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CompTIA Network+

Exam Details

  • Exam Code
    :JK0-023
  • Exam Name
    :CompTIA Network+
  • Certification
    :CompTIA Certifications
  • Vendor
    :CompTIA
  • Total Questions
    :1112 Q&As
  • Last Updated
    :Jul 06, 2025

CompTIA CompTIA Certifications JK0-023 Questions & Answers

  • Question 721:

    Which of the following technologies can change channel widths?

    A. 802.11a

    B. 802.11b

    C. 802.11n

    D. Bluetooth

  • Question 722:

    The unit responsible for the successful shaping and transmission of a digital signal is called:

    A. demarc.

    B. T1 hub.

    C. smart jack.

    D. CSU/DSU.

  • Question 723:

    Which of the following is MOST likely used with RG-6 media?

    A. MTRJ

    B. RJ-11

    C. RJ-45

    D. F-connector

  • Question 724:

    A technician is trying to add another switch to the network with multple VLANs. Which of the following should the technician confgure on the interface to allow multple VLANs?

    A. Mirroring

    B. Trunking

    C. Authentcatng

    D. Bonding

  • Question 725:

    A technician notces a newly installed CAT5 cable is longer than the standard maximum length. Which of the following problems would this MOST likely cause?

    A. Split cable

    B. EMI

    C. DB loss

    D. Crosstalk

  • Question 726:

    A technician has been dispatched to investgate connectvity problems of a recently renovated ofce. The technician has found that the cubicles were wired so that the network cables were run inside the conduit with the electrical cabling. Which of the following would MOST likely resolve the connectvity issue?

    A. Power-cycle the computers and switches to re-establish the network connecton.

    B. Re-run the network cabling through the ceiling alongside the lights to prevent interference.

    C. Test the wiring in the network jacks for faults using a cable verifer.

    D. Re-run the network cabling so that they are 12 inches or more away from the electrical lines.

  • Question 727:

    Which of the following cable types is required to run through an air duct?

    A. UTP

    B. Fiber

    C. PVC

    D. Plenum

  • Question 728:

    Annf a technicianf is installing network cables for an ofce building. Some of the cables are not showing actve on the switch even when moved to diferent ports. Which of the following is MOST likely the cause?

    A. Port speed mismatch

    B. Faulty F-connectors

    C. Bad wiring

    D. Bad switch

  • Question 729:

    Which of the following defnes a rack located in an ofce building between the main rack and other ofce equipment?

    A. DSU

    B. MDF

    C. CSU

    D. IDF

  • Question 730:

    In contrast to earlier Wi-Fi speedsf which of the following BEST describes the antenna and channeliiaton propertes used in 802.11n?

    A. MIMOf DSSS

    B. MIMOf OFDM

    C. CSMAf DSSS

    D. CSMAf CDMA

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