READ Free Dumps For Cisco- 400-051
| Question ID 12913 | Which two VoIP protocols use SDP to describe streaming media sessions? (Choose two.) |
| Option A | SCCP |
| Option B | H.323 |
| Option C | SIP |
| Option D | MGCP |
| Option E | RAS |
| Option F | Answer : C,D Explanation: The Session Description Protocol (SDP), defined in RFC 2327, describes the content of sessions, including telephony, Internet radio, and multimedia applications. SDP includes information about [8]:
A session can include multiple streams of differing content. SDP currently defines audio, video, data, control, and application as stream types, similar to the MIME types used for Internet mail.
Addresses: SDP indicates the destination addresses, which may be a multicast address, for a media stream.
For each stream, the UDP port numbers for sending and receiving are specified.
Payload types: For each media stream type in use (for example, telephony), the payload type indicates the media formats that can be used during the session.
Start and stop times: These apply to broadcast sessions, for example, a television or radio program. The start, stop, and repeat times of the session are indicated.
Originator: For broadcast sessions, the originator is specified, with contact information. This may be useful if a receiver encounters technical difficulties. |
| Correct Answer | C,D |
| Question ID 12914 | Which two SCCP call signaling messages are initiated by Cisco Unified Communications |
| Option A | SoftKeyEvent |
| Option B | CloseReceiveChannelAck |
| Option C | CallState |
| Option D | KeypadButton |
| Option E | OpenReceiveChannel |
| Option F | Offhook |
| Correct Answer | C,E |