Ccna certification Practice Tests

B. TCP/123

C. UDP/69

D. UDP/123

 18.  Which command will help you diagnose if the router or switch is getting an answer back 

from an NTP server?

A. 

Router#show ntp

B. 

Router#show ip ntp

C. 

Router#debug ntp packets

D. 

Router#debug ntp messages

 19.  Which is a best practice for setting up NTP?

A.  Always configure the time source to a DNS address.

B.  Configure all devices to a public NTP server.

C.  Configure all devices to different NTP servers for redundancy.

D.  Configure all devices as master servers.

 20.  Which command will allow you to view the time drift observed by NTP?

A. 

Router#show ntp

B. 

Router#show ip ntp status

C. 

Router#show ntp status

D. 

Router#debug ntp drift

 21.  Which command sets the time zone of a router for Pacific Standard Time?

A. 

Router(config)#clock timezone pacific

B. 

Router(config)#clock timezone pst -8 0

C. 

Router(config)#timezone pacific

D. 

Router(config)#timezone pst -8

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Chapter 4 

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  IP Services (Domain 4)

 22.  You are configuring NTP on your switch. You want to configure the switch so if any 

interface fails, NTP will still be available. Which type of interface should you use? 

Choose the best answer.