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CompTIA JK0-023 Online Practice Questions and Exam Preparation

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 471:

    A VPN concentrator is used for which of the following purposes?

    A. MAC fltering
    B. Content fltering
    C. Secure network access
    D. Connectvity troubleshootng

  • Question 472:

    Which of the following BEST describes how a layer 2 switch functons?

    A. Switches packets within the same subnet based on MAC addresses
    B. Switches packets between diferent subnets based on IP addresses
    C. Switches packets between diferent subnets based on MAC addresses
    D. Switches packets within the same subnet based on IP addresses

  • Question 473:

    A user is unable to connect to a remote computer using RDP. The technician checks the frewall rules and notes that there is no rule that blocks RDP. Which of the following features of the frewall is responsible for blocking RDP?

    A. Stateful inspecton
    B. NAT/PAT
    C. Port security
    D. Implicit deny

  • Question 474:

    Which of the following WAN technologies has a MAXIMUM speed of 155.52Mbps?

    A. OC-3
    B. T3
    C. OC-12
    D. E1

  • Question 475:

    Which of the following cable types allows for the LONGEST distance of a Gigabit Ethernet connecton?

    A. Multmode fber
    B. CAT6a
    C. Single mode fber
    D. Coaxial

  • Question 476:

    A network administrator opens up the RDP port to access network resources from home. Several months laterf the administratorns account is getng locked out constantly. Afer closing the portf which of the following should be used to identfy the source of the atack?

    A. Network maps
    B. Change management
    C. Log analysis
    D. Protocol analyier

  • Question 477:

    Which of the following commands will provide an administrator with the number of hops a packet takes from host to host?

    A. nslookup
    B. ping
    C. traceroute
    D. route

  • Question 478:

    Which of the following network protocols is used to transport email across the Internet?

    A. NTP
    B. SSH
    C. SMTP
    D. SNMP

  • Question 479:

    A network technician confgures a frewall to block only certain IP addresses from accessing the Internet. All users are reportng that they are unable to access the Internet. Which of the following is the MOST likely reason?

    A. Incorrectly confgured ACL
    B. Implicit allow statement
    C. SMTP requests are being denied
    D. All protocols are being allowed in

  • Question 480:

    A patch cable terminated with one end as T568A and the other as T568B will create which of the following cable types?

    A. Crossover
    B. Serial
    C. Roll over
    D. Straight through

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