Question 1

____ is the use of one network to simultaneously carry voice, video, and data communications.

Accepted Answer

A)  Multicasting 
B)  Unicasting 
C)  Divergence 
D)  Convergence 
A)  Multicasting 
B)  Unicasting 
C)  Divergence 
D)  Convergence D

Question 2

Explain the issue that IP telephones face regarding the need for electric current .

Accepted Answer

One issue that faces IP telephones is the need for electric current. A conventional analog telephone obtains current from the local loop. This is necessary for signaling - for example, to make your phone ring and to provide a dial tone. However, IP telephones are not directly connected to the local loop. Instead, most obtain electric current from a separate power supply. This makes IP telephones susceptible to power outages in a way that analog telephones are not. It also points to the need for assured backup power sources in organizations that rely on IP telephones. In some VoIP installations, IP telephones obtain current via their Ethernet connection using PoE (power over Ethernet).

Question 3

It is more difficult to transmit VoIP and video over IP signals over a packet-switched network than it is to transmit data signals.

Accepted Answer

A) True 
 B)False  True

Question 4

____ signaling functions are more limited than those performed by the protocols in the H.323 group.

Accepted Answer

A)  RTCP 
B)  MGC 
C)  MEGACO 
D)  SIP 
A)  RTCP 
B)  MGC 
C)  MEGACO 
D)  SIP

Question 5

SIP and H.323 account for communication between media gateways.

Accepted Answer

A) True 
 B)False

Question 6

____ is preferred over TCP for real-time applications such as telephone conversations and videoconferencing.

Accepted Answer

A)  RTP 
B)  UDP 
C)  RTCP 
D)  SIP 
A)  RTP 
B)  UDP 
C)  RTCP 
D)  SIP

Question 7

SIP and H.323 regulate ____ for VoIP or video-over-IP clients and servers.

Accepted Answer

A)  call signaling only 
B)  control only 
C)  call signaling and control 
D)  communication between media gateways 
A)  call signaling only 
B)  control only 
C)  call signaling and control 
D)  communication between media gateways

Question 8

____ is a measure of how well a network service matches its expected performance.

Accepted Answer

A)  QoS 
B)  RSVP 
C)  DiffServ 
D)  MPLS 
A)  QoS 
B)  RSVP 
C)  DiffServ 
D)  MPLS

Question 9

An off-the-shelf workstation can be programmed to act like an IP telephone.

Accepted Answer

A) True 
 B)False

Question 10

One drawback to ____ video is that content may not be edited before it's distributed.

Accepted Answer

A)  on demand 
B)  live streaming 
C)  streaming server 
D)  VoIP 
A)  on demand 
B)  live streaming 
C)  streaming server 
D)  VoIP

Question 11

Many streaming video services - and nearly all of those issued over a public network, such as the Internet - are examples of ____ transmissions.

Accepted Answer

A)  multicast 
B)  broadcast 
C)  unicast 
D)  telecast 
A)  multicast 
B)  broadcast 
C)  unicast 
D)  telecast

Question 12

____ messaging is a service that makes several forms of communication available from a single user interface.

Accepted Answer

A)  Unified 
B)  Instant 
C)  Diversified 
D)  Open 
A)  Unified 
B)  Instant 
C)  Diversified 
D)  Open

Question 13

IP telephones are directly connected to the local loop.

Accepted Answer

A) True 
 B)False

Question 14

Explain how gateways on a converged network exchange and translate signaling and control information with each other so that voice and video packets are properly routed through the network.

Accepted Answer

Gateways rely on an intermediate device

Question 15

Among all video-over-IP applications, ____is perhaps the simplest.

Accepted Answer

A)  VoIP 
B)  videoconferencing 
C)  IPTV 
D)  streaming video 
A)  VoIP 
B)  videoconferencing 
C)  IPTV 
D)  streaming video

Question 16

When VoIP relies on the Internet, it is often called ____.

Accepted Answer

A)  telephony 
B)  Internet telephony 
C)  IP telephony 
D)  voice telephony 
A)  telephony 
B)  Internet telephony 
C)  IP telephony 
D)  voice telephony

Question 17

The popular Internet telephony software, Skype, is a type of ____.

Accepted Answer

A)  IP telephone 
B)  softphone 
C)  teleapplication 
D)  compu-phone 
A)  IP telephone 
B)  softphone 
C)  teleapplication 
D)  compu-phone

Question 18

When using an analog telephone, a VoIP adapter that performs analog-to-digital conversion is known as a(n) ____.

