4.2 Configure and Verify NTP Operating in a Client and Server Mode 200-301 Practice Questions (Page 1)

Questions 1–5

1. 1expert · hard

   A router is configured with NTP authentication. The key is defined as 'ntp authentication-key 7 md5 Key123'. The router is also configured with 'ntp authenticate' and 'ntp trusted-key 7'. The router is a client of a server that uses the same key. However, synchronization fails. What is the most likely cause?

   • AThe server is using a different key number.
   • BThe router's clock is too far off.
   • CThe router is configured as an NTP master.
   • DThe router's key is not encrypted.
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   You have configured a router as an NTP client. After a few minutes, you run 'show ntp status' and see '.INIT.' in the clock source field. What does this indicate?

   • AThe router is synchronized to a server with an invalid IP address.
   • BThe router has detected a conflict between two NTP servers.
   • CThe router has not yet synchronized to any NTP server.
   • DThe router is using its own internal clock as the time source.
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   An administrator is troubleshooting an NTP client that is not synchronizing. The 'show ntp associations' output shows the server is reachable but the association is not synchronized. Which command would help determine if the server's clock is considered valid?

   • Ashow ntp status
   • Bshow clock detail
   • Cdebug ntp packets
   • Dshow ntp associations detail
   Reveal Solution Discussion Select an answer first
5. 4expert · hard

   A router is configured with 'ntp server 192.168.1.1' and 'ntp server 192.168.1.2'. The router is currently synchronized to 192.168.1.1. After a network change, 192.168.1.1 becomes unreachable, but 192.168.1.2 is still reachable. The router's clock continues to drift. What is the most likely reason the router is not synchronizing to 192.168.1.2?

   • AThe router's NTP process has crashed
   • BThe NTP algorithm requires time to select a new source, and the router may be in a hold-off period
   • CThe router's clock is too far off from 192.168.1.2
   • DThe router is configured as an NTP master
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   In an NTP client-server relationship, what is the role of the NTP client?

   • AIt synchronizes its clock to the time received from an NTP server
   • BIt provides time to other devices in the network
   • CIt acts as the authoritative time source for the entire network
   • DIt only sends time updates to the NTP server
   Reveal Solution Discussion Select an answer first