A voice engineer is troubleshooting a phone issue. When a call is placed, the caller hears echoes of the receiver's voice. Which of the following are the causes of this issue? (Choose two.)

A. Jitter

B. Speed mismatch

C. QoS misconfiguration

D. Protocol mismatch

E. CRC errors

F. Encapsulation errors

Which of the following is most likely to have the HIGHEST latency while being the most accessible?

A. Satellite

B. DSL

C. Cable

D. 4G

During a risk assessment, which of the following should be considered when planning to mitigate high CPU utilization of a firewall?

A. Recovery time objective

B. Uninterruptible power supply

C. NIC teaming

D. Load balancing

Which of the following provides guidance to an employee about restricting non-business access to the company's videoconferencing solution?

A. Acceptable use policy

B. Data loss prevention

C. Remote access policy

D. Standard operating procedure

A technician is investigating packet loss to a device that has varying data bursts throughout the day. Which of the following will the technician MOST likely configure to resolve the issue?

A. Flow control

B. Jumbo frames

C. Duplex

D. Port mirroring

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 security administrator is trying to prevent incorrect IP addresses from being assigned to clients on the network. Which of the following would MOST likely prevent this and allow the network to continue to operate?

A. configuring DHCP snooping on the switch

B. Preventing broadcast messages leaving the client network

C. Blocking ports 67/68 on the client network

D. Enabling port security on access ports

A network technician was hired to harden the security of a network. The technician is required to enable encryption and create a password for AP security through the web browser. Which of the following would BEST support these requirements?

A. ESP

B. WPA2

C. IPSec

D. ACL

While walking from the parking lot to an access-controlled door, an employee sees an authorized user open the door. Then the employee notices that another person catches the door before it closes and goes inside. Which of the following attacks is taking place?

A. Tailgating

B. Piggybacking

C. Shoulder sur ng

D. Phishing

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 network administrator installed a new data and VoIP network. Users are now experiencing poor call quality when making calls. Which of the following should the administrator do to increase VoIP performance?

A. configure a voice VLAN.

B. configure LACP on all VoIP phones.

C. configure PoE on the network.

D. configure jumbo frames on the network.

A network technician receives a support ticket about an employee who has misplaced a company-owned cell phone that contains private company information.
Which of the following actions should the network technician take to prevent data loss?

A. Disable the user account.

B. Lock the phone.

C. Turn off the service.

D. Execute remote wipe.

A newly installed VoIP phone is not getting the DHCP IP address it needs to connect to the phone system. Which of the following tasks need to be completed to allow the phone to operate correctly?

A. Assign the phone’s switchport to the correct VLAN

B. Statically assign the phone’s gateway address

C. configure a route on the VoIP network router

D. Implement a VoIP gateway

Which of the following types of attacks can be used to gain credentials by setting up rogue APs with identical corporate SSIDs?

A. VLAN hopping

B. Evil twin

C. DNS poisoning

D. Social engineering

All packets arriving at an interface need to be fully analyzed. Which of the following features should be used to enable monitoring of the packets?

A. LACP

B. Flow control

C. Port mirroring

D. NetFlow exporter

A WAN technician reviews activity and identifies newly installed hardware that is causing outages over an eight-hour period. Which of the following should be considered FIRST?

A. Network performance baselines

B. VLAN assignments

C. Routing table

D. Device configuration review

An administrator would like to create a fault-tolerant ring between three switches within a Layer 2 network. Which of the following Ethernet features should the administrator employ?

A. Spanning Tree Protocol

B. Open Shortest Path First

C. Port mirroring

D. An interior gateway protocol

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 network administrator has received calls every day for the past few weeks from three users who cannot access the network. The administrator asks all the users to reboot their PCs, but the same users still cannot access the system. The following day, three different users report the same issue, and the administrator asks them all to reboot their PCs; however, this does not x the issue. Which of the following is MOST likely occurring?

A. Incorrect firewall settings

B. Inappropriate VLAN assignment

C. Hardware failure

D. Overloaded CAM table in switch

E. DHCP scope exhaustion

A fiber patch cable, which was being stored in an unsecure telecommunications closet with janitorial supplies, was damaged and caused an outage. A network technician replaced the broken cable with a new cable from a sealed bag. However, this solution did not resolve the outage.
Which of the following is the MOST likely explanation?

A. Incorrect pinout

B. Incorrect transceivers

C. Reversed transmit and receive

D. Dirty optical cables

A systems operator is granted access to a monitoring application, configuration application, and timekeeping application. The operator is denied access to the financial and project management applications by the system's security configuration. Which of the following BEST describes the security principle in use?

A. Network access control

B. Least privilege

C. Multifactor authentication

D. Separation of duties

An engineer is gathering data to determine the effectiveness of UPSs in use at remote retail locations. Which of the following statistics can the engineer use to determine the availability of the remote network equipment?

A. Uptime

B. NetFlow baseline

C. Review TTL stats

D. Interface statistics

Which of the following passwords would provide the best defense against a brute-force attack?

A. ThisIsMyPasswordForWork

B. Qwerty!@#$

C. Password!1

D. T5!8j5

A network technician is troubleshooting a network issue for employees who have reported issues with speed when accessing a server in another subnet. The server is in another building that is 410ft (125m) away from the employees' building. The 10GBASE-T connection between the two buildings uses Cat 5e. Which of the following BEST explains the speed issue?

A. The connection type is not rated for that distance.

B. A broadcast storm is occurring on the subnet.

C. The cable run has interference on it.

D. The connection should be made using a Cat 6 cable.

A network technician is troubleshooting a connection to a web server. The technician is unable to ping the server but is able to verify connectivity to the web service using Telnet. Which of the following protocols is being blocked by the firewall?

