabytes of disk space available to do an uncompressed backup of a
database. Which of the following devices would be the MOST cost efficient to use for this backup?
A. iSCSI SAN
B. FCoE SAN
C. NAS
D. USB flash drive
C
QUESTION NO: 26
A technician needs to set aside addresses in a DHCP pool so that certain servers always receive
the same address. Which of the following should be configured?
A. Leases
B. Helper addresses
C. Scopes
D. Reservations
D
QUESTION NO: 27
Which of the following network elements enables unified communication devices to connect to and
traverse traffic onto the PSTN?
A. Access switch
B. UC gateway
C. UC server
D. Edge router
B
Topic 2, Network Operations
QUESTION NO: 28
A network technician receives the following alert from a network device:
“High utilizations threshold exceeded on gi1/0/24 : current value 9413587.54”
Which of the following is being monitored to trigger the alarm?
A. Speed and duplex mismatch
B. Wireless channel utilization
C. Network device CPU
D. Network device memory
E. Interface link status
E
QUESTION NO: 29
A technician is configuring a managed switch and needs to enable 802.3af. Which of the following
should the technician enable?
A. PoE
B. Port bonding
C. VLAN
D. Trunking
A
QUESTION NO: 30
Which of the following protocols must be implemented in order for two switches to share VLAN
information?
A. VTP
B. MPLS
C. STP
D. PPTP
A
QUESTION NO: 31
After a recent breach, the security technician decides the company needs to analyze and
aggregate its security logs. Which of the following systems should be used?
A. Event log
B. Syslog
C. SIEM
D. SNMP
C
QUESTION NO: 32
A network technician is diligent about maintaining all system servers’ at the most current service
pack level available. After performing upgrades, users experience issues with server-based
applications. Which of the following should be used to prevent issues in the future?
A. Configure an automated patching server
B. Virtualize the servers and take daily snapshots
C. Configure a honeypot for application testing
D. Configure a test lab for updates
D
QUESTION NO: 33
A company has implemented the capability to send all log files to a central location by utilizing an
encrypted channel. The log files are sent to this location in order to be reviewed. A recent exploit
has caused the company’s encryption to become unsecure. Which of the following would be
required to resolve the exploit?
A. Utilize a FTP service
B. Install recommended updates
C. Send all log files through SMTP
D. Configure the firewall to block port 22
B
QUESTION NO: 34
The RAID controller on a server failed and was replaced with a different brand. Which of the
following will be needed after the server has been rebuilt and joined to the domain?
A. Vendor documentation
B. Recent backups
C. Physical IP address
D. Physical network diagram
B
QUESTION NO: 35
A network technician has been tasked with designing a WLAN for a small office. One of the
requirements of this design is that it is capable of supporting HD video streaming to multiple
devices. Which of the following would be the appropriate wireless technology for this design?
A. 802.11g
B. 802.11ac
C. 802.11b
D. 802.11a
B
QUESTION NO: 36
A company is experiencing accessibility issues reaching services on a cloud-based system. Which
of the following monitoring tools should be used to locate possible outages?
A. Network analyzer
B. Packet analyzer
C. Protocol analyzer
D. Network sniffer
A
QUESTION NO: 37
A company is experiencing very slow network speeds of 54Mbps. A technician has been hired to
perform an assessment on the existing wireless network. The technician has recommended an
802.11n network infrastructure. Which of the following allows 802.11n to reach higher speeds?
A. MU-MIMO
B. LWAPP
C. PoE
D. MIMO
D
QUESTION NO: 38
It has been determined by network operations that there is a severe bottleneck on the company’s
mesh topology network. The field technician has chosen to use log management and found that
one router is making routing decisions slower than others on the network. This is an example of
which of the following?
A. Network device power issues
B. Network device CPU issues
C. Storage area network issues
D. Delayed responses from RADIUS
B
QUESTION NO: 39
After a company rolls out software updates, Ann, a lab researcher, is no longer able to use lab
equipment connected to her PC. The technician contacts the vendor and determines there is an
incompatibility with the latest IO drivers. Which of the following should the technician perform so
that Ann can get back to work as quickly as possible?
A. Reformat and install the compatible drivers.
B. Reset Ann’s equipment configuration from a backup.
C. Downgrade the PC to a working patch level.
D. Restore Ann’s PC to the last known good configuration.
E. Roll back the drivers to the previous version.
E
QUESTION NO: 40
A system administrator has been tasked to ensure that the software team is not affecting the
production software when developing enhancements. The software that is being updated is on a
very short SDLC and enhancements must be developed rapidly. These enhancements must be
approved before being deployed. Which of the following will mitigate production outages before
the enhancements are deployed?
A. Implement an environment to test the enhancements.
B. Implement ACLs that only allow management access to the enhancements.
C. Deploy an IPS on the production network.
D. Move the software team’s workstations to the DMZ.
A
QUESTION NO: 41
An administrator reassigns a laptop to a different user in the company. Upon delivering the laptop
to the new user, the administrator documents the new location, the user of the device and when
the device was reassigned. Which of the following BEST describes these actions?
A. Network map
B. Asset management
C. Change management
D. Baselines
B
QUESTION NO: 42
Company policies require that all network infrastructure devices send system level information to a
centralized server. Which of the following should be implemented to ensure the network
administrator can review device error information from one central location?
