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Network > New Deck 2 > Flashcards

New Deck 2 Flashcards

1
Q

A help desk supervisor discovers the following ticket excerpt while reviewing notes in a customer’s account:

Received report that customer was unable to use the scanner to read barcodes, the internet no longer worked, and the monitor was fuzzy. Arrived on site and began troubleshooting.
Confirmed monitor issue. Replaced VGA cable.
Confirmed scanner failure. Scanner USB cable was unattached. Reattached cable.
Confirmed internet issue. Duplicated on test laptop. Escalated to ISP.

Which of the following BEST describes what the technician was doing?

A. The technician was questioning the obvious.
B. The technician was implementing preventative measures.
C. The technician was approaching multiple problems individually.
D. The technician was determining if anything had changed.

A

The technician was approaching multiple problems individually.

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2
Q

A technician is troubleshooting network connectivity from a wall jack. Readings from a multimeter indicate extremely low ohmic values instead of the rated impedance from the switchport. Which of the following is the MOST likely cause of this issue?

A. Incorrect transceivers
B. Faulty LED
C. Short circuit
D. Upgraded OS version on switch

A

Short circuit

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2
Q

A network administrator implements a group of access points, only changing the SSID, credentials, and IP address. Shortly after, users begin reporting poor quality and video loss while on video calls in the conference room. Which of the following should the administrator do to MOST effectively troubleshoot during business hours?

A. Remove the current antennas and replace them with directional antennas on each AP.
B. Disconnect the AP and move it closer to the conference room.
C. Configure separate channels on APs that are not supporting the conference room.
D. Reboot the switch and each AP at the same time.

A

Configure separate channels on APs that are not supporting the conference room.

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3
Q

A junior network engineer is trying to change the native network ID to a non-default value that can then be applied consistently throughout the network environment. Which of the following issues is the engineer attempting to prevent?

A. DDoS
B. ARP spoofing
C. VLAN hopping
D. Rogue DHCP

A

VLAN hopping

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3
Q

A technician needs to change an incoming fiber line into an RJ45 copper connection for uplinking a new switch. Which of the following would BEST satisfy this requirement?

A. Media converter
B. F-type connector
C. Small form-factor pluggable
D. Punchdown block

A

Media converter

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3
Q

A new engineer at a company is working to understand the network. Which of the following diagrams should the engineer review to understand the paths traffic takes?

A. Physical
B. Logical
C. Wiring
D. Rack

A

Logical

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4
Q

A user is experimenting with audio transmissions and would like the transmissions to reach several specific devices simultaneously over the IP network. The user requests assistance from a network technician to configure the appropriate features within the SOHO. Which of the following should the technician configure to meet the requirements?

A. Unicast
B. Multicast
C. Anycast
D. Broadcast

A

Multicast

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4
Q

A desktop support department has observed slow wireless speeds for a new line of laptops using the organization’s standard image. No other devices have experienced the same issue. Which of the following should the network administrator recommend troubleshooting FIRST to resolve this issue?

A. Increasing wireless signal power
B. Installing a new WAP
C. Changing the protocol associated to the SSID
D. Updating the device wireless drivers

A

Updating the device wireless drivers

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5
Q

A network administration team for a medium-sized business has decided to segment the network, logically separating the finance and marketing teams in order to improve performance for both teams. The finance and marketing teams still need to access resources across the subnets, and the router has a single interface. Which of the following should the administrator configure in order to allow the traffic?

A. Port address translation
B. Classless masking
C. IPv6 tunneling
D. Subinterfaces

A

D. Subinterfaces

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5
Q

A network requirement calls for the network traffic of a specific department within a campus network to be monitored. The network has users from each department located in multiple buildings. Which of the following should be configured to meet this requirement? (Choose two.)

A. MDIX
B. 802.1Q
C. Jumbo frames
D. Port mirroring
E. Flow control
F. LACP

A

802.1Q
Port mirroring

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5
Q

A retail store recently acquired the store next door. The owners would like this store to support Gigabit Ethernet for up to 328ft (100m). Which of the following is the MOST cost-effective solution?

A. Cat5
B. Cat 5e
C. Cat 6
D. Cat 7

A

cat 5e

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6
Q

A wireless technician is working to upgrade the wireless infrastructure for a company. The company currently uses the 802.11g wireless standard on all access points. The company requires backward compatibility and is requesting the least expensive solution. Which of the following should the technician recommend to the company?

