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Exam Code: JK0-023
Exam Name: CompTIA Network+ certification
Certification Provider: CompTIA
Corresponding Certification: Network+

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JK0-023

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Updated: Sep 11, 2026

No. of Questions: 995 Questions & Answers with Testing Engine

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CompTIA JK0-023 Exam Overview:

Certification Vendor:CompTIA
Exam Name:CompTIA Network+ (JK0-023) Certification Exam
Exam Number:JK0-023
Available Languages:English
Related Certifications:CompTIA A+
CompTIA Security+
Exam Format:Multiple Choice, Performance-based questions (varies by version)
Recommended Training:CompTIA Network+ Training
Exam Registration:CompTIA Official Certification Page
Sample Questions:CompTIA JK0-023 Sample Questions
Exam Way:Computer-based exam delivered via testing centers or online proctored exam (depending on provider availability).
Pre Condition:No mandatory prerequisites; CompTIA recommends basic networking knowledge or CompTIA A+ certification.
Official Syllabus URL:https://www.comptia.org/certifications/network

CompTIA JK0-023 Exam Syllabus Topics:

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

                              CompTIA Network+ certification Sample Questions:

                              Question #1

                              Which of the following is an example of an IPv4 address?

                              • A. 00:AB:FA:B1:07:34
                              • B. 192:168:1:55
                              • C. ::1
                              • D. 192.168.1.254
                              Reveal Solution  Discussion  0

                              Correct Answer: D  🗳️

                              Question #2

                              Which of the following standards can operate at either 20MHz or 40MHz channel spacing?

                              • A. 802.11n
                              • B. 802.11a
                              • C. 802.11b
                              • D. 802.11g
                              Reveal Solution  Discussion  0

                              Correct Answer: A  🗳️

                              Question #3

                              Which of the following is the prefix for a link-local IPv6 address?

                              • A. FE80::/10
                              • B. FEEF:/12
                              • C. FF00::/8
                              • D. 2FFE::/16
                              Reveal Solution  Discussion  0

                              Correct Answer: A  🗳️

                              Question #4

                              Which of the following refers to a network that spans several buildings that are within walking distance of each other?

                              • A. MAN
                              • B. WAN
                              • C. PAN
                              • D. CAN
                              Reveal Solution  Discussion  0

                              Correct Answer: D  🗳️

                              Question #5

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

                              • A. SMTP
                              • B. TCP
                              • C. ARP
                              • D. ICMP
                              Reveal Solution  Discussion  0

                              Correct Answer: D  🗳️

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