Exam Details

  • Exam Code
    :JK0-023
  • Exam Name
    :CompTIA Network+
  • Certification
    :CompTIA Certifications
  • Vendor
    :CompTIA
  • Total Questions
    :1112 Q&As
  • Last Updated
    :Jun 19, 2025

CompTIA CompTIA Certifications JK0-023 Questions & Answers

  • Question 811:

    Afer a recent generator testf several users are reportng network connectvity issues. Joef the network technicianf is unable to connect via SSH to the main switch. Which of the following is the MOST likely cause of the connectvity issue?

    A. Faulty cable

    B. Misconfgured speed and duplex

    C. Wrong gateway

    D. Power loss

  • Question 812:

    Joef a technicianf was requested to change the wireless channel a WAP was operatng on. Which of the following would be a valid reason for the change?

    A. Interference

    B. War driving

    C. SSID

    D. Frequency speeds

  • Question 813:

    Which of the following limits the number of devices that can be assigned IP addresses by DHCP?

    A. Lease

    B. Reservaton

    C. DNS setng

    D. Scope

  • Question 814:

    Karenf a network technicianf is installing an 802.11n network. Which of the following should Karen enable to ensure that the network only allows 802.11n clients?

    A. Name the SSID on the 802.11n network only

    B. Limit the DHCP address pool

    C. Disable 802.11b and 802.11g

    D. Only use WPA encrypton

  • Question 815:

    Joef a technicianf needs multple networksf high speedsf and redundancy on a system. Which of the following confguratons should Joe consider for these requirements? (Select TWO).

    A. Routng table

    B. Next hop

    C. Port mirroring

    D. Port monitoring

    E. VLANs

  • Question 816:

    Sandyf a network technicianf is troubleshootng a new wireless network that has been dropping connectons. She notces another wireless network in the are

    A. Which of the following BEST explains the reason for the dropped connectons?

    B. Latency

    C. SSID mismatch

    D. Interference

    E. Encrypton type

  • Question 817:

    Which of the following address blocks would MOST likely be blocked from crossing a border router?

    A. 8.0.0.0/8

    B. 172.16.0.0/12

    C. 122.0.0.0/24

    D. 248.0.0.0/8

  • Question 818:

    Sandyf a network administratorf wants to automatcally assign 168.254.1.0/24 addresses to computers on the network. Which of the following will need to be confgured?

    A. DHCP addressing

    B. Private addressing

    C. DNS addressing

    D. APIPA addressing

  • Question 819:

    Sandyf a technicianf installs a new WAP and users are able to connect; howeverf users cannot access the Internet. Which of the following is the MOST likely cause of the problem?

    A. The signal strength has been degraded and latency is increasing hop count.

    B. An incorrect subnet mask has been entered in the WAP confguraton.

    C. The signal strength has been degraded and packets are being lost.

    D. Users have specifed the wrong encrypton type and routes are being rejected.

  • Question 820:

    Kurtf a network administratorf needs to purchase a new switch to support VoIP phones and wireless access points in a new building. Which of the following features are the MOST important for the new switch to support?

    A. PoE and QoS

    B. LACP and OSPF

    C. 802.1x and 802.11n

    D. NAT and VTP

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