A. 802.11a
B. 802.11ac
C. 802.11ax
D. 802.11n

A

802.11n

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7
Q

Which of the following VPN types provides the highest security for a user who travels often but also has the highest bandwidth requirements to provide a satisfactory user experience?

A. Full-tunnel
B. Site-to-site
C. Clientless
D. Split-tunnel

A

Full-tunnel

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7
Q

An employee walked into a secure facility and allowed a newly hired employee to walk in as well. Which of the following is the BEST solution to prevent this from happening again?

A. “No tailgating” sign
B. Awareness training
C. Entry log
D. Camera

A

Awareness training

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8
Q

A network administrator is assisting a user who is unable to access network services by using hostname on Host 1. Another user in the same office is able to access the network services with no issue on Host 2. The network administrator runs a command on the affected machine and the working machine and compares the following output:

Which of the follow should the network administrator change to restore connectivity?

A. Change the default gateway on Host 1 to 192.168.1.1.
B. Change the IPv4 address on Host 2 to 192.168.0.112.
C. Reconfigure the subnet masks on both hosts.
D. Update the DNS server on Host 1 to 192.168.0.53.

A

Update the DNS server on Host 1 to 192.168.0.53.

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9
Q

An administrator is preparing an organization for a potential disaster. The administrator configures the network switches and turns off the equipment in a data center. Which of the following is this scenario an example of?

A. Warm site
B. Cold site
C. Cloud site
D. Hot site

A

Warm site

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9
Q

A company is using a DHCP server with 12-hour leases for its device configurations. A user records the information that the DHCP server provides and uses the information to connect a device with a manual IP set. Over time, the user experiences intermittent connectivity and recurring connection timeouts. Which of the following is the MOST likely cause of the issue?

A. A duplicate IP address is on the network.
B. The user’s device is pointing to an incorrect DNS server.
C. The device is set to use an incorrect subnet.
D. The device is set to use an incorrect gateway.

A

A duplicate IP address is on the network.

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10
Q

Which of the following routing protocols is BEST suited for use on a perimeter router?

A. OSPF
B. RIPv2
C. EIGRP
D. BGP

A

BGP

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11
Q

Which of the following is used to require network devices to authenticate before gaining access to a LAN?

A. 802.1Q
B. 802.1X
C. 802.11ax
D. 802.3af

A

802.1X

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11
Q

A network administrator responds to a support ticket that was submitted by a customer who is having issues connecting to a website inside of the company network. The administrator verifies that the customer could not connect to a website using a URL. Which of the following troubleshooting steps would be BEST for the administrator to take?

A. Check for certificate issues.
B. Contact the ISP.
C. Attempt to connect to the site via IP address.
D. Check the NTP configuration.

A

Attempt to connect to the site via IP address.

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12
Q

A technician is investigating why a PC cannot reach a file server with the IP address 192.168.8.129. Given the following TCP/IP network configuration:

Which of the following configurations on the PC is incorrect?

A. Subnet mask
B. IPv4 address
C. Default gateway
D. IPv6 address

A

Subnet mask

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13
Q

A network technician wants to identify which DNS servers a computer is configured to use. Which of the following commands should the technician use?

A. nbtstat
B. arp
C. nslookup
D. netstat

A

. nslookup

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14
Q

A network technician is investigating a trouble ticket for a user who does not have network connectivity. All patch cables between the wall jacks and computers in the building were upgraded over the weekend from Cat 5 to Cat 6. The newly installed cable is crimped with a TIA/EIA 568A on one end and a TIA/EIA 568B on the other end. Which of the following should the technician do to MOST likely fix the issue?

A. Ensure the switchport has PoE enabled.
B. Crimp the cable as a straight-through cable.
C. Ensure the switchport has STP enabled,
D. Crimp the cable as a rollover cable.

A

Crimp the cable as a straight-through cable.

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15
Q

A network technician is troubleshooting a connection to a local server and has verified that the RDP service is running on the server. After running a command, the technician receives the following output:

Which of the following MOST likely describes the issue?

