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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
    :Apr 12, 2025

CompTIA CompTIA Certifications JK0-023 Questions & Answers

  • Question 1011:

    Which of the following are valid hosts for the Private IP Address range 172.16.0.x /23? (Select TWO).

    A. 172.16.0.255

    B. 172.16.0.0

    C. 172.16.1.1

    D. 172.16.8.0

    E. 172.16.256.255

  • Question 1012:

    Which of the following exist at layer three of the OSI model? (Select TWO).

    A. NIC

    B. Switch

    C. Frame

    D. Packet

    E. Router

    F. Cable

  • Question 1013:

    In order for switching loops to be automatcally disabledf which of the following needs to be implemented?

    A. Routng tables

    B. Collision domains

    C. Port mirroring

    D. Spanning-tree protocol

  • Question 1014:

    Which of the following protocols would the network administrator use to protect login credentals when accessing a router terminal session?

    A. SCP

    B. SNMPv3

    C. SSL

    D. SSH

  • Question 1015:

    At which layer of the OSI and TCP/IP model would HTTP and FTP be found?

    A. Applicaton

    B. Network

    C. Session

    D. Data Link

  • Question 1016:

    A user reports they are unable to access a fle on a mapped network drive. A technician discovers the server where the fle is located did not come back online afer last nightns power outage and manually powers the server back online. The technician then verifes the user can connect to their fle. Which of the following troubleshootng steps should the technician do NEXT?

    A. Escalate by following change procedures

    B. Establish a plan of acton to resolve the problem

    C. Document fndingsf actonsf and outcomes

    D. Queston the user

  • Question 1017:

    Afer a new frewall is installedf users report that they do not have connectvity to the Internet. The output of the ipconfg command shows an IP address of 169.254.0.101. Which of the following ports would need to be opened on the frewall to allow the users to obtain an IP address? (Select TWO).

    A. UDP 53

    B. UDP 67

    C. UDP 68

    D. TCP 53

    E. TCP 67

    F. TCP 68

  • Question 1018:

    A user reports that they are unable to connect to the network. Upon further investgatonf a technician notces that the user has an IP address/subnet mask combinaton of 192.168.204.255/24. The default gateway for the network is

    192.168.204.254. Which of the following could the userns IP address be changed to so that they could connect to the network?

    A. 192.168.204.0/27

    B. 192.168.204.1/27

    C. 192.168.204.112/24

    D. 192.168.204.254/24

  • Question 1019:

    Which of the following ports would have to be allowed through a frewall for NTP to pass on its default port?

    A. 123

    B. 143

    C. 153

    D. 163

  • Question 1020:

    Which of the following would be used to run an instance of a Layer 2 device within an applicaton?

    A. Virtual switch

    B. Virtual router

    C. Virtual PBX

    D. NaaS

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