| Exam 640-875 | Question id=4852 | Cisco Operating Systems and Platforms I |
Which two statements about Cisco IOS XR NTP configuration are true?
| A. |
A network device can obtain NTP time information in three ways: polling the NTP server, listening to NTP broadcasts, and listening to NTP multicasts. | |
| B. |
NTP authentication supports MD5, SHA1, or SHA2. | |
| C. |
Client mode is a peer-to-peer mode. | |
| D. |
The two types of poll-based NTP associations are client mode and symmetric active mode. | |
| E. |
The Cisco IOS-XR implementation of NTP supports stratum 1 service. | |
| F. |
In client mode, clients can dynamically learn the NTP sever IP address by listening to the NTP server broadcasts or multicasts. |