A. A host-based firewall on the server is blocking the connection.
B. Too many collisions are occurring on the network segment.
C. A DoS attack is occurring locally.
D. A routing loop is in the network.

A

A host-based firewall on the server is blocking the connection.

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15
Q

A Chief Executive Officer (CEO) of a company purchases a new phone that will be used while traveling to different countries. The CEO needs to be able to place outgoing calls and receive incoming calls on the phone using a SIM card. Which of the following cellular technologies does the CEO’s phone need?

A. WDMA
B. CDMA
C. GSM
D. SLA

A

GSM

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16
Q

A network technician receives a support ticket concerning multiple users who are unable to access the company’s shared drive. The switch interface that the shared drive is connected to is displaying the following:

Which of the following is MOST likely the issue?

A. The switchport is shut down.
B. The cable is not plugged in.
C. The loopback is not set.
D. The bandwidth configuration is incorrect.

A

The cable is not plugged in.

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17
Q

Which of the following routing protocols has routes that are classified with an administrative distance of 110?

A. BGP
B. OSPF
C. EIGRP
D. RIP

A

OSPF

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18
Q

A customer calls the help desk to report that users are unable to access any network resources. The issue started earlier in the day when an employee rearranged the wiring closet. A technician goes to the site but does not observe any obvious damage. The statistics output on the switch indicates high CPU usage, and all the lights on the switch are blinking rapidly in unison. Which of the following is the MOST likely explanation for these symptoms?

A. The switch was rebooted and set to run in safe mode.
B. The line between the switch and the upstream router was removed.
C. A cable was looped and created a broadcast storm.
D. A Cat 6 cable from the modem to the router was replaced with Cat 5e.

A

A cable was looped and created a broadcast storm.

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19
Q

A sales team at a company uses a SaaS solution primarily for videoconferencing and a CRM application that connects to a database server in the corporate data center. Which of the following VPN solutions would allow secure, remote access for sales staff to the CRM application without impacting videoconferencing traffic?

A. Clientless
B. Site-to-site
C. Split tunnel
D. Full tunnel

A

Split tunnel

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20
Q

A customer runs a DNS lookup service and needs a network technician to reconfigure the network to improve performance. The customer wants to ensure that servers are accessed based on whichever one is topographically closest to the destination. If the server does not respond, then the next topographically closest server should respond. Which of the following does the technician need to configure to meet the requirements?

A. Multicast addressing
B. Anycast addressing
C. Broadcast addressing
D. Unicast addressing

A

Anycast addressing

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20
Q

Which of the following would a network administrator configure to set NTP settings for a specific subnet within DHCP?

A. Reservation
B. Lease time
C. Scope options
D. Exclusion range

A

Scope options

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20
Q

A network administrator creates a new network, 10.10.0.0/24, on a DHCP server. The administrator wants to ensure that 10.10.0.10-10.10.0.15 are not allocated to other devices. Which of the following features should the administrator configure?

A. Exclusion
B. Reservation
C. Scope
D. Relay

A

Exclusion

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21
Q

Which of the following would MOST likely be used to review disaster recovery information for a system?

A. Business continuity plan
B. Change management
C. System life cycle
D. Standard operating procedures

A

Business continuity plan

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22
Q

A technician needs to allow a device to maintain the same IP address lease based on the physical address of a network card. Which of the following should the technician use?

A. MAC address reservation
B. Static IP address
C. Custom DNS server entry
D. IP address exclusion

A

MAC address reservation

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22
Q

Which of the following demarcation connections would be MOST appropriate to use with a cable modem being installed in a SOHO situation?

A. RG6
B. Cat 6
C. RJ11
D. Multimode fiber

A

RG6

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23
Q

A network technician is investigating why a core switch is logging excessive amounts of data to the syslog server. The running configuration of the switch showed the following logging information:

Which of the following changes should the technician make to BEST fix the issue?

A. Update the logging host IP.
B. Change to asynchronous logging.
C. Stop logging SSH events.
D. Adjust the logging level.

A

Adjust the logging level.

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24
Q

A network technician wants to find the shortest path from one node to every other node in the network. Which of the following algorithms will provide the FASTEST convergence time?

A. A static algorithm
B. A link-state algorithm
C. A distance-vector algorithm
D. A path-vector algorithm

A

A link-state algorithm

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25
Q

After upgrading to a SOHO router that supports Wi-Fi 6, the user determines throughput has not increased. Which of the following is the MOST likely cause of the issue?

