CompTIA JK0-023 Exam : CompTIA Network+ certification

JK0-023
  • Exam Code: JK0-023
  • Exam Name: CompTIA Network+ certification
  • Updated: Aug 02, 2026
  • Q & A: 995 Questions and Answers

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CompTIA JK0-023 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Industry Standards, Practices and Network Theory16%- Fundamental network theory and standards
- Best practices in networking environments
Topic 2: Network Architecture22%- OSI model and network standards
- Network topology and architecture basics
Topic 3: Network Security18%- Securing wired and wireless networks
- Security concepts and threat mitigation
Topic 4: Troubleshooting24%- Using tools to diagnose connectivity issues
- Network troubleshooting methodology
Topic 5: Network Operations20%- Network documentation and monitoring
- Change, configuration and lifecycle management

CompTIA Network+ certification Sample Questions:

1. Karen, a network technician, is troubleshooting in a wiring closet in 2011. The cabling to all the equipment does not match the documentation from 2007. Which of the following configuration management methods has been overlooked?

A) Baselining
B) System logs
C) Asset management
D) Change management


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

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


3. Which of the following would MOST likely be used by a network administrator to test DNS resolution?

A) nbtstat
B) netstat
C) ipconfig
D) dig


4. A network technician is using a network monitoring system and notices that every device on a particular segment has lost connectivity. Which of the following should the network technician do NEXT?

A) Document actions and findings.
B) Determine next steps to solve the problem.
C) Establish a theory of probable cause.
D) Determine if anything has changed.


5. Ann, a network technician, was asked to remove a virus. Issues were found several levels deep within the directory structure. To ensure the virus has not infected the .mp4 files in the directory, she views one of the files and believes it contains illegal material. Which of the following forensics actions should Ann perform?

A) Erase the files created by the virus
B) Check the remaining directories for more .mp4 files
C) Stop and escalate to the proper authorities
D) Copy the information to a network drive to preserve the evidence


Solutions:

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

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