A. UDP

B. ARP

C. ICMP

D. TCP

An organization is interested in purchasing a backup solution that supports the organization's goals. Which of the following concepts would specify the maximum duration that a given service can be down before impacting operations?

A. MTTR

B. RTO

C. MTBF

D. RPO

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 client moving into a new office wants the IP network set up to accommodate 412 network-connected devices that are all on the same subnet. The subnet needs to be as small as possible. Which of the following subnet masks should be used to achieve the required result?

A. 255.255.0.0

B. 255.255.252.0

C. 255.255.254.0

D. 255.255.255.0

According to troubleshooting methodology, which of the following should the technician do NEXT after determining the most likely probable cause of an issue?

A. Establish a plan of action to resolve the issue and identify potential effects

B. Verify full system functionality and, if applicable, implement preventive measures

C. Implement the solution or escalate as necessary

D. Test the theory to determine the cause

A help desk engineer needs to configure two servers to have the same public IP addresses. Which of the following technologies should the engineer use?

A. NAT

B. VIP

C. DNS caching

D. RFC 1918

E. SDWAN

Which of the following uses the destination IP address to forward packets?

A. A bridge

B. A Layer 2 switch

C. A router

D. A repeater

A network technician needs to determine the IPv6 address of a malicious website. Which of the following record types would provide this information?

A. A

B. AAAA

C. CNAME

D. PTR

A network administrator notices excessive wireless traffic occurring on an access point after normal business hours. The access point is located on an exterior wall. Which of the following should the administrator do to limit wireless access outside the building?

A. Set up a private VLAN.

B. Disable roaming on the WAP.

C. Change to a directional antenna.

D. Stop broadcasting of the SSI

E.

A company wants to mitigate unauthorized physical connectivity after implementing a hybrid work schedule. Which of the following will the company MOST likely configure?

A. Intrusion prevention system

B. DHCP snooping

C. ARP inspection

D. Port security

A network administrator is decommissioning a server. Which of the following will the network administrator MOST likely consult?

A. Onboarding and offboarding policies

B. Business continuity plan

C. Password requirements

D. Change management documentation

Which of the following BEST describes a North-South traffic flow?

A. A public Internet user accessing a published web server

B. A database server communicating with another clustered database server

C. A Layer 3 switch advertising routes to a router

D. A management application connecting to managed devices

A technician is installing a new fiber connection to a network device in a datacenter. The connection from the device to the switch also traverses a patch panel connection. The chain of connections is in the following order:
Device
LC/LC patch cable
Patch panel
Cross-connect fiber cable
Patch panel
LC/LC patch cable
Switch
The connection is not working. The technician has changed both patch cables with known working patch cables. The device had been tested and was working properly before being installed. Which of the following is the MOST likely cause of the issue?

A. TX/RX is reversed

B. An incorrect cable was used

C. The device failed during installation

D. Attenuation is occurring

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 business is using the local cable company to provide Internet access. Which of the following types of cabling will the cable company MOST likely use from the demarcation point back to the central office?

A. Multimode

B. Cat 5e

C. RG-6

D. Cat 6

E. 100BASE-T

Which of the following topologies requires the MOST connections when designing a network?

A. Mesh

B. Star

C. Bus

D. Ring

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 network administrator is configuring Neighbor Discovery Protocol in an IPv6 network to ensure an attacker cannot spoof link-layer addresses of network devices. Which of the following should the administrator implement?

A. MAC filtering

B. Router Advertisement Guard

C. Port security

D. DNSSEC

Network connectivity in an extensive forest reserve was achieved using fiber optics. A network fault was detected, and now the repair team needs to check the integrity of the fiber cable. Which of the following actions can reduce repair time?

A. Using a tone generator and wire map to determine the fault location

B. Using a multimeter to locate the fault point

C. Using an OTDR in one end of the optic cable to get the fiber length information

D. Using a spectrum analyzer and comparing the current wavelength with a working baseline

Which of the following would be BEST suited for a long cable run with a 40Gbps bandwidth?

A. Cat 5e

B. Cat 6a

C. Cat 7

D. Cat 8

Which of the following protocols can be used to change device configurations via encrypted and authenticated sessions? (Choose two.)

A. SNMPv3

B. SSH

C. Telnet

D. IPSec

E. ESP

F. Syslog

A company needs a redundant link to provide a channel to the management network in an incident response scenario. Which of the following remote access methods provides the BEST solution?

A. Out-of-band access

B. Split-tunnel connections

C. Virtual network computing

D. Remote desktop gateways

A company streams video to multiple devices across a campus. When this happens, several users report a degradation of network performance.
Which of the following would MOST likely address this issue?

A. Enable IGMP snooping on the switches.

B. Implement another DHCP server.

C. Reconfigure port tagging for the video traffic.

D. Change the SSID of the APs.

A network technician is installing a wireless network in an office building. After performing a site survey, the technician determines the area is very saturated on the 2.4GHz and the 5GHz bands. Which of the following wireless standards should the network technician implement?

A. 802.11ac

B. 802.11ax

C. 802.11g

D. 802.11n

An administrator is setting up a multicast server on a network, but the firewall seems to be dropping the traffic. After logging in to the device, the administrator sees the following entries:

Which of the following firewall rules is MOST likely causing the issue?

A. Rule 1

B. Rule 2

C. Rule 3

D. Rule 4

Logs show an unauthorized IP address entering a secure part of the network every night at 8:00 p.m. The network administrator is concerned that this IP address will cause an issue to a critical server and would like to deny the IP address at the edge of the network. Which of the following solutions would address these concerns?

A. Changing the VLAN of the web server

B. Changing the server’s IP address

C. Implementing an ACL

D. Installing a rule on the firewall connected to the web server