A. The wireless router is using an incorrect antenna type.
B. The user’s workstation does not support 802.11ax.
C. The encryption protocol is mismatched.
D. The network is experiencing interference.

A

The user’s workstation does not support 802.11ax.

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26
Q

While using a secure conference call connection over a corporate VPN, a user moves from a cellular connection to a hotel wireless network. Although the wireless connection and the VPN show a connected status, no network connectivity is present. Which of the following is the MOST likely cause of this issue?

A. MAC filtering is configured on the wireless connection.
B. The VPN and the WLAN connection have an encryption protocol mismatch.
C. The WLAN is using a captive portal that requires further authentication.
D. Wireless client isolation is enforced on the WLAN settings.

A

The WLAN is using a captive portal that requires further authentication.

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27
Q

A help desk technician discovers the following note while reviewing tickets in a customer’s account:

Was able to confirm customer’s problem with the system. Will upgrade system to latest version and monitor for further connectivity problems per developer’s instructions.

Which of the following describes what the technician was documenting with this note?

A. The technician was approaching multiple problems individually.
B. The technician was establishing a plan of action and identifying potential effects.
C. The technician was testing a theory to determine the cause.
D. The technician was identifying the problem by gathering information.

A

The technician was establishing a plan of action and identifying potential effects.

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27
Q

A customer has an attached USB printer that needs to be shared with other users. The desktop team set up printer sharing. Now, the network technician needs to obtain the necessary information about the PC and share it with other users so they can connect to the printer. Which of the following commands should the technician use to get the required information? (Choose two.)

A. arp
B. route
C. netstat
D. tcpdump
E. hostname
F. ipconfig

A

E. hostname
F. ipconfig

28
Q

A technician received a report that some users in a large, 30-floor building are having intermittent connectivity issues. Users on each floor have stable connectivity, but do not have connectivity to other floors. Which of the following devices is MOST likely causing the issue?

A. User devices
B. Edge devices
C. Access switch
D. Core switch

A

Core switch

29
Q

The results of a recently completed site survey indicate a significant, undesired RSSI in the parking lot and other exterior areas near the main building. The wireless technician would like to mitigate access to the wireless network in exterior access areas. The current access point settings are listed in the following table:

Which of the following is the BEST step for the technician to take to resolve the issue?

A. Reconfigure AP2 and AP3 for non-overlapping channels.
B. Implement directional antennas on AP1 and AP2.
C. Raise the power settings on AP2 and AP3.
D. Change the SSID on AP1 and AP2.

A

Implement directional antennas on AP1 and AP2

30
Q

A network technician is selecting new network hardware, and availability is the main concern. Which of the following availability concepts should the technician consider?

A. RTO
B. MTTR
C. MTBF
D. RPO

A

MTBF

31
Q

A new company moved into a corporate center. Users in the shared lobby are experiencing disconnects on their mobile devices. Which of the following is the BEST tool a network technician could use to troubleshoot the issue?

A. Port scanner
B. Protocol analyzer
C. NetFlow analyzer
D. Wi-Fi analyzer

A

Wi-Fi analyzer

32
Q

Two companies want to build an encrypted tunnel between them and use a PSK for initial authentication. Which of the following is the BEST protocol for the companies to use?

A. VPN
B. SSL
C. TLS
D. IPSec

A

IPSec

33
Q

A network technician is configuring a wireless access point and wants to only allow company-owned devices to associate with the network. The access point uses PSKs, and a network authentication system does not exist on the network. Which of the following should the technician implement?

A. Captive portal
B. Guest network isolation
C. MAC filtering
D. Geofencing

A

MAC filtering

34
Q

Which of the following network topologies BEST describes a central device connected to multiple independent devices?

A. Mesh
B. Ring
C. Hub-and-spoke
D. Bus

A

Hub-and-spoke

34
Q

Following a fire in a data center, an executive is concerned about the amount of data that must be reentered. Which of the following describes the executive’s concern?

A. RTO
B. MTBF
C. MMTR
D. RPO

A

RPO

35
Q

Which of the following would most likely be considered for an IDF installation in a secure facility?

