SSCA VoIP Technologies & Network Integration

Question 1

What is the main advantage of VoIP over traditional telephony?

Accepted Answer

It offers cost savings and flexibility

Answer

It requires expensive hardware.

Answer

It transmits data over the public switched telephone network.

Answer

It uses analog signals for communication.

Question 2

Which protocol is most commonly used for VoIP signaling?

Accepted Answer

SIP

Answer

HTTP

Answer

SMTP

Answer

FTP

Question 3

Which component is responsible for converting analog voice signals into digital data for VoIP?

Accepted Answer

Codec

Answer

Repeater

Answer

Router

Answer

Switch

Question 4

What function does a VoIP gateway perform?

Accepted Answer

Translates analog and digital voice signals

Answer

Converts IP packets to web pages

Answer

Connects users to the internet

Answer

Provides DNS services

Question 5

Which layer of the OSI model is primarily responsible for VoIP signaling?

Accepted Answer

Application Layer

Answer

Physical Layer

Answer

Data Link Layer

Answer

Network Layer

Question 6

Which of the following is a common codec used in VoIP communication?

Accepted Answer

G.711

Answer

JPEG

Answer

MP4

Answer

MPEG

Question 7

Why is Quality of Service (QoS) important for VoIP?

Accepted Answer

It prioritizes voice traffic to ensure clarity

Answer

It enhances email delivery speed.

Answer

It optimizes video buffering.

Answer

It manages database queries.

Question 8

Which device typically handles call routing in a VoIP network?

Accepted Answer

SIP proxy

Answer

Firewall

Answer

Switch

Answer

Load balancer

Question 9

Which type of network topology is often used in VoIP systems for redundancy?

Accepted Answer

Mesh

Answer

Star

Answer

Bus

Answer

Ring