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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 71:

    Users report that an internal web server is not responding. Which of the following commands could be used on the server to confrm that the web service is running?

    A. nbtstat
    B. traceroute
    C. nslookup
    D. netstat

  • Question 72:

    Which of the following is the BEST network confguraton to use if the technician wants to send all outgoing trafc to the external router?

    A. ACLs
    B. Statc routng
    C. Trunking
    D. SNMP strings

  • Question 73:

    An administrator determines there are an excessive number of packets being sent to a web server repeatedly by a small number of external IP addresses. This is an example of which of the following atacks?

    A. DDoS
    B. Viruses
    C. Worms
    D. Man-in-the-middle

  • Question 74:

    Which of the following uses a ring topology?

    A. DSL
    B. Ethernet
    C. DOCSIS
    D. SONET

  • Question 75:

    The Transport Layer of the TCP/IP model corresponds to which of the following layers of the OSI model?

    A. 1
    B. 3
    C. 4
    D. 5

  • Question 76:

    A user reports that one of their critcal programs no longer functons afer a recent router upgrade in the ofce. A network technician is called in to troubleshoot the issue and documentaton shows that the sofware needs full open connectons over ports 558f 981f and 382 in order to functon. Which of the following tools could the technician BEST use to troubleshoot this issue?

    A. NET USE
    B. IPCONFIG
    C. TRACEROUTE
    D. TELNET

  • Question 77:

    Which of the following WAN technologies has the highest latency?

    A. POTS
    B. Cable
    C. Satellite
    D. DSL

  • Question 78:

    A technician fnds that the network card is no longer functoning. At which of the following OSI layers is the problem occurring?

    A. Layer 1
    B. Layer 3
    C. Layer 5
    D. Layer 7

  • Question 79:

    Which of the following protocols would be used to send email to an email server?

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

  • Question 80:

    Which of the following source ports is MOST likely to be used by a client when making an outbound TCP connecton to a windows server?

    A. 80
    B. 445
    C. 3000
    D. 3389

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