[&] Which of the following statements is true about NTP (Network Time Protocol)? (Select the best answer)
- It is carried by TCP port 123
- It is carried by TCP port 321
- It is carried by UDP port 321
- It is carried by UDP port 123

[&] What command would you implement on a Cisco IOS device to enable NTP Client functionality, pointing it to a server located at 1.2.3.4? (Select the best answer)
- Device(config)#ntp server 1.2.3.4
- Device(config)#ntp master 1.2.3.4
- Device(config)#ntp authority 1.2.3.4
- Device(config)#ntp source 1.2.3.4

[&] Which of the following represents the most accurate form of clock? (Select the best answer)
- Radio Clocks
- GPS Clocks
- Atomic Clocks
- Grandfather Clocks

[&] If a Cisco router or switch is to be configured as an NTP Server, which of the following commands must be implemented on that device? (Select the best answer)
- Device(config-if)#ntp server
- Device(config)#ntp server
- Device(config)#ntp master
- Device(config-if)#ntp master