VoIP protocols, QoS, and unified communications concepts tested on Network+.
40 cards · basic cards · AI-written, checked twice. Edit anything.
- What does SIP stand for in VoIP?
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Session Initiation Protocol- What protocol does SIP use to establish call sessions?
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SIP uses request-response transactions over UDP or TCP- What default port does SIP use?
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Port 5060 for SIP signaling (5061 for SIP over TLS)- What does RTP stand for?
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Real-Time Transport Protocol- What is the primary function of RTP in VoIP?
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RTP carries the actual voice data and provides timestamps and sequence numbers for packet delivery- What does RTCP stand for?
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Real-Time Transport Control Protocol- What is the purpose of RTCP in a VoIP call?
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RTCP provides feedback on the quality and delivery statistics of RTP streams- What is a voice codec?
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Software or hardware that compresses and decompresses voice signals for VoIP transmission- Name a commonly used VoIP codec and its bit rate.
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G.711 uses 64 Kbps, or G.729 uses 8 Kbps- What does QoS stand for in networking?
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Quality of Service- Why is QoS critical for VoIP deployments?
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VoIP is sensitive to latency, jitter, and packet loss; QoS prioritizes voice traffic to maintain call quality- What is latency in the context of VoIP?
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The delay between when voice is spoken and when it is heard on the other end- What is the recommended maximum one-way latency for VoIP?
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150 milliseconds- What is jitter in VoIP?
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Variation in the delay of packet arrival, causing voice to sound choppy or distorted- What is packet loss in VoIP and how does it affect calls?
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When voice packets do not reach the destination; causes audio dropouts and decreased intelligibility
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