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2021 Jan JK0-019 exam
Q351. A technician wants to test the DNS server ns.company.com to ensure it is able to resolve the company web address. Which of the following command sequences will test DNS functionality?
A. nslookup set type=mx www.company.com
B. nslookup Set type=ns @ns.company.com www
C. nslookup domain ns.company.com lookup www
D. nslookup server ns.company.com www.company.com
Answer: D
Q352. A user is unable to access the company website on a laptop. A network technician verifies that the user can access other Internet pages. According to network troubleshooting methodology, which of the following steps should be taken NEXT?
A. Remotely connect to the user's laptop and review the network configuration settings
B. Ping the web server from inside the network to ensure it is still up and running.
C. Check to make sure the company's website is accessible from the Internet.
D. Ensure the Ethernet cable is securely plugged into the user's laptop
Answer: C
Q353. Which of the following protocols is commonly used for VoIP technology?
A. Telnet
B. SMTP
C. SIP
D. SNMP
Answer: C
Q354. When verifying a new wireless installation the administrator is unable to see a wireless signal with any wireless laptop. The MOST likely problem is:
A. The SSID is not set to broadcast
B. An incorrect channel is being used
C. Incorrect client security settings are configured
D. Incorrect client configuration on the laptops
Answer: A
Q355. An administrator is using a protocol analyzer to monitor traffic between two servers. However, the only traffic that appears is broadcast and traffic originating from the administrator's PC. Which of the following devices is the administrator plugged into?
A. Hub
B. Bridge
C. Switch
D. Router
Answer: C
Update JK0-019 test preparation:
Q356. Sandy, a network technician, has determined that the initial theory of probable cause was incorrect. Which of the following would be the NEXT step in the troubleshooting process?
A. Implement the solution
B. Establish a plan
C. Document findings
D. Escalate the issue
Answer: D
Q357. Which of the following features is essential in a firewall if it is to support RTP sessions?
A. Remote console
B. Statefulness
C. Address translation
D. Zones
Answer: B
Q358. Karen, a technician, needs to test if domain name resolution is functioning properly. Which of the following software tools would she use to accomplish this? (Select TWO).
A. arp
B. dig
C. route
D. nslookup
E. netstat
Answer: BD
Q359. Which of the following layers is associated with the physical hardware address of a network node?
A. Layer 1
B. Layer 2
C. Layer 6
D. Layer 7
Answer: B
Q360. When each routing device has a consistent view of the network topology, the network is said to be:
A. fault tolerant
B. converged
C. autonomous
D. vectored
Answer: B