Business Phone Systems VoIP Fundamentals

Question 1

What does VoIP stand for?

Accepted Answer

Voice over Internet Protocol

Answer

Virtual Office IP

Answer

Video over Internet Protocol

Answer

Voice of Interactive Platform

Question 2

Which protocol is most commonly used for signaling in VoIP systems?

Accepted Answer

SIP

Answer

FTP

Answer

SMTP

Answer

HTTP

Question 3

What is a codec in the context of VoIP?

Accepted Answer

A device that compresses and decompresses audio data

Answer

A type of network switch

Answer

A firewall rule for voice traffic

Answer

A billing software module

Question 4

What quality issue occurs when VoIP packets arrive out of order?

Accepted Answer

Jitter

Answer

Latency

Answer

Packet loss

Answer

Echo

Question 5

Which port does SIP typically use for unencrypted signaling?

Accepted Answer

5060

Answer

443

Answer

80

Answer

3306

Question 6

What is the recommended maximum one-way latency for acceptable VoIP call quality?

Accepted Answer

150 ms

Answer

500 ms

Answer

1000 ms

Answer

50 ms