A. TACACS+ server
B. Single sign-on
C. SYSLOG server
D. Wi-Fi analyzer
C
QUESTION NO: 43
A network technician has been tasked to configure a new network monitoring tool that will examine
interface settings throughout various network devices. Which of the following would need to be
configured on each network device to provide that information in a secure manner?
A. S/MIME
B. SYSLOG
C. PGP
D. SNMPv3
E. RSH
D
QUESTION NO: 44
Which of the following would be the result of a user physically unplugging a VoIP phone and
connecting it into another interface with switch port security enabled as the default setting?
A. The VoIP phone would request a new phone number from the unified communications server.
B. The VoIP phone would cause the switch interface, that the user plugged into, to shutdown.
C. The VoIP phone would be able to receive incoming calls but will not be able to make outgoing
calls.
D. The VoIP phone would request a different configuration from the unified communications
server.
B
QUESTION NO: 45
A company is deploying a new wireless network and requires 800Mbps network throughput. Which
of the following is the MINIMUM configuration that would meet this need?
A. 802.11ac with 2 spatial streams and an 80MHz bandwidth
B. 802.11ac with 3 spatial streams and a 20MHz bandwidth
C. 802.11ac with 3 spatial streams and a 40MHz bandwidth
D. 802.11ac with 4 spatial streams and a 160MHz bandwidth
A
QUESTION NO: 46
A technician would like to track the improvement of the network infrastructure after upgrades.
Which of the following should the technician implement to have an accurate comparison?
A. Regression test
B. Speed test
C. Baseline
D. Statement of work
C
QUESTION NO: 47
When two or more links need to pass traffic as if they were one physical link, which of the following
would be used to satisfy the requirement?
A. Port mirroring
B. 802.1w
C. LACP
D. VTP
C
QUESTION NO: 48
A VLAN with a gateway offers no security without the addition of:
A. An ACL.
B. 802.1w.
C. A RADIUS server.
D. 802.1d.
A
QUESTION NO: 49
Network segmentation provides which of the following benefits?
A. Security through isolation
B. Link aggregation
C. Packet flooding through all ports
D. High availability through redundancy
A
QUESTION NO: 50
A network technician must create a wireless link between two buildings in an office park utilizing
the 802.11ac standard. The antenna chosen must have a small physical footprint and minimal
weight as it will be mounted on the outside of the building. Which of the following antenna types is
BEST suited for this solution?
A. Yagi
B. Omni-directional
C. Parabolic
D. Patch
A
QUESTION NO: 51
The administrator’s network has OSPF for the internal routing protocol. One port going out to the
Internet is congested. The data is going out to the Internet, but queues up before sending. Which
of the following would resolve this issue?
Output:
Fast Ethernet 0 is up, line protocol is up
Int ip address is 10.20.130.5/25
MTU 1500 bytes, BW10000 kbit, DLY 100 usec
Reliability 255/255, Tx load 1/255, Rx load 1/255
Encapsulation ospf, loopback not set
Keep alive 10
Half duplex, 100Mb/s, 100 Base Tx/Fx
Received 1052993 broadcasts
0 input errors
983881 packets output, 768588 bytes
0 output errors, 0 collisions, 0 resets
A. Set the loopback address
B. Change the IP address
C. Change the slash notation
D. Change duplex to full
D
QUESTION NO: 52
An outside organization has completed a penetration test for a company. One of the items on the
report is reflecting the ability to read SSL traffic from the web server. Which of the following is the
MOST likely mitigation for this reported item?
A. Ensure patches are deployed
B. Install an IDS on the network
C. Configure the firewall to block traffic on port 443
D. Implement a VPN for employees
A
QUESTION NO: 53
A system administrator wants to update a web-based application to the latest version. Which of
the following procedures should the system administrator perform FIRST?
A. Remove all user accounts on the server
B. Isolate the server logically on the network
C. Block all HTTP traffic to the server
D. Install the software in a test environment
D
QUESTION NO: 54
Multiple students within a networking lab are required to simultaneously access a single switch
remotely. The administrator checks and confirms that the switch can be accessed using the
console, but currently only one student can log in at a time. Which of the following should be done
to correct this issue?
A. Increase installed memory and install a larger flash module.
B. Increase the number of VLANs configured on the switch.
C. Decrease the number of VLANs configured on the switch.
D. Increase the number of virtual terminals available.
D
Topic 3, Network Security
QUESTION NO: 55
A technician needs to install software onto company laptops to protect local running services, from
external threats. Which of the following should the technician install and configure on the laptops if
the threat is network based?
A. A cloud-based antivirus system with a heuristic and signature based engine
B. A network based firewall which blocks all inbound communication
C. A host-based firewall which allows all outbound communication
D. A HIDS to inspect both inbound and outbound network communication
C
QUESTION NO: 56
Which of the following physical security controls prevents an attacker from gaining access to a
network closet?
A. CCTVs
B. Proximity readers
C. Motion sensors
D. IP cameras
B
QUESTION NO: 57
A network technician is performing a wireless survey in the office and discovers a device that was
not installed by the networking team. This is an example of which of following threats?
A. Bluesnarfing
B. DDoS
C. Brute force
D. Rogue AP
D
QUESTION NO: 58
A technician is setting up a computer lab. Computers on the same subnet need to communicate
with each other using peer to peer communication. Which of the following would the technician
MOST likely configure?
