READ Free Dumps For Cisco- 400-051
| Question ID 12903 | Which two SDP content headers can be found in a SIP INVITE message? (Choose two.)
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| Option A | Expires
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| Option B | Contact
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| Option C | Connection Info
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| Option D | Media Attributes
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| Option E | Allow
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| Option F | CSeq
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| Correct Answer | C,D |
Explanation Explanation: Connection info is optional field in SDP whether Media attributes decide the codec and media type for that call.
| Question ID 12904 | What is the name of the logical channel proposal that is transmitted from the called entity to
the calling entity in H.323 Fast Connect?
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| Option A | Forward Logical Channel
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| Option B | Backward Logical Channel
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| Option C | Reverse Logical Channel
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| Option D | Originator Logical Channel
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| Option E | Destination Logical Channel
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| Correct Answer | C |
Explanation Explanation: Unlike the OpenLogicalChannel request used by H.323 for video uni-directional logical channels, the request used by H.324 for opening video bi-directional logical channels specifies the temporalSpatialTradeOff Capability in both the forward and reverse directions- -in the forwardLogicalChannelParameters.dataTypeandreverseLogicalChannelParameters.dataTy pe components, respectively. The semantics of temporalSpatialTradeOffCapability used in forward LogicalChannelParameters.dataType is described in the previous section. The semantics for its presence in the reverse direction is described in this section.