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CompTIA JK0-023 valid - in .pdf
- Exam Code: JK0-023
- Exam Name: CompTIA Network+ certification
- Q & A: 995 Questions and Answers
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- Exam Code: JK0-023
- Exam Name: CompTIA Network+ certification
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CompTIA JK0-023 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Network Operations | 20% | - Monitoring and documentation - Business continuity and disaster recovery - Remote access and management - Network policies and best practices |
| Topic 2: Network Architecture | 20% | - OSI and TCP/IP models - Routing and switching technologies - Network topologies and types - IP addressing and subnetting - Network services and cloud concepts |
| Topic 3: Industry Standards, Practices, and Network Theory | 20% | - Communication and professional conduct - Network evolution and emerging technologies - Standards and protocols - Safety and environmental procedures |
| Topic 4: Network Troubleshooting | 20% | - Troubleshooting methodology - IP addressing and routing problems - Wireless and security troubleshooting - Cable and connectivity issues |
| Topic 5: Network Security | 20% | - Security devices and technologies - Threats, vulnerabilities, and mitigation - Authentication and access control - Encryption and secure protocols |
CompTIA Network+ certification Sample Questions:
Question #1
A network administrator recently installed a web proxy server at a customer's site. The following week, a system administrator replaced the DNS server overnight. The next day, customers began having issues accessing public websites. Which of the following will resolve the issue?
- A. Put the proxy server on the other side of the demarc.
- B. Update the DNS server with the proxy server information.
- C. Reboot the web proxy and then reboot the DNS server.
- D. Implement a split horizon DNS server.
Answer: B
Question #2
A network administrator has created a virtual machine in the cloud. The technician would like to connect to the server remotely using RDP. Which of the following default ports needs to be opened?
- A. 3389
- B. 445
- C. 5004
- D. 5060
Answer: A
Question #3
Which of the following performs authentication and provides a secure connection by using 3DES to encrypt all information between two systems?
- A. HTTPS
- B. SSH
- C. RSA
- D. SSL
Answer: B
Question #4
Which of the following wireless standards is capable of ONLY operating on 5.8GHz?
- A. 802.11a
- B. 802.11b
- C. 802.11n
- D. 802.11g
Answer: A
Question #5
Which of the following can be used to prioritize network streams to optimize performance for certain traffic types?
- A. VLAN
- B. VPN
- C. PoE
- D. QoS
Answer: D
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