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CompTIA Network+ certification : JK0-023

JK0-023

Exam Code: JK0-023

Exam Name: CompTIA Network+ certification

Updated: Sep 14, 2026

Q&A Number: 995 Q&As

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CompTIA JK0-023 Exam Syllabus Topics:

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

                              CompTIA Network+ certification Sample Questions:

                              Question #1
                              Which of the following concepts are MOST important for a company's long term health in the event of a disaster? (Select TWO).

                              A. Redundancy
                              B. Implementing acceptable use policy
                              C. Uninterruptable power supplies
                              D. Offsite backups
                              E. Vulnerability scanning


                              Question #2
                              Ann, a user, is experiencing an issue with her wireless device. While in the conference area, the wireless signal is steady and strong. However, at her desk the signal is consistently dropping, yet the device indicates a strong signal. Which of the following is the MOST likely cause of the issue?

                              A. Incorrect SSID
                              B. Signal-to-noise ratio
                              C. AP configuration
                              D. Bounce


                              Question #3
                              A technician is setting up a firewall on the network that would show a public IP address out to the Internet and assign private IP addresses to users inside the network. Which of the following processes should be set up?

                              A. ACL
                              B. Port security
                              C. NAT
                              D. MAC filtering


                              Question #4
                              Which of the following 802.3 classifications has a MAXIMUM segment distance of 984 feet (300 meters)?

                              A. 1000Base
                              B. 100BaseFX
                              C. 1000BaseSX
                              D. 1000BaseT


                              Question #5
                              Joe, a network technician, is implementing a wireless network and needs to support legacy devices. He has selected to use WPA mixed mode. WPA mixed mode is normally implemented with which of the following encryption factors? (Select TWO).

                              A. 3DES
                              B. SSH
                              C. AES
                              D. TLS
                              E. TKIP
                              F. SSL


                              Solutions:

                              Question #1
                              Correct Answer: A,D
                              Question #2
                              Correct Answer: D
                              Question #3
                              Correct Answer: C
                              Question #4
                              Correct Answer: C
                              Question #5
                              Correct Answer: C,E

                              JK0-023 Related Exams
                              JK0-012 - CompTIA Network+
                              JK0-019 - CompTIA E2C Network + Certification Exam
                              JK0-023J - CompTIA Network+ certification (JK0-023日本語版)
                              JK0-016 - CompTIA Network+(2009 Edition) Exam
                              N10-005 - Network + Certification Exam
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                              CompTIA CySA+
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