Chapter Review Questions


1.

What are the names of the two wires used by a traditional home phone to carry voice traffic and signaling information? (Select two.)

  1. Ground

  2. Tip

  3. Magneto

  4. Ring

2.

Who invented the first direct-dial telephone switch?

  1. Thomas Watson

  2. Almond Brown Strowger

  3. Alexander Graham Bell

  4. Harry Nyquist

3.

Which type of telephone switch is most appropriate for a business needing to support 10,000 phones?

  1. CO switch

  2. Key system

  3. PBX

  4. Ethernet switch

4.

Identify three types of signaling used on PSTN networks.

  1. Information

  2. Address

  3. Fallback

  4. Supervisory

5.

How many voice channels can be carried over a T1 circuit in a traditional PSTN/PBX environment?

  1. 16

  2. 24

  3. 30

  4. 64

6.

"Dial tone" is an example of which type of signaling?

  1. Information

  2. Address

  3. Fallback

  4. Supervisory

7.

Which of the following are potential advantages of a VoIP network? (Select three.)

  1. Reduced dedicated circuit costs

  2. More mature technology than PBX/key system approaches

  3. Lays a foundation for more advanced services

  4. Reduced physical plant costs

8.

How much voltage does a telephone switch apply across the tip and ring wires?

  1. -48 volts of DC

  2. -48 volts of AC

  3. +90 volts of DC

  4. +90 volts of AC

9.

Which VoIP component is used to forward calls between different types of networks?

  1. Call agent

  2. Gatekeeper

  3. Gateway

  4. MCU

10.

Which VoIP component is used to mix multiple audio streams?

  1. Call agent

  2. Gateway

  3. Gatekeeper

  4. MCU




Voice over IP First-Step
Voice over IP First-Step
ISBN: 1587201569
EAN: 2147483647
Year: 2005
Pages: 138
Authors: Kevin Wallace

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