Which field of a Real-Time Transport Protocol packet allows receiving devices to detect lost packets?
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A. B. C. D.C.
https://www.oreilly.com/library/view/packet-guide-to/9781449339661/ch04.htmlThe field of a Real-Time Transport Protocol (RTP) packet that allows receiving devices to detect lost packets is the sequence number.
RTP is a protocol used for delivering audio and video over IP networks. It provides real-time transmission of multimedia data between endpoints, such as voice and video calls. RTP uses a sequence number to uniquely identify each packet in a stream. This sequence number is incremented for every packet sent in the stream, and allows the receiving device to identify if any packets have been lost during transmission.
When a receiving device receives RTP packets, it checks the sequence numbers of each packet to ensure that there are no gaps in the sequence. If a packet with a missing sequence number is detected, it is assumed to be lost and the receiving device can request a retransmission of that packet from the sender. This is done to ensure that the audio or video being received is smooth and uninterrupted.
Therefore, the correct answer to the question is C. sequence number.