A. Full-size body scanners
B. Iris scanner
C. RFID badge readers
D. Smart deadbolt

A

RFID badge readers

35
Q

Which of the following routing protocols uses an autonomous system number?

A. IS-IS
B. EIGRP
C. OSPF
D. BGP

A

BGP

35
Q

Users have reported an issue connecting to a server over the network. A workstation was recently added to the network and configured with a shared USB printer. Which of the following is most likely causing the issue?

A. The switch is oversubscribed and cannot handle the additional throughput.
B. The printer is tying up the server with DHCP discover messages.
C. The web server’s back end was designed for only single-threaded applications.
D. The workstation was configured with a static IP that is the same as the server.

A

The workstation was configured with a static IP that is the same as the server.

If a workstation is configured with a static IP address that is the same as the server’s IP address, it can lead to network conflicts and connectivity issues. This is known as an IP address conflict, where two devices on the same network have the same IP address.

36
Q

A technician needs to set up a wireless connection that utilizes MIMO on non-overlapping channels. Which of the following would be the best choice?

A. 802.11a
B. 802.11b
C. 802.11g
D. 802.11n

A

802.11n

36
Q

A network engineer is installing hardware in a newly renovated data center. Major concerns that were addressed during the renovation included air circulation, building power redundancy, and the need for continuous monitoring. The network engineer is creating alerts based on the following operation specifications:

A. Environmental monitoring alerts for humidity greater than 95%
B. SIEM to parse syslog events for a failed power supply
C. SNMP traps to report when the chassis temperature exceeds 95°F (35°C)
D. UPS monitoring to report when input voltage drops below 220VAC

A

SIEM to parse syslog events for a failed power supply

37
Q

Which of the following fiber connector types is the most likely to be used on a network interface card?

A. LC
B. SC
C. ST
D. MPO

A

LC

38
Q

Which of the following is the most secure way to provide site-to-site connectivity?

A. VXLAN
B. IKE
C. GRE
D. IPSec

A

IPSec

39
Q

Which of the following are environmental factors that should be considered when installing equipment in a building? (Choose two.)

A. Fire suppression system
B. UPS location
C. Humidity control
D. Power load
E. Floor construction type
F. Proximity to nearest MDF

A

Fire suppression system
Humidity control

40
Q

A network administrator requires redundant routers on the network, but only one default gateway is configurable on a workstation. Which of the following will allow for redundant routers with a single IP address?

A. EIGRP
B. VRRP
C. MPLS
D. STP

A

VRRP

40
Q

A network technician crimped a length of UTP with TIA\EIA-568A on one end and TIA\EIA-568B on the other. Which of the following cable types did the technician create?

A. Crossover cable
B. Patch cable
C. Twinaxial cable
D. Rollover cable

A

Crossover cable

41
Q

A network administrator received reports that a 40Gb connection is saturated. The only server the administrator can use for data collection in that location has a 10GB connection to the network. Which of the following is the best method to use on the server to determine the source of the saturation?

A. Port mirroring
B. Log aggregation
C. Flow data
D. Packet capture

A

Flow data

42
Q

A network engineer designed and implemented a new office space with the following characteristics:

One month after the office space was implemented, users began reporting dropped signals when entering another room and overall poor connections to the 5GHz network. Which of the following should the engineer do to best resolve the issue?

A. Use non-overlapping channels.
B. Reconfigure the network to support 2.4GHz
C. Upgrade to WPA3.
D. Change to directional antennas.

A

Reconfigure the network to support 2.4GHz

43
Q

A network technician is troubleshooting internet connectivity issues with users in a subnet. From a host, the technician runs tcpdump and then attempts to navigate to a website using a web browser. The technician receives the following output:

Afterward, the browser displays an error. Which of the following explains this issue?

A. A routing loop is within the network.
B. The host is configured with incorrect DNS settings.
C. A broadcast storm is occurring on the subnet.
D. The host is missing a route to the website.

A

The host is configured with incorrect DNS settings.

44
Q

A user took a laptop on a trip and made changes to the network parameters while at the airport. The user can access all internet websites but not corporate intranet websites. Which of the following is the most likely cause of the issue?

