CompTIA Network+ certification : JK0-023

  • Exam Code: JK0-023
  • Exam Name: CompTIA Network+ certification
  • Updated: Aug 24, 2026
  • Q&As: 995 Questions and Answers

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CompTIA JK0-023 Exam Syllabus Topics:

SectionObjectives
Topic 1: Network Technologies- Cabling and connectors
  • 1. Ethernet standards and wiring schemes
    • 2. Copper and fiber media types
      - Network devices and infrastructure
      • 1. Wireless networking components
        • 2. Routers, switches, hubs, and bridges
          Topic 2: Network Security- Network attacks and mitigation
          • 1. Firewalls and access control
            • 2. Common network threats
              - Security principles
              • 1. Encryption and secure protocols
                • 2. Authentication and authorization concepts
                  Topic 3: Network Management- Network configuration and documentation
                  • 1. Subnetting fundamentals
                    • 2. IP addressing basics (IPv4/IPv6)
                      - Network monitoring and troubleshooting
                      • 1. Performance monitoring concepts
                        • 2. Common network troubleshooting tools
                          Topic 4: Network Media and Topologies- Wireless standards
                          • 1. 802.11 standards overview
                            - Topologies
                            • 1. Star, mesh, bus, and hybrid topologies

                              CompTIA Network+ certification Sample Questions:

                              1. A technician has been given a list of requirements for a LAN in an older building using CAT6 cabling. Which of the following environmental conditions should be considered when deciding whether or not to use plenum-rated cables?

                              A) Window placement
                              B) Floor composition
                              C) Ceiling airflow condition
                              D) Workstation models


                              2. A user calls the help desk and states that he was working on a spreadsheet and was unable to print it. However, his colleagues are able to print their documents to the same shared printer. Which of the following should be the FIRST question the helpdesk asks?

                              A) Are there any errors on the printer display?
                              B) Does the printer have toner?
                              C) Is the user able to access any network resources?
                              D) Is the printer powered up?


                              3. A content filter is MOST likely installed on which of the following servers?

                              A) TACACS+ server
                              B) Proxy server
                              C) DHCP server
                              D) DNS server


                              4. Which of the following DNS record types will be used for mail transfer if the MX record is not found?

                              A) PTR
                              B) CNAME
                              C) AAAA
                              D) A


                              5. Which of the following commands would be used to identify how many hops a data packet makes before reaching its final destination?

                              A) route
                              B) netstat
                              C) traceroute
                              D) ping 127.0.0.1


                              Solutions:

                              Question # 1
                              Answer: C
                              Question # 2
                              Answer: C
                              Question # 3
                              Answer: B
                              Question # 4
                              Answer: D
                              Question # 5
                              Answer: C

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