A. Hardware firewall
B. Proxy server
C. Software firewall
D. GRE tunneling
C
QUESTION NO: 59
Which of the following concepts are MOST important for a company’s long term health in the event
of a disaster? (Select TWO).
A. Redundancy
B. Implementing acceptable use policy
C. Offsite backups
D. Uninterruptable power supplies
E. Vulnerability scanning
A,C
QUESTION NO: 60
A technician needs to ensure that new systems are protected from electronic snooping of Radio
Frequency emanations. Which of the following standards should be consulted?
A. DWDM
B. MIMO
C. TEMPEST
D. DOCSIS
C
QUESTION NO: 61
Which of the following types of network would be set up in an office so that customers could
access the Internet but not be given access to internal resources such as printers and servers?
A. Quarantine network
B. Core network
C. Guest network
D. Wireless network
C
QUESTION NO: 62
A technician needs to limit the amount of broadcast traffic on a network and allow different
segments to communicate with each other. Which of the following options would satisfy these
requirements?
A. Add a router and enable OSPF.
B. Add a layer 3 switch and create a VLAN.
C. Add a bridge between two switches.
D. Add a firewall and implement proper ACL.
B
QUESTION NO: 63
An attacker has connected to an unused VoIP phone port to gain unauthorized access to a
network. This is an example of which of the following attacks?
A. Smurf attack
B. VLAN hopping
C. Bluesnarfing
D. Spear phishing
B
QUESTION NO: 64
A company has decided to update their usage policy to allow employees to surf the web
unrestricted from their work computers. Which of the following actions should the IT security team
implement to help protect the network from attack as a result of this new policy?
A. Install host-based anti-malware software
B. Implement MAC filtering on all wireless access points
C. Add an implicit deny to the core router ACL
D. Block port 80 outbound on the company firewall
E. Require users to utilize two-factor authentication
A
QUESTION NO: 65
An organization notices a large amount of malware and virus incidents at one satellite office, but
hardly any at another. All users at both sites are running the same company image and receive
the same group policies. Which of the following has MOST likely been implemented at the site with
the fewest security issues?
A. Consent to monitoring
B. Business continuity measures
C. Vulnerability scanning
D. End-user awareness training
D
QUESTION NO: 66
A wireless network technician for a local retail store is installing encrypted access points within the
store for real-time inventory verification, as well as remote price checking capabilities, while
employees are away from the registers. The store is in a fully occupied strip mall that has multiple
neighbors allowing guest access to the wireless networks. There are a finite known number of
approved handheld devices needing to access the store’s wireless network. Which of the following
is the BEST security method to implement on the access points?
A. Port forwarding
B. MAC filtering
C. TLS/TTLS
D. IP ACL
B
QUESTION NO: 67
Ann, a network technician, was asked to remove a virus. Issues were found several levels deep
within the directory structure. To ensure the virus has not infected the .mp4 files in the directory,
she views one of the files and believes it contains illegal material. Which of the following forensics
actions should Ann perform?
A. Erase the files created by the virus
B. Stop and escalate to the proper authorities
C. Check the remaining directories for more .mp4 files
D. Copy the information to a network drive to preserve the evidence
B
QUESTION NO: 68
Which of the following describes a smurf attack?
A. Attack on a target using spoofed ICMP packets to flood it
B. Intercepting traffic intended for a target and redirecting it to another
C. Spoofed VLAN tags used to bypass authentication
D. Forging tags to bypass QoS policies in order to steal bandwidth
A
QUESTION NO: 69
Which of the following technologies is designed to keep systems uptime running in the event of a
disaster?
A. High availability
B. Load balancing
C. Quality of service
D. Caching engines
A
QUESTION NO: 70
Packet analysis reveals multiple GET and POST requests from an internal host to a URL without
any response from the server. Which of the following is the BEST explanation that describes this
scenario?
A. Compromised system
B. Smurf attack
C. SQL injection attack
D. Man-in-the-middle
A
QUESTION NO: 71
A network technician was tasked to respond to a compromised workstation. The technician
documented the scene, took the machine offline, and left the PC under a cubicle overnight. Which
of the following steps of incident handling has been incorrectly performed?
A. Document the scene
B. Forensics report
C. Evidence collection
D. Chain of custody
D
QUESTION NO: 72
During a check of the security control measures of the company network assets, a network
administrator is explaining the difference between the security controls at the company. Which of
the following would be identified as physical security controls? (Select THREE).
A. RSA
B. Passwords
C. Man traps
D. Biometrics
E. Cipher locks
F. VLANs
G. 3DES
C,D,E
QUESTION NO: 73
A technician is installing a surveillance system for a home network. The technician is unsure which
ports need to be opened to allow remote access to the system. Which of the following should the
technician perform?
A. Disable the network based firewall
B. Implicit deny all traffic on network
C. Configure a VLAN on Layer 2 switch
D. Add the system to the DMZ
D
QUESTION NO: 74
A firewall ACL is configured as follows:
10. Deny Any Trust to Any DMZ eq to TCP port 22
11. Allow 10.200.0.0/16 to Any DMZ eq to Any
12. Allow 10.0.0.0/8 to Any DMZ eq to TCP ports 80, 443
13. Deny Any Trust to Any DMZ eq to Any
A technician notices that users in the 10.200.0.0/16 network are unable to SSH into servers in the
DMZ. The company wants 10.200.0.0/16 to be able to use any protocol, but restrict the rest of the
10.0.0.0/8 subnet to web browsing only. Reordering the ACL in which of the following manners
would meet the company’s objectives?