A. Duplicate IP address
B. Duplicate SSID
C. Incorrect DNS
D. Incorrect subnet mask

A

Incorrect DNS

44
Q

After running a Cat 8 cable using passthrough plugs, an electrician notices that connected cables are experiencing a lot of cross talk. Which of the following troubleshooting steps should the electrician take first?

A. Inspect the connectors for any wires that are touching or exposed.
B. Restore default settings on the connected devices.
C. Terminate the connections again.
D. Check for radio frequency interference in the area.

A

Inspect the connectors for any wires that are touching or exposed.

45
Q

Which of the following would be best suited for use at the access layer in a three-tier architecture system?

A. Router
B. Multilayer switch
C. Layer 2 switch
D. Access point

A

Layer 2 switch

45
Q

Which of the following best describe the functions of Layer 2 of the OSI model? (Choose two.)

A. Local addressing
B. Error preventing
C. Logical addressing
D. Error detecting
E. Port addressing
F. Error correcting

A

A. Local addressing
D. Error detecting

46
Q

A network engineer performed a migration to a new mail server. The engineer changed the MX record, verified the change was accurate, and confirmed the new mail server was reachable via the IP address in the A record. However, users are not receiving email. Which of the following should the engineer have done to prevent the issue from occurring?

A. Change the email client configuration to match the MX record.
B. Reduce the TTL record prior to the MX record change.
C. Perform a DNS zone transfer prior to the MX record change.
D. Update the NS record to reflect the IP address change.

A

Reduce the TTL record prior to the MX record change.

47
Q

Following the implementation of a BYOD policy, some users in a high-density environment report slowness over the wireless connection. Some wireless controller reports indicate high latency and airttime contention. Which of the following is the most probable root cause?

A. The AP is configured with 2.4GHz frequency, which the new personal devices do not support.
B. The AP is configured with 2.4GHz frequency without band-steering capabilities.
C. The AP is configured with 5Ghz frequency with band-steering capabilities.
D. The AP is configured with 5Ghz frequency, which the new personal devices do not support

A

The AP is configured with 2.4GHz frequency without band-steering capabilities.

48
Q

Which of the following layers of the OSI model is responsible for end-to-end encryption?

A. Presentation
B. Application
C. Session
D. Transport

A

Transport

48
Q

Which of the following network topologies contains a direct connection between every node in the network?

A. Mesh
B. Hub-and-spoke
C. Star
D. Point-to-point

Selected Answer: A

A

Mesh

49
Q

A network engineer is upgrading an existing edge gateway. The company currently uses a router and needs to be able to filter on all OSI layers. Which of the following should the engineer use to upgrade the gateway?

A. NGFW
B. Proxy
C. Layer 3 switch
D. Load balancer

A

NGFW

49
Q

A client wants to increase overall security after a recent breach. Which of the following would be best to implement? (Choose two.)

A. Least privilege network access
B. Dynamic inventories
C. Central policy management
D. Zero-touch provisioning
E. Configuration drift prevention
F. Subnet range limits

A

A. Least privilege network access
C. Central policy management

50
Q

A network administrator wants to know which systems on the network are at risk of a known vulnerability. Which of the following should the administrator reference?

A. SLA
B. Patch management policy
C. NDA
D. Site survey report
E. CVE

A

CVE

50
Q

Which of the following architectures would allow the network-forwarding elements to adapt to new business requirements with the least amount of operating effort?

A. Software-defined network
B. Spine and leaf
C. Three-tier
D. Backbone

A

Software-defined network

51
Q

A company, which is located in a coastal town, retrofitted an office building for a new data center. The underground fiber optics were brought in and connected to the switches in the basement network MDF. A server data center was built on the fifth floor with the two rooms vertically connected by fiber optics. Which of the following types of environmental sensors is most needed?

A. Temperature sensor in the network MOF
B. Water sensor in the network MDF
C. Temperature sensor in the data center
D. Water sensor in the data center

A

. Water sensor in the network MDF

52
Q

A network security technician is designing a solution for a secure remote access scheme with the following requirements:

  • The solution must allow for users at multiple locations to access corporate resources.
  • The on-premises equipment will not handle non-corporate, resource-bound traffic.

Which of the following should the network security technician consider when designing the solution? (Choose two.)

