Phone Service Business VoIP Technology & Protocols

Question 1

What does VoIP stand for?

Accepted Answer

Voice over Internet Protocol

Answer

Virtual Office IP

Answer

Video over Internet Protocol

Answer

Voice on Internal Phone

Question 2

Which protocol is most commonly used for initiating and terminating VoIP calls?

Accepted Answer

SIP

Answer

RTP

Answer

H.323

Answer

MGCP

Question 3

What protocol is used to actually transport the audio data during a VoIP call?

Accepted Answer

RTP

Answer

SIP

Answer

DNS

Answer

HTTPS

Question 4

What is jitter in the context of VoIP quality?

Accepted Answer

Variation in packet arrival times that causes choppy audio

Answer

Background noise from HVAC systems

Answer

A type of VoIP codec

Answer

Call dropping due to bandwidth limits

Question 5

Which VoIP codec is known for providing high-definition voice quality and is commonly supported by modern business phones?

Accepted Answer

G.722

Answer

G.711

Answer

G.729

Answer

iLBC

Question 6

What is a SIP trunk used for in business telephony?

Accepted Answer

Connecting a business PBX to the public telephone network via the internet

Answer

Storing voicemail messages

Answer

Managing internal extensions only

Answer

Routing emails to phone extensions