A. 11, 10, 12, 13
B. 12, 10, 11, 13
C. 13, 10, 12, 11
D. 13, 12, 11, 10
A
QUESTION NO: 75
A malicious user floods a switch with frames hoping to redirect traffic to the user’s server. Which of
the following attacks is the user MOST likely using?
A. DNS poisoning
B. ARP poisoning
C. Reflection
D. SYN attack
B
QUESTION NO: 76
Which of the following is a security benefit gained from setting up a guest wireless network?
A. Optimized device bandwidth
B. Isolated corporate resources
C. Smaller ACL changes
D. Reduced password resets
B
QUESTION NO: 77
A company has seen an increase in ransomware across the enterprise. Which of the following
should be implemented to reduce the occurrences?
A. ARP inspection
B. Intrusion detection system
C. Web content filtering
D. Port filtering
C
QUESTION NO: 78
Before logging into the company network, users are required to sign a document that is to be
stored in their personnel file. This standards and policies document is usually called which of the
following?
A. SOP
B. BEP
C. AUP
D. SLA
C
QUESTION NO: 79
A network technician has set up an FTP server for the company to distribute software updates for
their products. Each vendor is provided with a unique username and password for security.
Several vendors have discovered a virus in one of the security updates. The company tested all
files before uploading them but retested the file and found the virus. Which of the following could
the technician do for vendors to validate the proper security patch?
A. Use TFTP for tested and secure downloads
B. Require biometric authentication for patch updates
C. Provide an MD5 hash for each file
D. Implement a RADIUS authentication
C
QUESTION NO: 80
A technician wants to securely manage several remote network devices. Which of the following
should be implemented to securely manage the devices?
A. WPA2
B. IPv6
C. SNMPv3
D. RIPv2
C
Topic 4, Troubleshooting
QUESTION NO: 81
A PC technician has installed a new network printer that was preconfigured with the correct static
IP address, subnet mask, and default gateway. The printer was installed with a new cable and
appears to have link activity, but the printer will not respond to any network communication
attempts. Which of the following is MOST likely the cause of the problem?
A. Damaged cable
B. Duplex mismatch
C. Incorrect VLAN assignment
D. Speed mismatch
C
QUESTION NO: 82
A network technician has detected duplicate IP addresses on the network. After testing the
behavior of rogue DHCP servers, the technician believes that the issue is related to an
unauthorized home router. Which of the following should the technician do NEXT in the
troubleshooting methodology?
A. Document the findings and action taken.
B. Establish a plan to locate the rogue DHCP server.
C. Remove the rogue DHCP server from the network.
D. Identify the root cause of the problem.
B
QUESTION NO: 83
Two weeks after installation, a network technician is now unable to log onto any of the newly
installed company switches. The technician suspects that a malicious user may have changed the
switches’ settings before they were installed in secure areas. Which of the following is the MOST
likely way in which the malicious user gained access to the switches?
A. Via SSH using the RADIUS shared secret
B. Via HTTP using the default username and password
C. Via console using the administrator’s password
D. Via SNMP using the default RO community
B
QUESTION NO: 84
When a client calls and describes a problem with a computer not being able to reach the Internet,
in which of the following places of the OSI model would a technician begin troubleshooting?
A. Transport layer
B. Physical layer
C. Network layer
D. Session layer
B
QUESTION NO: 85
A network technician has been assigned to install an additional router on a wireless network. The
router has a different SSID and frequency. All users on the new access point and the main
network can ping each other and utilize the network printer, but all users on the new router cannot
get to the Internet. Which of the following is the MOST likely cause of this issue?
A. The gateway is misconfigured on the new router.
B. The subnet mask is incorrect on the new router.
C. The gateway is misconfigured on the edge router.
D. The SSID is incorrect on the new router.
A
QUESTION NO: 86
While troubleshooting a network outage, a technician finds a 100-meter fiber cable with a small
service loop and suspects it might be the cause of the outage. Which of the following is MOST
likely the issue?
A. Maximum cable length exceeded
B. Dirty connectors
C. RF interference caused by impedance mismatch
D. Bend radius exceeded
D
QUESTION NO: 87
A technician is troubleshooting a wired device on the network. The technician notices that the link
light on the NIC does not illuminate. After testing the device on a different RJ-45 port, the device
connects successfully. Which of the following is causing this issue?
A. EMI
B. RFI
C. Cross-talk
D. Bad wiring
D
QUESTION NO: 88
An organization requires a second technician to verify changes before applying them to network
devices. When checking the configuration of a network device, a technician determines that a
coworker has improperly configured the AS number on the device. This would result in which of
the following?
A. The OSPF not-so-stubby area is misconfigured
B. Reduced wireless network coverage
C. Spanning tree ports in flooding mode
D. BGP routing issues
D
QUESTION NO: 89
When configuring a new server, a technician requests that an MX record be created in DNS for the
new server, but the record was not entered properly. Which of the following was MOST likely
installed that required an MX record to function properly?
A. Load balancer
B. FTP server
C. Firewall DMZ
D. Mail server
D
QUESTION NO: 90
A company has had several virus infections over the past few months. The infections were caused
by vulnerabilities in the application versions that are being used. Which of the following should an
administrator implement to prevent future outbreaks?