Accepted Answer

A)  VTA (voice telephone adapter) 
B)  ATA (analog telephone adapter) 
C)  DTA (digital telephone adapter) 
D)  DTA (data telephone adapter) 
A)  VTA (voice telephone adapter) 
B)  ATA (analog telephone adapter) 
C)  DTA (digital telephone adapter) 
D)  DTA (data telephone adapter)

Question 19

Describe six functions performed by signaling protocols.

Accepted Answer

Some functions performed by signaling pr

Question 20

IPTV, videoconferencing, streaming video, and IP multicasting belong to the range of services known as ____.

Accepted Answer

A)  voice over IP 
B)  data over IP 
C)  video over IP 
D)  Web over IP 
A)  voice over IP 
B)  data over IP 
C)  video over IP 
D)  Web over IP

____ is the use of one network to simultaneously carry voice, video, and data communications.

Explain the issue that IP telephones face regarding the need for electric current .

It is more difficult to transmit VoIP and video over IP signals over a packet-switched network than it is to transmit data signals.

____ signaling functions are more limited than those performed by the protocols in the H.323 group.

SIP and H.323 account for communication between media gateways.

____ is preferred over TCP for real-time applications such as telephone conversations and videoconferencing.

SIP and H.323 regulate ____ for VoIP or video-over-IP clients and servers.

____ is a measure of how well a network service matches its expected performance.

An off-the-shelf workstation can be programmed to act like an IP telephone.

One drawback to ____ video is that content may not be edited before it's distributed.

Many streaming video services - and nearly all of those issued over a public network, such as the Internet - are examples of ____ transmissions.

____ messaging is a service that makes several forms of communication available from a single user interface.

IP telephones are directly connected to the local loop.

Explain how gateways on a converged network exchange and translate signaling and control information with each other so that voice and video packets are properly routed through the network.

Among all video-over-IP applications, ____is perhaps the simplest.

When VoIP relies on the Internet, it is often called ____.

The popular Internet telephony software, Skype, is a type of ____.

When using an analog telephone, a VoIP adapter that performs analog-to-digital conversion is known as a(n) ____.

Describe six functions performed by signaling protocols.

IPTV, videoconferencing, streaming video, and IP multicasting belong to the range of services known as ____.

An Introduction to Networking

Network Standards and the OSI Model

Transmission Basics and Networking Media

Introduction to TCP/IP Protocols

Topologies and Ethernet Standards

Network Hardware, Switching, and Routing

Wide Area Networks

Wireless Networking

In-Depth TCP/IP Networking

Virtual Networks and Remote Access

Network Security

Troubleshooting Network Problems

Ensuring Integrity and Availability

Network Management

Filters

Exam 12: Voice and Video Over IP

____ is the use of one network to simultaneously carry voice, video, and data communications.

Explain the issue that IP telephones face regarding the need for electric current .

It is more difficult to transmit VoIP and video over IP signals over a packet-switched network than it is to transmit data signals.

____ signaling functions are more limited than those performed by the protocols in the H.323 group.

SIP and H.323 account for communication between media gateways.

____ is preferred over TCP for real-time applications such as telephone conversations and videoconferencing.

SIP and H.323 regulate ____ for VoIP or video-over-IP clients and servers.

____ is a measure of how well a network service matches its expected performance.

An off-the-shelf workstation can be programmed to act like an IP telephone.

One drawback to ____ video is that content may not be edited before it's distributed.

Many streaming video services - and nearly all of those issued over a public network, such as the Internet - are examples of ____ transmissions.

____ messaging is a service that makes several forms of communication available from a single user interface.

IP telephones are directly connected to the local loop.

Explain how gateways on a converged network exchange and translate signaling and control information with each other so that voice and video packets are properly routed through the network.

Among all video-over-IP applications, ____is perhaps the simplest.

When VoIP relies on the Internet, it is often called ____.

The popular Internet telephony software, Skype, is a type of ____.

When using an analog telephone, a VoIP adapter that performs analog-to-digital conversion is known as a(n) ____.

Describe six functions performed by signaling protocols.

IPTV, videoconferencing, streaming video, and IP multicasting belong to the range of services known as ____.

An Introduction to Networking

Network Standards and the OSI Model

Transmission Basics and Networking Media

Introduction to TCP/IP Protocols

Topologies and Ethernet Standards

Network Hardware, Switching, and Routing

Wide Area Networks

Wireless Networking

In-Depth TCP/IP Networking

Virtual Networks and Remote Access

Network Security

Troubleshooting Network Problems

Ensuring Integrity and Availability

Network Management

Filters