A. Clientless VPN
B. Personal VPN
C. Full-tunnel VPN
D. Client-to-site VPN
E. Site-to-site VPN
F. Split-tunnel VPN

A

Client-to-site VPN
Split-tunnel VPN

52
Q

A customer lost the connection to the telephone system. The administration console is configured with multiple network interfaces and is connected to multiple switches. The network administrator troubleshoots and verifies the following:

  • The support team is able to connect remotely to the administration console.
  • Rebooting the switch shows solid link and activity lights even on unused ports.
  • Rebooting the telephone system does not bring the system back online.
  • The console is able to connect directly to individual modules successfully.

Which of the following is the most likely reason the customer lost the connection?

A. A switch failed.
B. The console software needs to be reinstalled.
C. The cables to the modules need to be replaced.
D. A module failed.

A

A switch failed.

53
Q

Which of the following is the next step to take after successfully testing a root cause theory?

A. Determine resolution steps.
B. Duplicate the problem in a lab.
C. Present the theory for approval.
D. Implement the solution to the problem.

A

A. Determine resolution steps.

53
Q

Which of the following does OSPF use to communicate routing updates?

A. Unicast
B. Anycast
C. Multicast
D. Broadcast

A

Multicast

54
Q

A network administrator wants to install new VoIP switches in small network closet but is concerned about the current heat level of the room. Which of the following should the administrator take into consideration before installing the new equipment?

A. The power load of the switches
B. The humidity in the room
C. The fire suppression system
D. The direction of airflow within the switches

A

The direction of airflow within the switches

55
Q

A user notifies a network administrator about losing access to a remote file server. The network administrator is able to ping the server and verifies the current firewall rules do not block access to the network fileshare. Which of the following tools would help identify which ports are open on the remote file server?

A. dig
B. nmap
C. tracert
D. nslookup

A

nmap

56
Q

An organization has a factory automation solution that requires accurate timing between devices. Which of the following should the network administrator implement?

A. PTP
B. NTP
C. NTS
D. DoT

A

NTP

57
Q

Users are moving back into an office that had been vacant for a while. Ten workstations are hooked up in the office, but one workstation cannot obtain a link with the switch. A network engineer checks the documentation and cable labeling, and everything is hooked up as expected. The engineer moves the connection to a different switchport. but a link still cannot be obtained. When the engineer puts a tone generator on the infrastructure cable, no tone is heard at the far end. Which of the following issues is the engineer MOST likely trying to find?

A. A bad switchport
B. A break in the cable
C. A cable short
D. Cable interference

A

A break in the cable

58
Q

A network administrator needs to set up a file server to allow user access. The organization uses DHCP to assign IP addresses. Which of the following is the best solution for the administrator to set up?

A. A separate scope for the file server using a /32 subnet
B. A reservation for the server based on the MAC address
C. A static IP address within the DHCP IP range
D. A SLAAC for the server

A

A reservation for the server based on the MAC address

59
Q

A network administrator is working to configure a new device to provide Layer 2 connectivity to various endpoints including several WAPs. Which of the following devices will the administrator MOST likely configure?

A. WLAN controller
B. Cable modem
C. Load balancer
D. Switch
E. Hub

A

Switch

60
Q

A network deployment engineer is deploying a new single-channel 10G optical connection. Which of the following optics should the engineer MOST likely use to satisfy this requirement?

A. QSFP
B. QSFP+
C. SFP
D. SFP+

A

SFP+

61
Q

Which of the following technologies would MOST likely be used to prevent the loss of connection between a virtual server and network storage devices?

A. Multipathing
B. VRRP
C. Port aggregation
D. NIC teaming

A

Multipathing

61
Q

Which of the following services provides the network information for the address when IPv6 is used for SLAAC addressing?

A. EUI-64
B. IPv6 unicast routing
C. Router advertisement
D. DHCPv6

A

Router advertisement

62
Q

A technician is troubleshooting a computer issue for a user who works in a new annex of an office building. The user is reporting slow speeds and intermittent connectivity. The computer is connected via a Cat 6 cable to a distribution switch that is 492ft (150m) away. Which of the following should the technician implement to correct the issue?

A. Increase the bandwidth allocation to the computer.
B. Install an access switch in the annex and run fiber to the distribution switch.
C. Run a Cat 7 cable from the computer to the distribution switch.
D. Enable the computer to support jumbo frames.

