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Download CompTIA : JK0-023 Questions & Answers as PDF & Test Software

Last Updated: Aug 08, 2026

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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 Media and Topologies- Topologies
          • 1. Star, mesh, bus, and hybrid topologies
            - Wireless standards
            • 1. 802.11 standards overview
              Topic 3: Network Security- Security principles
              • 1. Encryption and secure protocols
                • 2. Authentication and authorization concepts
                  - Network attacks and mitigation
                  • 1. Common network threats
                    • 2. Firewalls and access control
                      Topic 4: Network Management- Network configuration and documentation
                      • 1. Subnetting fundamentals
                        • 2. IP addressing basics (IPv4/IPv6)
                          - Network monitoring and troubleshooting
                          • 1. Common network troubleshooting tools
                            • 2. Performance monitoring concepts

                              CompTIA Network+ certification Sample Questions:

                              1. Which of the following network monitoring resources would be used to analyze possible connectivity issues such as duplex mismatches and uptime statistics?

                              A) Protocol analyzer
                              B) Syslog server
                              C) Packet sniffer
                              D) IPS logs


                              2. A strong network firewall would likely support which of the following security features for controlling access? (Select TWO).

                              A) MAC filtering
                              B) Port filtering
                              C) War chalking
                              D) War driving
                              E) FTP bouncing


                              3. Which of the following TCP/IP model layers does the OSI model Presentation layer map to?

                              A) Application
                              B) Network Interface
                              C) Internet
                              D) Transport


                              4. A Chief Executive Officer (CEO) decided that only a limited number of authorized company workstations will be able to connect to the Internet. Which of the following would BEST accomplish this goal?

                              A) Enable MAC address filtering
                              B) Enable RAS on the network firewall
                              C) Install and configure IDS
                              D) Use content filtering


                              5. The network support team is constantly getting calls from users in a specific area of an office building. The users are able to connect to the office wireless network, but they sometimes disconnect or experience very slow download speeds. Which of the following is MOST likely the problem?

                              A) Low signal strength or interference
                              B) Incorrect IP address or subnet mask
                              C) Incorrect service set identifier
                              D) Incorrect encryption scheme


                              Solutions:

                              Question # 1
                              Answer: B
                              Question # 2
                              Answer: A,B
                              Question # 3
                              Answer: A
                              Question # 4
                              Answer: A
                              Question # 5
                              Answer: A

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