Study with JK0-023 Actual Test Questions
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Updated: Sep 07, 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+ |
| Exam Number: | JK0-023 (Network+) |
| Related Certifications: | CompTIA Security+ CompTIA A+ |
| Certificate Validity Period: | Certification valid for 3 years after passing |
| Available Languages: | English, Japanese, Spanish, Portuguese, German |
| Exam Price: | Approximately USD $350-399 (voucher price varies by region / provider) |
| Exam Duration: | 90 minutes |
| Exam Format: | Performance-based, Multiple choice |
| Real Exam Qty: | Up to 90 |
| Passing Score: | 720 (on a scale of 100–900) |
| Sample Questions: | CompTIA JK0-023 Sample Questions |
| Exam Way: | Administered by Pearson VUE; available onsite at test centers or online proctored |
| Pre Condition: | Recommended: CompTIA A+ certification and 9–12 months of networking experience |
| Official Syllabus URL: | https://www.comptia.org/en-us/certifications/network |
CompTIA JK0-023 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Network Operations | 20% | - Network documentation and monitoring - Change, configuration and lifecycle management |
| Industry Standards, Practices and Network Theory | 16% | - Fundamental network theory and standards - Best practices in networking environments |
| Troubleshooting | 24% | - Using tools to diagnose connectivity issues - Network troubleshooting methodology |
| Network Architecture | 22% | - OSI model and network standards - Network topology and architecture basics |
| Network Security | 18% | - Securing wired and wireless networks - Security concepts and threat mitigation |
CompTIA Network+ certification Sample Questions:
A company would like their technicians to be able to connect to employee desktops remotely via RDP. Which of the following default port numbers need to be opened on the firewall to support this?
- A. 3389
- B. 443
- C. 143
- D. 8080
Lisa, an administrator, attempts to open a web page and sees the following error: 'Error
404:
Page not found'. She then uses the ping command and finds that the default gateway cannot be pinged. At which of the following layers does the problem MOST likely reside?
- A. Layer 1
- B. Layer 7
- C. Layer 5
- D. Layer 4
Sandy, an administrator, determines there are an excessive number of packets being sent to a web server repeatedly by a small number of external IP addresses. This is an example of which of the following attacks?
- A. Viruses
- B. Worms
- C. Man-in-the-middle
- D. DDoS
Users are reporting that all of a sudden some of the files stored on the remote file server share are becoming corrupted and cannot be opened. A technician is dispatched to the server room to troubleshoot. The technician verifies that no changes to the network infrastructure occurred recently. Which of the following tools is MOST likely to reveal why files are becoming corrupted?
- A. OTDR
- B. Environmental monitor
- C. Cable tester
- D. Punch down tool
A CAT5e network cable run needs to be installed over fluorescent lighting arrays in an office building. Which of the following cable types would be BEST suited for such an installation?
- A. Plenum
- B. UTP
- C. STP
- D. Coaxial
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