Business Phone Systems VoIP Fundamentals 2

Question 1

What does RTP stand for in VoIP communications?

Accepted Answer

Real-time Transport Protocol

Answer

Remote Telephony Platform

Answer

Routing Transfer Protocol

Answer

Registered Trunk Protocol

Question 2

Which VoIP codec offers the highest audio quality with the most bandwidth usage?

Accepted Answer

G.711

Answer

G.729

Answer

G.723.1

Answer

iLBC

Question 3

What is a SIP trunk?

Accepted Answer

A virtual phone line connecting a PBX to the PSTN via the internet

Answer

A physical cable for analog phones

Answer

A type of voicemail system

Answer

A conference bridge hardware unit

Question 4

What does NAT traversal solve in VoIP deployments?

Accepted Answer

Allows VoIP traffic to pass through network address translation firewalls

Answer

Encrypts voice packets end-to-end

Answer

Reduces codec bandwidth consumption

Answer

Manages call routing tables

Question 5

Which quality metric measures the percentage of VoIP packets that fail to reach their destination?

Accepted Answer

Packet loss

Answer

Jitter

Answer

Latency

Answer

MOS score

Question 6

What is SRTP used for in VoIP?

Accepted Answer

Encrypting voice media streams

Answer

Routing calls between extensions

Answer

Managing voicemail storage

Answer

Load balancing SIP servers