A. Host-based intrusion detection systems
B. Acceptable use policies
C. Incident response team
D. Patch management
D
QUESTION NO: 91
A user calls the help desk and states that he was working on a spreadsheet and was unable to
print it. However, his colleagues are able to print their documents to the same shared printer.
Which of the following should be the FIRST question the helpdesk asks?
A. Does the printer have toner?
B. Are there any errors on the printer display?
C. Is the user able to access any network resources?
D. Is the printer powered up?
C
QUESTION NO: 92
A network technician is using a network monitoring system and notices that every device on a
particular segment has lost connectivity. Which of the following should the network technician do
NEXT?
A. Establish a theory of probable cause.
B. Document actions and findings.
C. Determine next steps to solve the problem.
D. Determine if anything has changed.
D
QUESTION NO: 93
A technician just completed a new external website and setup access rules in the firewall. After
some testing, only users outside the internal network can reach the site. The website responds to
a ping from the internal network and resolves the proper public address. Which of the following
could the technician do to fix this issue while causing internal users to route to the website using
an internal address?
A. Configure NAT on the firewall
B. Implement a split horizon DNS
C. Place the server in the DMZ
D. Adjust the proper internal ACL
B
QUESTION NO: 94
A network administrator recently installed a web proxy server at a customer’s site. The following
week, a system administrator replaced the DNS server overnight. The next day, customers began
having issues accessing public websites. Which of the following will resolve the issue?
A. Update the DNS server with the proxy server information.
B. Implement a split horizon DNS server.
C. Reboot the web proxy and then reboot the DNS server.
D. Put the proxy server on the other side of the demarc.
A
QUESTION NO: 95
While troubleshooting a connectivity issue, a network technician determines the IP address of a
number of workstations is 169.254.0.0/16 and the workstations cannot access the Internet. Which
of the following should the technician check to resolve the problem?
A. Default gateway address
B. Misconfigured DNS
C. DHCP server
D. NIC failure
C
QUESTION NO: 96
A technician recently ran a 20-meter section of CAT6 to relocate a control station to a more central
area on the production floor. Since the relocation, the helpdesk has received complaints about
intermittent operation. During the troubleshooting process, the technician noticed that collisions
are only observed on the switch port during production. Given this information, which of the
following is the cause of the problem?
A. Distance limitation
B. Electromagnetic interference
C. Cross talk
D. Speed and duplex mismatch
B
QUESTION NO: 97
A technician has finished configuring AAA on a new network device. However, the technician is
unable to log into the device with LDAP credentials but is able to do so with a local user account.
Which of the following is the MOST likely reason for the problem?
A. Username is misspelled is the device configuration file
B. IDS is blocking RADIUS
C. Shared secret key is mismatched
D. Group policy has not propagated to the device
C
QUESTION NO: 98
A technician is tasked with connecting a router to a DWDM. The technician connects the router to
the multiplexer and confirms that there is a good signal level. However, the interface on the router
will not come up. Which of the following is the MOST likely cause?
A. The wrong wavelength was demuxed from the multiplexer.
B. The SFP in the multiplexer is malfunctioning.
C. There is a dirty connector on the fiber optic cable.
D. The fiber optic cable is bent in the management tray.
A
QUESTION NO: 99
A network technician is performing a tracert command to troubleshoot a website-related issue. The
following output is received for each hop in the tracert:
1 * * * Request timed out.
2 * * * Request timed out.
3 * * * Request timed out.
The technician would like to see the results of the tracert command. Which of the following will
allow the technician to perform tracert on external sites but not allow outsiders to discover
information from inside the network?
A. Enable split horizon to allow internal tracert commands to pass through the firewall
B. Enable IGMP messages out and block IGMP messages into the network
C. Configure the firewall to allow echo reply in and echo request out of the network
D. Install a backdoor to access the router to allow tracert messages to pass through
C
Topic 5, Industry Standards, Practices, and Network Theory
QUESTION NO: 100
Which of the following describes an area containing a rack that is used to connect customer
equipment to a service provider?
A. 110 block
B. MDF
C. DSU
D. CSU
B
QUESTION NO: 101
A network technician must utilize multimode fiber to uplink a new networking device. Which of the
following Ethernet standards could the technician utilize? (Select TWO).
A. 1000Base-LR
B. 1000Base-SR
C. 1000Base-T
D. 10GBase-LR
E. 10GBase-SR
F. 10GBase-T
B,E
QUESTION NO: 102
A network administrator is using a packet analyzer to determine an issue on the local LAN. Two
separate computers are showing an error message on the screen and are unable to communicate
with other computers in the same lab. The network administrator looks at the following output:
SRC MAC SRC IP DST MAC DST IP
00:1D:1F:AB:10:7D 192.168.1.10:2000 15:BE:9F:AB:10:1D 192.168.1.14:1200
05:DD:1F:AB:10:27 192.168.1.10:1000 22:C7:2F:AB:10:A2 192.168.1.15:1300
Given that all the computers in the lab are directly connected to the same switch, and are not
using any virtualization technology, at which of the following layers of the OSI model is the
problem occurring?
A. Network
B. Application
C. Data link
D. Transport
A
QUESTION NO: 103
Which of the following requires the network administrator to schedule a maintenance window?
