Which of the following is accurate about the NTP client function on a Cisco router?

Which of the following is accurate about the NTP client function on a Cisco router?

• The client synchronizes its time-of-day clock based on the NTP server.
• It counts CPU cycles of the local router CPU to more accurately keep time.
• The client synchronizes its serial line clock rate based on the NTP server.
• The client must be connected to the same subnet as an NTP server.

Explanation: NTP uses protocol messages between clients and servers so that the clients can adjust their time-of-day clock to match the server. NTP is totally unrelated to serial line clocking. It also does not count CPU cycles, instead relying on messages from the NTP server. Also, the client defines the IP address of the server and does not have to be in the same subnet.