A

Install an access switch in the annex and run fiber to the distribution switch.

63
Q

A technician is troubleshooting intermittent connectivity between devices and viewing the following syslog entries from a switch:

21 Feb 2022 16:02:0231 NOTIFICATION %LINK-I-DOWN: G1/10
21 Feb 2022 16:02:0262 NOTIFICATION %LINK-I-UP: G1/10
21 Feb 2022 16:03:5321 NOTIFICATION %LINK-I-DOWN: G1/10
21 Feb 2022 16:03:7873 NOTIFICATION %LINK-I-UP: G1/10

Which of the following are these entries indicative of?

A. DDoS attack
B. Jitter
C. Latency
D. Link flapping

A

Link flapping

64
Q

A network administrator is checking to see if anything has changed. Which of the following steps of the troubleshooting methodology is involved?

A. Identify the problem.
B. Test the theory.
C. Establish a theory.
D. Document findings.

A

Identify the problem.

65
Q

A network manager wants to set up a remote access system for the engineering staff. Access to this system will be over a public IP and secured with an ACL. Which of the following best describes this system?

A. VPN
B. Secure Shell
C. Jump server
D. API

A

VPN

65
Q

An older web server on a screened subnet is serving unencrypted web traffic. The server is not capable of serving HTTPS traffic directly, but the firewall is capable of doing so. Which of the following should be done to encrypt all traffic coming into the web server from outside the network? (Choose two.)

A. A certificate should be installed on the server.
B. Incoming port 80 traffic at the firewall should be forwarded to port 443 on the server.
C. Incoming port 80 traffic at the firewall should be forwarded to port 80 on the server.
D. Incoming port 443 traffic at the firewall should be forwarded to port 80 on the server.
E. A certificate should be installed on the firewall.
F. A proxy server should be installed on the screened subnet.

A

Incoming port 443 traffic at the firewall should be forwarded to port 80 on the server.

A certificate should be installed on the firewall.

66
Q

A user is unable to reach any resources on the internet. A technician goes to the site and obtains the following output from the workstation:

Which of the following commands should the technician use to correct the issue?

A. route ADD 0.0.0.0 MASK 0.0.0.0 10.10.51.10 metric 35
B. route CHANGE 10.10.51.0 MASK 255.255.255.255 10.10.52.1 metric 5
C. route CHANGE 10.10.51.255 MASK 255.0.0.0 On-Link metric 1
D. route DELETE 127.255.255.255

A

route ADD 0.0.0.0 MASK 0.0.0.0 10.10.51.10 metric 35

This command will add a default route (0.0.0.0 with a subnet mask of 0.0.0.0) to the routing table, with the specified gateway IP address that traffic should be routed through when the destination is not within the local subnet. The metric value is used to give it a relative cost compared to other routes; a lower metric means a higher priority if multiple routes exist.

66
Q

Which of the following IP transmission types encrypts all of the transmitted data?

A. ESP
B. AH
C. GRE
D. UDP
E. TCP

A

ESP

66
Q

Which of the following is used when a workstation sends a DHCP broadcast to a server on another LAN?

A. Reservation
B. Dynamic assignment
C. Helper address
D. DHCP offer

A

Helper address

66
Q

Which of the following is used to estimate the average life span of a device?

A. RTO
B. RPO
C. MTBF
D. MTTR

A

. MTBF

67
Q

An IT administrator is creating an alias to the primary customer’s domain. Which of the following DNS record types does this represent?

A. CNAME
B. MX
C. A
D. PTR

Selected Answer: A

A

CNAME

68
Q

Which of the following is a characteristic of the application layer?

A. It relies upon other layers for packet delivery.
B. It checks independently for packet loss.
C. It encrypts data in transit.
D. It performs address translation.

A

It relies upon other layers for packet delivery.

69
Q

Which of the following is the best VPN to use for only encrypting and routing data for a specific destination?

A. Split-tunnel
B. Site-to-site
C. Client
D. Layer 2

A

Split-tunnel

70
Q

An administrator is adjusting the routing policy to ensure the headquarters location can connect to a new out-of-state branch office via BGP. Which of the following types of networks is being described?

A. PAN
B. MAN
C. LAN
D. WAN

A

WAN

Network (7 decks)

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