A. When a company-wide email notification must be sent.
B. A minor release upgrade of a production router.
C. When the network administrator’s laptop must be rebooted.
D. A major release upgrade of a core switch in a test lab.
B
QUESTION NO: 104
Which of the following is true about the main difference between a web session that uses port 80
and one that uses port 443?
A. Port 80 web sessions often use application-level encryption, while port 443 sessions often use
transport-level encryption.
B. Port 80 web session cannot use encryption, while port 443 sessions are encrypted using web
certificates.
C. Port 80 web sessions can use web application proxies, while port 443 sessions cannot traverse
web application proxies.
D. Port 80 web sessions are prone to man-in-the-middle attacks, while port 443 sessions are
immune from man-in-the-middle attacks.
A
QUESTION NO: 105
The management team wants to set up a wireless network in their office but all of their phones
operate at the 2.4 GHz frequency. They need a wireless network that would be able to operate at
a higher frequency than their phones. Which of following standards should be used?
A. 802.11a
B. 802.11b
C. 802.11g
D. 802.1x
A
QUESTION NO: 106
Which of the following will negotiate standoff timers to allow multiple devices to communicate on
congested network segments?
A. CSMA/CD
B. OSPF
C. DOCSIS
D. BGP
A
QUESTION NO: 107
A service provider is unable to maintain connectivity to several remote sites at predetermined
speeds. The service provider could be in violation of the:
A. MLA.
B. SLA.
C. SOW.
D. MOU.
B
QUESTION NO: 108
A network administrator has created a virtual machine in the cloud. The technician would like to
connect to the server remotely using RDP. Which of the following default ports needs to be
opened?
A. 445
B. 3389
C. 5004
D. 5060
B
QUESTION NO: 109
Which of the following is an example of an IPv4 address?
A. 192:168:1:55
B. 192.168.1.254
C. 00:AB:FA:B1:07:34
D. ::1
B
QUESTION NO: 110
Which of the following does a network technician need to implement if a change is unsuccessful
within the approved maintenance window?
A. Configuration procedures
B. Stakeholder notification
C. Impact analysis
D. Rollback procedure
D
QUESTION NO: 111
Which of the following is the main difference between TCP and UDP?
A. TCP data flows in two directions, while UDP data flows from server to client.
B. The TCP header implements flags, while the UDP header does not.
C. The TCP header implements checksum, while the UDP header does not.
D. TCP connections can be secured by stateful firewalls, while UDP connections cannot.
B
QUESTION NO: 112
Which of the following PDUs is used by a connectionless protocol?
A. Frames
B. Segments
C. Streams
D. Datagram
D
QUESTION NO: 113
When troubleshooting a network problem, browsing through the log of a switch, it is discovered
that multiple frames contain errors. In which of the following layers does the problem reside?
(Select TWO).
A. Layer 2
B. Layer 3
C. Layer 5
D. Transport layer
E. Data link
F. Physical layer
A,E
QUESTION NO: 114
A network technician is attempting to locate a switch connected to the fourth floor west side of the
building. Which of the following will allow quick identification of the switch, when looking at a
logical diagram?
A. Building layout
B. Patch panel labeling
C. Packet sniffing
D. Naming conventions
D
QUESTION NO: 115
In an engineering office, all plotters are configured via static IP. Which of the following best
practices will alleviate many issues if equipment moves are required? (Select TWO).
A. Rack monitoring
B. Device placement
C. Wall plate labeling
D. Room numbering
E. Patch panel labeling
C,E
QUESTION NO: 116
Which of the following devices implements CSMA/CA virtually through the RTS/CTS protocols?
A. Firewall
B. Router
C. 802.11 AP
D. Switch
C
QUESTION NO: 117
A user with a 802.11n WLAN card is connected to a SOHO network and is only able to connect at
11 Mbps with full signal strength. Which of the following standards is implemented on the network?
A. 802.11a
B. 802.11ac
C. 802.11b
D. 802.11g
C
QUESTION NO: 118
A network technician is attempting to connect a new host to existing manufacturing equipment on
an Ethernet network. The technician is having issues trying to establish communication between
the old equipment and the new host. The technician checks the cabling for breaks and finds that
the CAT3 cable in use is in perfect condition. Which of the following should the technician check to
ensure the new host will connect?
A. Confirm the new host is using 10GBaseSR due to the manufacturing environment
B. Confirm the new host is compatible with 10BaseT Ethernet
C. Confirm the existing 10Base2 equipment is using the proper frame type
D. Confirm that CSMA/CD is disabled on the Ethernet network
B
QUESTION NO: 119
A customer has engaged a company to improve the availability of all of the customer’s services
and applications, enabling the customer to minimize downtime to a few hours per quarter. Which
of the following will document the scope of the activities the company will provide to the customer,
including the intended outcomes?
A. MLA
B. MOU
C. SOW
D. SLA
C
QUESTION NO: 120
A network technician has just installed a TFTP server on the administrative segment of the
network to store router and switch configurations. After a transfer attempt to the server is made,
the process errors out. Which of the following is a cause of the error?
A. Only FTP can be used to copy configurations from switches
B. Anonymous users were not used to log into the TFTP server
C. An incorrect password was used and the account is now locked
D. Port 69 is blocked on a router between the network segments
D
QUESTION NO: 121
An organization is moving to a new datacenter. During the move, several technicians raise
concerns about a system that could potentially remove oxygen from the server room and result in
suffocation. Which of the following systems are they MOST likely discussing?
