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By comptia
Aug, 2025

Verified

25Q per page

Question 1

A systems administrator needs to improve WiFi performance in a densely populated office tower and use the latest standard. There is a mix of devices that use
2.4 GHz and 5 GHz. Which of the following should the systems administrator select to meet this requirement?

  • A: 802.11ac
  • B: 802.11ax
  • C: 802.11g
  • D: 802.11n

Question 2

An administrator is writing a script to periodically log the IPv6 and MAC addresses of all the devices on a network segment. Which of the following switch features will MOST likely be used to assist with this task?

  • A: Spanning Tree Protocol
  • B: Neighbor Discovery Protocol
  • C: Link Aggregation Control Protocol
  • D: Address Resolution Protocol

Question 3

Which of the following protocols will a security appliance that is correlating network events from multiple devices MOST likely rely on to receive event messages?

  • A: Syslog
  • B: Session Initiation Protocol
  • C: Secure File Transfer Protocol
  • D: Server Message Block

Question 4

Which of the following is MOST commonly used to address CVEs on network equipment and/or operating systems?

  • A: Vulnerability assessment
  • B: Factory reset
  • C: Firmware update
  • D: Screened subnet

Question 5

A network technician is investigating an issue with handheld devices in a warehouse. Devices have not been connecting to the nearest APs, but they have been connecting to an AP on the far side of the warehouse. Which of the following is the MOST likely cause of this issue?

  • A: The nearest APs are configured for 802.11g.
  • B: An incorrect channel assignment is on the nearest APs.
  • C: The power level is too high for the AP on the far side.
  • D: Interference exists around the AP on the far side.

Question 6

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

Question 7

Which of the following OSI model layers is where conversations between applications are established, coordinated, and terminated?

  • A: Session
  • B: Physical
  • C: Presentation
  • D: Data link

Question 8

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

Question 9

A network administrator decided to use SLAAC in an extensive IPv6 deployment to alleviate IP address management. The devices were properly connected into the LAN but autoconfiguration of the IP address did not occur as expected. Which of the following should the network administrator verify?

  • A: The network gateway is configured to send router advertisements.
  • B: A DHCP server is present on the same broadcast domain as the clients.
  • C: The devices support dual stack on the network layer.
  • D: The local gateway supports anycast routing.

Question 10

Which of the following is used to provide networking capability for VMs at Layer 2 of the OSI model?

  • A: VPN
  • B: VRRP
  • C: vSwitch
  • D: VIP

Question 11

A network administrator is required to ensure that auditors have read-only access to the system logs, while systems administrators have read and write access to the system logs, and operators have no access to the system logs. The network administrator has configured security groups for each of these functional categories. Which of the following security capabilities will allow the network administrator to maintain these permissions with the LEAST administrative effort?

  • A: Mandatory access control
  • B: User-based permissions
  • C: Role-based access
  • D: Least privilege

Question 12

Which of the following would be used to expedite MX record updates to authoritative NSs?

  • A: UDP forwarding
  • B: DNS caching
  • C: Recursive lookup
  • D: Time to live

Question 13

Which of the following DNS records works as an alias to another record?

  • A: AAAA
  • B: CNAME
  • C: MX
  • D: SOA

Question 14

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

Question 15

A company is being acquired by a large corporation. As part of the acquisition process, the company's address should now redirect clients to the corporate organization page. Which of the following DNS records needs to be created?

  • A: SOA
  • B: NS
  • C: CNAME
  • D: TXT

Question 16

A user is having difficulty with video conferencing and is looking for assistance. Which of the following would BEST improve performance?

  • A: Packet shaping
  • B: Quality of service
  • C: Port mirroring
  • D: Load balancing

Question 17

A network technician is configuring a new firewall for a company with the necessary access requirements to be allowed through the firewall. Which of the following would normally be applied as the LAST rule in the firewall?

  • A: Secure SNMP
  • B: Port security
  • C: Implicit deny
  • D: DHCP snooping

Question 18

A technician wants to install a WAP in the center of a room that provides service in a radius surrounding a radio. Which of the following antenna types should the
AP utilize?

  • A: Omni
  • B: Directional
  • C: Yagi
  • D: Parabolic

Question 19

A systems administrator is running a VoIP network and is experiencing jitter and high latency. Which of the following would BEST help the administrator determine the cause of these issues?

  • A: Enabling RADIUS on the network
  • B: Configuring SNMP traps on the network
  • C: Implementing LDAP on the network
  • D: Establishing NTP on the network

Question 20

The following instructions were published about the proper network configuration for a videoconferencing device:
"Configure a valid static RFC1918 address for your network. Check the option to use a connection over NAT."
Which of the following is a valid IP address configuration for the device?

  • A: FE80::1
  • B: 100.64.0.1
  • C: 169.254.1.2
  • D: 172.19.0.2
  • E: 224.0.0.12

Question 21

A network administrator is reviewing interface errors on a switch. Which of the following indicates that a switchport is receiving packets in excess of the configured
MTU?

  • A: CRC errors
  • B: Giants
  • C: Runts
  • D: Flooding

Question 22

A network administrator needs to implement an HDMI over IP solution. Which of the following will the network administrator MOST likely use to ensure smooth video delivery?

  • A: Link aggregation control
  • B: Port tagging
  • C: Jumbo frames
  • D: Media access control

Question 23

A network administrator wants to reduce overhead and increase efficiency on a SAN. Which of the following can be configured to achieve these goals?

  • A: Port aggregation
  • B: Traffic shaping
  • C: Jumbo frames
  • D: Flow control

Question 24

A company built a new building at its headquarters location. The new building is connected to the company's LAN via fiber-optic cable. Multiple users in the new building are unable to access the company's intranet site via their web browser, but they are able to access internet sites. Which of the following describes how the network administrator can resolve this issue?

  • A: Correct the DNS server entries in the DHCP scope
  • B: Correct the external firewall gateway address
  • C: Correct the NTP server settings on the clients
  • D: Correct a TFTP Issue on the company's server

Question 25

A rogue AP was found plugged in and providing Internet access to employees in the break room. Which of the following would be BEST to use to stop this from happening without physically removing the WAP?

  • A: Password complexity
  • B: Port security
  • C: Wireless client isolation
  • D: Secure SNMP
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