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 311:

    A network technician is concerned that an atacker is atemptng to penetrate the networkf and wants to set a rule on the frewall to prevent the atacker from learning which IP addresses are valid on the network. Which of the following protocols needs to be denied?

    A. TCP
    B. SMTP
    C. ICMP
    D. ARP

  • Question 312:

    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 313:

    Which of the following tools would a technician use to determine if a CAT6 cable is properly terminated?

    A. Cable tester
    B. Punch down tool
    C. Crimper
    D. Multmeter

  • Question 314:

    Which of the following services do TCP connectons provide to applicaton layer protocols? (Select TWO).

    A. Transport services without error recovery
    B. Large data siie manageability using segmentaton
    C. Secure Kerberos password encrypton on data
    D. Delivery through error recovery
    E. Proxy server authentcaton

  • Question 315:

    Lisaf a network technicianf would like to keep the IP address of the Human Resource departmentns server in the same group of 100 DHCP IP addresses that are assigned to the Human Resource department's employee workstatons. Which of the following would BEST allow this and have the ability for the server to keep the same IP address?

    A. Implement a set of statc IPs for the entre human resource department.
    B. Use a DHCP reservaton for the server IP address.
    C. Use a small DHCP scope for the human resource department.
    D. Connect the server to a router in the network closet on the same foor.

  • Question 316:

    Kimf a technicianf needs to test if domain name resoluton is functoning properly. Which of the following sofware tools would she use to accomplish this? (Select TWO).

    A. arp
    B. dig
    C. route
    D. nslookup
    E. netstat

  • Question 317:

    Which of the following wiring components is used as a central point of terminaton for all network jacks through a building area?

    A. Demarc
    B. CSU
    C. Patch Panel
    D. Smart Jack

  • Question 318:

    Karenf a network technicianf is troubleshootng in a wiring closet in 2011. The cabling to all the equipment does not match the documentaton from 2007. Which of the following confguraton management methods has been overlooked?

    A. Change management
    B. System logs
    C. Asset management
    D. Baselining

  • Question 319:

    Which of the following methods for network performance optmiiaton is used to distribute trafc among similar devices?

    A. Fault tolerance
    B. QoS
    C. Proxy server
    D. Load balancing

  • Question 320:

    Which of the following defnes the pinout of an 8P8C eight pin modular jack for a CAT6a cable?

    A. 568B
    B. RJ-11
    C. RJ-45
    D. RS-232

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