A. Fire suppression
B. Mantraps at the entry
C. HVAC
D. UPS and battery backups
A
Topic 6, Mixed Set
QUESTION NO: 122
A technician, Joe, needs to troubleshoot a recently installed NIC. He decides to ping the local
loopback address. Which of the following is a valid IPv4 loopback address?
A. 10.0.0.1
B. 127.0.0.1
C. 172.16.1.1
D. 192.168.1.1
B
QUESTION NO: 123
A host has been assigned the address 169.254.0.1. This is an example of which of the following
address types?
A. APIPA
B. MAC
C. Static
D. Public
A
QUESTION NO: 124
An F-connector is used on which of the following types of cabling?
A. CAT3
B. Single mode fiber
C. CAT5
D. RG6
D
QUESTION NO: 125
After repairing a computer infected with malware, a technician determines that the web browser
fails to go to the proper address for some sites. Which of the following should be checked?
A. Server host file
B. Subnet mask
C. Local hosts file
D. Duplex settings
C
QUESTION NO: 126
A company wants to make sure that users are required to authenticate prior to being allowed on
the network. Which of the following is the BEST way to accomplish this?
A. 802.1x
B. 802.1p
C. Single sign-on
D. Kerberos
A
QUESTION NO: 127
A technician, Joe, has been tasked with assigning two IP addresses to WAN interfaces on
connected routers. In order to conserve address space, which of the following subnet masks
should Joe use for this subnet?
A. /24
B. /32
C. /28
D. /29
E. /30
E
QUESTION NO: 128
Joe, a network technician, is setting up a DHCP server on a LAN segment. Which of the following
options should Joe configure in the DHCP scope, in order to allow hosts on that LAN segment
using dynamic IP addresses, to be able to access the Internet and internal company servers?
(Select THREE).
A. Default gateway
B. Subnet mask
C. Reservations
D. TFTP server
E. Lease expiration time of 1 day
F. DNS servers
G. Bootp
A,B,F
QUESTION NO: 129
An administrator only has telnet access to a remote workstation. Which of the following utilities will
identify if the workstation uses DHCP?
A. tracert
B. ping
C. dig
D. ipconfig
E. netstat
D
QUESTION NO: 130
Which of the following protocols uses label-switching routers and label-edge routers to forward
traffic?
A. BGP
B. OSPF
C. IS-IS
D. MPLS
D
QUESTION NO: 131
A network technician has received a help desk ticket indicating that after the new wireless access
point was installed, all of the media department’s devices are experiencing sporadic wireless
connectivity. All other departments are connecting just fine and the settings on the new access
point were copied from the baseline. Which of the following is a reason why the media department
is not connecting?
A. Wrong SSID
B. Rogue access point
C. Placement
D. Channel mismatch
C
QUESTION NO: 132
A user connects to a wireless network at the office and is able to access unfamiliar SMB shares
and printers. Which of the following has happened to the user?
A. The user is connected using the wrong channel.
B. The user is connected to the wrong SSID.
C. The user is experiencing an EMI issue.
D. The user is connected to the wrong RADIUS server.
B
QUESTION NO: 133
Which of the following network devices use ACLs to prevent unauthorized access into company
systems?
A. IDS
B. Firewall
C. Content filter
D. Load balancer
B
QUESTION NO: 134
Ann, a user, is experiencing an issue with her wireless device. While in the conference area, the
wireless signal is steady and strong. However, at her desk the signal is consistently dropping, yet
the device indicates a strong signal. Which of the following is the MOST likely cause of the issue?
A. Signal-to-noise ratio
B. AP configuration
C. Incorrect SSID
D. Bounce
D
QUESTION NO: 135
A network engineer is troubleshooting an issue with a computer that is unable to connect to the
Internet. The network engineer analyzes the following output from a command line utility:
Network DestinationNetmask Gateway Interface
192.168.1.0 255.255.255.0 192.168.1.254 eth0
192.168.1.10255.255.255.255 192.168.1.10 eth0
127.0.0.1255.0.0.0 On-Link lo
127.0.0.0255.0.0.0 On-Link lo
255.255.255.255255.255.255.255 102.168.1.10 eth0
Which of the following is the reason for the computer issue, given the above output?
A. Wrong default gateway netmask
B. Incorrect default gateway address
C. Default gateway on the wrong interface
D. Missing default gateway
D
QUESTION NO: 136
A network engineer is dispatched to an employee office to troubleshoot an issue with the
employee’s laptop. The employee is unable to connect to local and remote resources. The
network engineer flips the laptop’s wireless switch on to resolve the issue. At which of the
following layers of the OSI model was the issue resolved?
A. Layer 1
B. Layer 2
C. Layer 3
D. Layer 4
E. Layer 7
A
QUESTION NO: 137
A network technician has received comments from several users that cannot reach a particular
website. Which of the following commands would provide the BEST information about the path
taken across the network to this website?
A. ping
B. netstat
C. telnet
D. tracert
D
QUESTION NO: 138
A network technician has detected a personal computer that has been physically connected to the
corporate network. Which of the following commands would the network technician use to locate
this unauthorized computer and determine the interface it is connected to?
A. nbtstat -a
B. show mac address-table
C. show interface status
D. show ip access-list
E. nslookup hostname
B
QUESTION NO: 139
A network technician is troubleshooting a problem at a remote site. It has been determined that
the connection from router A to router B is down. The technician at the remote site re-terminates
the CAT5 cable that connects the two routers as a straight through cable. The cable is then tested
and is plugged into the correct interface. Which of the following would be the result of this action?
