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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 941:

    An administrator notces SMTP trafc is being blocked by the company frewall. Which of the following ports should be opened?

    A. 25

    B. 53

    C. 110

    D. 443

  • Question 942:

    The protocols that use a three way handshake to transfer informaton can be found within which layer of the OSI model?

    A. Layer 2

    B. Layer 3

    C. Layer 4

    D. Layer 5

  • Question 943:

    If a NIC does not have a link lightf there is a failure at which of the following OSI layers?

    A. Physical

    B. Session

    C. Data link

    D. Presentaton

  • Question 944:

    Which of the following protocols is MOST commonly associated with VoIP?

    A. LDAP

    B. HTTPS

    C. SIP

    D. SCP

  • Question 945:

    The APIPA address 169.254.10.123 falls into which of the following class of addresses?

    A. A

    B. B

    C. C

    D. D

  • Question 946:

    Which of the following uses distance vector algorithms to determine the BEST network route to a destnaton address?

    A. IS-IS

    B. OSPF

    C. BGP

    D. RIP

  • Question 947:

    Which of the following uses classless subnet masks across a network?

    A. Subnetng

    B. CIDR

    C. Supernetng

    D. Summariiaton

  • Question 948:

    The network interface layer of the TCP/IP model corresponds with which of the following layers of the OSI model? (Select TWO).

    A. Transport layer

    B. Network layer

    C. Session layer

    D. Physical layer

    E. Presentaton layer

    F. Data link layer

  • Question 949:

    Which of the following networking devices can exist at several layers of the OSI model at the same tme? (Select TWO).

    A. Switch

    B. Cable

    C. Repeater

    D. Router

    E. Bridge

    F. Hub

  • Question 950:

    A network consultant arrives at a customerns site to troubleshoot their email server. The server is running a Linux operatng systemf but the consultant is only familiar with Windows operatng systems. Which of the following troubleshootng steps should the consultant take?

    A. Document fndings

    B. Identfy the problem

    C. Escalate the problem

    D. Establish a plan of acton

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