SSCA RTP & Media Transport 2

Question 1

What does RTCP stand for?

Accepted Answer

RTP Control Protocol

Answer

Real-Time Control Protocol

Answer

Reliable Transport Control Protocol

Answer

Remote Transfer Control Protocol

Question 2

What percentage of total session bandwidth is typically allocated to RTCP per RFC 3550?

Accepted Answer

5%

Answer

1%

Answer

10%

Answer

20%

Question 3

Which RTCP packet type provides statistics from an active media sender?

Accepted Answer

SR (Sender Report)

Answer

RR (Receiver Report)

Answer

SDES (Source Description)

Answer

BYE

Question 4

Which quality metric included in an RTCP Receiver Report measures variability in packet arrival times?

Accepted Answer

Interarrival jitter

Answer

Codec bitrate

Answer

Round-trip time

Answer

Encryption overhead

Question 5

How is 'jitter' defined in the context of VoIP media transport?

Accepted Answer

Variation in the delay between successive RTP packet arrivals

Answer

The total number of packets lost during a session

Answer

The difference between original and decoded audio quality

Answer

The one-way propagation delay from sender to receiver

Question 6

What is the primary purpose of a jitter buffer in a VoIP endpoint?

Accepted Answer

To hold incoming packets briefly so late arrivals can be played in correct order

Answer

To compress audio packets before transmission

Answer

To encrypt RTP streams at the endpoint

Answer

To retransmit lost RTP packets automatically

Question 7

Which RTCP packet type signals that a participant is leaving an RTP session?

Accepted Answer

BYE

Answer

SR (Sender Report)

Answer

RR (Receiver Report)

Answer

SDES (Source Description)