A. The normal amount of errors and the connection problem has been resolved.
B. The interface status will indicate that the port is administratively down.
C. The traffic will flow, but with excessive errors.
D. The interface status will show line protocol down.
D
QUESTION NO: 140
After connecting a workstation directly to a small business firewall, a network administrator is
trying to manage it via HTTPS without losing its stored configuration. The only two pieces of
information that the network administrator knows about the firewall are the management interface
MAC address, which is 01:4a:d1:fa:b1:0e, and the administrator’s password. Which of the
following will allow the administrator to log onto the firewall via HTTPS if the management’s IP
address is unknown and the administrator’s workstation IP address is 192.168.0.10/23?
A. Use the reset button on the back of the firewall to restore it to its factory default, and then log
onto
B. Run the following command on the administrator’s workstation: arp -s 192.168.1.200
01:4a:d1:fa:b1:0e
C. Use an SNMP tool to query the firewall properties and determine the correct management IP
address
D. Use a crossover cable to connect to the console port and reconfigure the firewall management
IP to 192.168.0.1
B
QUESTION NO: 141
Which of the following connection types is used to terminate DS3 connections in a
telecommunications facility?
A. 66 block
B. BNC
C. F-connector
D. RJ-11
B
QUESTION NO: 142
A desktop computer is connected to the network and receives an APIPA address but is unable to
reach the VLAN gateway of 10.10.100.254. Other PCs in the VLAN subnet are able to reach the
Internet. Which of the following is MOST likely the source of the problem?
A. 802.1q is not configured on the switch port
B. APIPA has been misconfigured on the VLAN
C. Bad SFP in the PC’s 10/100 NIC
D. OS updates have not been installed
A
QUESTION NO: 143
A technician is setting up a new network and wants to create redundant paths through the
network. Which of the following should be implemented to prevent performance degradation?
A. Port mirroring
B. Spanning tree
C. ARP inspection
D. VLAN
B
QUESTION NO: 144
A network technician is utilizing a network protocol analyzer to troubleshoot issues that a user has
been experiencing when uploading work to the internal FTP server. Which of the following default
port numbers should the technician set the analyzer to highlight when creating a report? (Select
TWO).
A. 20
B. 21
C. 22
D. 23
E. 67
F. 68
G. 69
A,B
QUESTION NO: 145
A network engineer needs to set up a topology that will not fail if there is an outage on a single
piece of the topology. However, the computers need to wait to talk on the network to avoid
congestions. Which of the following topologies would the engineer implement?
A. Star
B. Bus
C. Ring
D. Mesh
C
QUESTION NO: 146
A technician needs to secure web traffic for a new e-commerce website. Which of the following will
secure traffic between a web browser and a website?
A. SSL
B. DNSSEC
C. WPA2
D. MTU
A
QUESTION NO: 147
A network technician is assisting the company with developing a new business continuity plan.
Which of the following would be an appropriate suggestion to add to the plan?
A. Build redundant links between core devices
B. Physically secure all network equipment
C. Maintain up-to-date configuration backups
D. Perform reoccurring vulnerability scans
A
QUESTION NO: 148
A company has changed ISPs for their office and ordered a new 250 Mbps symmetrical Internet
connection. As a result, they have been given a new IP range. The ISP has assigned the company
10.10.150.16 /28. The company gateway router has the following interface configuration facing the
ISP:
Interface A:
IP address: 10.10.150.16
Subnet mask: 255.255.255.240
Default gateway: 10.10.150.32
Speed: 1000 Mbps
Duplex: Auto
State: No Shutdown
None of the workstations at the company are able to access the Internet. Which of the following
are the reasons? (Select TWO).
A. There is a duplex mismatch between the router and ISP.
B. The router interface is turned off.
C. The interface is set to the incorrect speed.
D. The router is configured with the incorrect subnet mask.
E. The router interface is configured with the incorrect IP address.
F. The default gateway is configured incorrectly.
E,F
QUESTION NO: 149
The ability to make access decisions based on an examination of Windows registry settings,
antivirus software, and AD membership status is an example of which of the following NAC features?
A. Quarantine network
B. Persistent agents
C. Posture assessment
D. Non-persistent agents
C
QUESTION NO: 150
A technician is troubleshooting a client’s connection to a wireless network. The client is asked to
run a “getinfo” command to list information about the existing condition.

myClient$ wificard –getinfo
agrCtlRSSI: -72
agrExtRSSI: 0
state: running
op mode: station
lastTxRate: 178
MaxRate: 300
802.11 auth: open
link auth: wpa2-psk
BSSID: 0F:33:AE:F1:02:0A
SSID: CafeWireless
Channel: 149,1

Given this output, which of the following has the technician learned about the wireless network?
(Select TWO).
A. The WAP is using RC4 encryption
B. The WAP is using 802.11a
C. The WAP is using AES encryption
D. The WAP is using the 2.4GHz channel
E. The WAP is using the 5GHz channel
F. The WAP is using 802.11g

C,E
QUESTION NO: 151
A technician has prolonged contact with a thermal compound. Which of the following resources
should be consulted?
A. HCL
B. MSDS
C. SLA
D. HVAC
B