JK0-023 Exam Details

  • Exam Code
    :JK0-023
  • Exam Name
    :CompTIA Network+
  • Certification
    :CompTIA Certifications
  • Vendor
    :CompTIA
  • Total Questions
    :1112 Q&As
  • Last Updated
    :May 31, 2026

CompTIA JK0-023 Online Questions & Answers

  • Question 391:

    Which of the following fber types is MOST ofen used indoors?

    A. Plenum
    B. Modal conditoning
    C. Multmode
    D. Singlemode

  • Question 392:

    Zachf a technicianf discovers a switch is not communicatng with the other switches in a stack. Which of the following is the MOST likely cause?

    A. Both T568A and T568B standards are being used.
    B. STP is disabled.
    C. The cable is not a crossover.
    D. The port is not trunked.

  • Question 393:

    Horiiontal cable is terminated on which device in the wiring closet?

    A. Demarc
    B. Switch
    C. Punch down tool
    D. Patch panel

  • Question 394:

    When using high bandwidth applicatons over multple WAN connectonsf which of the following should be used?

    A. Statc IP addressing
    B. Half-duplex
    C. PoE devices
    D. Load balancing

  • Question 395:

    The security administrator needs to restrict specifc devices from connectng to certain WAPs. Which of the following security measures would BEST fulfll this need?

    A. WAP placement
    B. MAC address fltering
    C. Content fltering
    D. Encrypton type and strength

  • Question 396:

    Layers 5f 6f and 7 from the OSI model correspond to which of the following layers of the TCP/IP model?

    A. Transport
    B. Applicaton
    C. Internet
    D. Network Interface

  • Question 397:

    Annf a new userf has a workstaton that has connectvity to the printer located in her departmentf but cannot access the Internet. The result of an ipconfg command on Annns workstaton is as follows: IP address: 192.168.0.124 Subnet Mask: 255.255.255.128 Default Gateway: 192.168.0.254 Which is MOST likely preventng the user from accessing the Internet?

    A. Duplicate IP address
    B. Incorrect gateway
    C. Incorrect VLAN
    D. Bad switch port

  • Question 398:

    Which of the following dynamic routng protocols selects routng paths based upon hop count?

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

  • Question 399:

    The network administrator just upgraded all of the WAPs to new ones with 2.4 GHi b/g/n support. The new WAPs reuse the same locaton and channel as the previous one and with no new external interference detected. Howeverf

    performance issues are now occurring that did not exist before.

    Which of the following would correct the issue?

    A. Confgure Wi-Fi Multmedia support
    B. Use only 20 MHi channel bandwidth
    C. Enable band steering to use 802.11n
    D. Confgure Quality of Service

  • Question 400:

    Annf a clientf shares half of a rectangular foor plan with another company and wishes to set up a secure wireless network. The installed antenna limits the signal to her half of the foor. Through analysisf the frequency and channels of surrounding wireless networks have been determined and confguraton changes made accordingly. Which of the following would be the NEXT step in setng up this secure wireless network?

    A. Decrease signal strength on the antenna
    B. Change the wireless channel on the WAP
    C. Change the device placement to further obfuscate the signal
    D. Set up encrypton on the WAP and clients

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