Exam Code: JK0-019 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: CompTIA Network+ Certification Exam (JK0-019)
Certification Provider: CompTIA
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2021 Nov JK0-019 exams

Q11. How many bits are in an IPv6 address? 

A. 32 

B. 64 

C. 128 

D. 256 

Answer: C 


Q12. A company wants to secure access to its internal wireless network. The company wants to use the most secure means to access the network. Which of the following is the BEST choice for wireless security in this situation? 

A. WEP encryption 

B. Channel rotation 

C. Disable SSID 

D. WPA encryption 

Answer: D 


Q13. Which of the following tools would an administrator use to determine if a DNS server is answering authoritatively for a domain? 

A. nbtstat 

B. dig 

C. netstat 

D. hostname 

Answer: B 


Q14. Which of the following is an invalid MAC address? 

A. AA:CE:58:FD:90:08 

B. 44:98:3E:F8:33:23 

C. 56:AD:BX89:55:54 

D. 94:9E:FE:EE:8C:DF 

Answer: C 


Q15. Which of the following has a maximum transfer rate of 54Mbps and operates at the 5GHz frequency? 

A. 802.11a 

B. 802.11b 

C. 802.11g 

D. 802.11n 

Answer: A 


Abreast of the times JK0-019 practice:

Q16. Determining when to retransmit frames is an example of which of the following Ethernet properties? 

A. Carrier sense 

B. Collision detection 

C. Multiple access points 

D. Collision avoidance 

Answer: B 


Q17. A section of the building has been having intermittent connectivity problems lately. An action plan and solution has been created. Which of the following steps would an administrator perform NEXT? 

A. Document the solution and process. 

B. Establish the most probable cause. 

C. Implement and test the solution. 

D. Identify additional symptoms and problems 

Answer: C 


Q18. Which of the following is the MOST economical way for Sandy, a technician, to implement 10- Gigabit Ethernet at a datacenter? 

A. 10GBaseLR 

B. 10GBaseSR 

C. 10GBaseX 

D. 10GBaseT 

Answer: D 


Q19. By default, which of the following ports would a network need to have opened to allow for the transmission of incoming and outgoing email? (Select TWO). 

A. 21 

B. 25 

C. 80 

D. 110 

E. 123 

Answer: BD


Q20. Karen, a network technician, needs to identify the MAC address of a device that is creating broadcast storms on the network. Which of the following tools will provide the needed information? 

A. History logs 

B. Network sniffer 

C. Network maps 

D. Traffic shaping 

Answer: B