Question 1

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

Accepted Answer

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

Question 2

All VoIP calls are carried over the Internet.

Accepted Answer

A) True 
 B)False

Question 3

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

Accepted Answer

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

Question 4

MATCHING
Match each item with a statement below:
a.H.323 terminal
f.H.225
b.H.323 gateway
g.H.245
c.H.323 gatekeeper
h.RTP
d.MCU (multipoint control unit)
i.RSVP
e.H.323 zone
-Any node that provides audio,visual,or data information to another node.

Accepted Answer

The answer of MATCHING
Match each item with a statement below:
a.H.323...

Question 5

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)

Question 6

MATCHING
Match each item with a statement below:
a.H.323 terminal
f.H.225
b.H.323 gateway
g.H.245
c.H.323 gatekeeper
h.RTP
d.MCU (multipoint control unit)
i.RSVP
e.H.323 zone
-A collection of H.323 terminals,gateways,and MCUs that are managed by a single H.323 gatekeeper.

Accepted Answer

The answer of MATCHING
Match each item with a statement below:
a.H.323...

Question 7

When a caller uses an IP telephone,his or her voice is immediately digitized and issued from the telephone to the network in ____ form.

Accepted Answer

A)  segment 
B)  frame 
C)  circuit 
D)  packet

Question 8

Describe the RTCP (Real-time Transport Control Protocol),defined in RFC 3550 by the IETF.

Accepted Answer

The answer of Describe the RTCP (Real-time Transport Control Protocol),defined...

Question 9

Explain why UDP is preferred over TCP for real-time applications such as telephone conversations and videoconferences.

Accepted Answer

The answer of Explain why UDP is preferred over TCP...

Question 10

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

Question 11

In general,a(n)____ is a private switch that accepts and interprets both analog and digital voice signals.

Accepted Answer

A)  IP-PBX 
B)  analog PBX 
C)  Data PBX 
D)  IT-PBX

Question 12

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

Accepted Answer

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

Question 13

Describe five features unique to IP telephones.

Accepted Answer

The answer of Describe five features unique to IP telephones....

Question 14

MATCHING
Match each item with a statement below:
a.H.323 terminal
f.H.225
b.H.323 gateway
g.H.245
c.H.323 gatekeeper
h.RTP
d.MCU (multipoint control unit)
i.RSVP
e.H.323 zone
-Helps voice and video networks overcome UDP's shortcomings.

Accepted Answer

The answer of MATCHING
Match each item with a statement below:
a.H.323...

Question 15

A computer programmed to act like an IP telephone is known as a(n)____.

Accepted Answer

A)  video phone 
B)  softphone 
C)  streaming server 
D)  compu-phone

Question 16

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

Question 17

When more than two people participate in a videoconference,for example,in a point-to-multipoint or multipoint-to-multipoint scenario,a video ____ is required.

Accepted Answer

A)  bridge 
B)  switch 
C)  gateway 
D)  router

Question 18

Besides being extremely mobile,describe another advantage to softphones.

Accepted Answer

The answer of Besides being extremely mobile,describe another advantage to...

Question 19

MATCHING
Match each item with a statement below:
a.H.323 terminal
f.H.225
b.H.323 gateway
g.H.245
c.H.323 gatekeeper
h.RTP
d.MCU (multipoint control unit)
i.RSVP
e.H.323 zone
-A device providing translation between network devices running H.323 signaling protocols and devices running other types of signaling protocols.

Accepted Answer

The answer of MATCHING
Match each item with a statement below:
a.H.323...

Question 20

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

Accepted Answer

A) True 
 B)False

Exam 11: Voice and Video Over IP

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

All VoIP calls are carried over the Internet.

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

MATCHING Match each item with a statement below: a.H.323 terminal f.H.225 b.H.323 gateway g.H.245 c.H.323 gatekeeper h.RTP d.MCU (multipoint control unit) i.RSVP e.H.323 zone -Any node that provides audio,visual,or data information to another node.

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

MATCHING Match each item with a statement below: a.H.323 terminal f.H.225 b.H.323 gateway g.H.245 c.H.323 gatekeeper h.RTP d.MCU (multipoint control unit) i.RSVP e.H.323 zone -A collection of H.323 terminals,gateways,and MCUs that are managed by a single H.323 gatekeeper.

When a caller uses an IP telephone,his or her voice is immediately digitized and issued from the telephone to the network in ____ form.

Describe the RTCP (Real-time Transport Control Protocol),defined in RFC 3550 by the IETF.

Explain why UDP is preferred over TCP for real-time applications such as telephone conversations and videoconferences.

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

In general,a(n) ____ is a private switch that accepts and interprets both analog and digital voice signals.

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

Describe five features unique to IP telephones.

MATCHING Match each item with a statement below: a.H.323 terminal f.H.225 b.H.323 gateway g.H.245 c.H.323 gatekeeper h.RTP d.MCU (multipoint control unit) i.RSVP e.H.323 zone -Helps voice and video networks overcome UDP's shortcomings.

A computer programmed to act like an IP telephone is known as a(n) ____.

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

When more than two people participate in a videoconference,for example,in a point-to-multipoint or multipoint-to-multipoint scenario,a video ____ is required.

Besides being extremely mobile,describe another advantage to softphones.

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