VoIP - Voice Over IP MCQs (Chapterwise Multiple Choice Questions)

Into how many smaller bandwidth channels can a T1 line be subdivided?

6

12

24

48

Answer & Explanation

Correct Answer: 24

Note: This Question is unanswered, help us to find answer for this one

Which of the following is responsible for electrical echo on telephone networks?

Speakerphones

Impedance mismatch

Incorrect voltage

All of the above

Answer & Explanation

Correct Answer: Impedance mismatch

Note: This Question is unanswered, help us to find answer for this one

Which of the following is one of the most important things common in all IP phones?

Global Positioning System (GPS)

Bluetooth

Network Interface Card (NIC)

None of the above

Answer & Explanation

Correct Answer: Network Interface Card (NIC)

Note: This Question is unanswered, help us to find answer for this one

On which layer of the OSI model does TCP & UDP work?

Transport Layer

Session Layer

Presentation Layer

Network Layer

Answer & Explanation

Correct Answer: Transport Layer

Note: This Question is unanswered, help us to find answer for this one

What is a soft phone?

It is a hardware phone especially made for VoIP

It is a software that works on a laptop, desktop or a pocket PC

It is the traditional phone that we use these days

None of the above

Answer & Explanation

Correct Answer: It is a software that works on a laptop, desktop or a pocket PC

Note: This Question is unanswered, help us to find answer for this one

For which of the following services is SS7 responsible?

Basic call setup, management and tearing down of connections

Call forwarding

Calling party number display

All of the above

Answer & Explanation

Correct Answer: All of the above

Note: This Question is unanswered, help us to find answer for this one

Which of the following is the reason for using UDP instead of TCP for voice transmission?

UDP is more reliable as compared to TCP

UDP is fast as compared to TCP

UDP re-transmits any packet lost during transmission whereas TCP does not

All of the above

Answer & Explanation

Correct Answer: UDP is fast as compared to TCP

Note: This Question is unanswered, help us to find answer for this one

Which QoS technique is used to define the maximum size of data packets to prevent excessive serialization delays?

Resource Reservation Protocol

Fragmentation

Queuing

Congestion Avoidance

Header Compression

Answer & Explanation

Correct Answer: Fragmentation

Note: This Question is unanswered, help us to find answer for this one

Which of the following is used by an exchange to convert analog audio to digitized audio?

SS7

PCM

ISDN

DSL

Answer & Explanation

Correct Answer: PCM

Note: This Question is unanswered, help us to find answer for this one

Which of the following signaling protocols can be used with gateways over a VoIP network?

SIP

H.264

H.323

MGCP

Answer & Explanation

Correct Answer: MGCP

Note: This Question is unanswered, help us to find answer for this one

VoIP - Voice Over IP Quick Quiz

Poor Results!

You need a lot of improvement.

Just don't give up!

Correct Answers: 0/10

Start Practicing with our MCQs given below.