Question 1

T-1 is the simplest WAN data service provided by telecom carriers.It has a data rate of _____.

Accepted Answer

A) 64 kbps 
B) 1)544 mbps 
C) 256 kbps 
D) 44.736 mbps 
A) 64 kbps 
B) 1)544 mbps 
C) 256 kbps 
D) 44.736 mbps B

Question 2

ISDN stands for _____.

Accepted Answer

A) inter-state data network 
B) inter-state digital network 
C) improved speed digital network 
D) integrated services digital network 
A) inter-state data network 
B) inter-state digital network 
C) improved speed digital network 
D) integrated services digital network D

Question 3

The goal of ISDN was to _____.

Accepted Answer

A) provide all communication services data,voice,video)over one network 
B) provide a single bill for all communication services 
C) build a network to support data rates up to 10 mbps 
D) None of the above 
A) provide all communication services data,voice,video)over one network 
B) provide a single bill for all communication services 
C) build a network to support data rates up to 10 mbps 
D) None of the above A

Question 4

Compared to point-to-point links,statistically multiplexed WANs improve data link utilization by _____.

Accepted Answer

A) increasing data link capacity 
B) increasing the number of data links available 
C) increasing the number of end users 
D) aggregating traffic 
A) increasing data link capacity 
B) increasing the number of data links available 
C) increasing the number of end users 
D) aggregating traffic

Question 5

Virtual circuit IDs are _____.

Accepted Answer

A) global 
B) shared among neighboring network carriers 
C) local to the network carrier 
D) None of the above 
A) global 
B) shared among neighboring network carriers 
C) local to the network carrier 
D) None of the above

Question 6

In the TCP/ IP stack,WAN technologies are considered to be instances of the _____.

Accepted Answer

A) transport layer 
B) data link layer 
C) network layer 
D) physical layer 
A) transport layer 
B) data link layer 
C) network layer 
D) physical layer

Question 7

Statistically multiplexed WANs are defined by their ability to allocate network resources _____.

Accepted Answer

A) according to defined time slots 
B) according to defined frequencies 
C) according to needs 
D) on a dedicated basis 
A) according to defined time slots 
B) according to defined frequencies 
C) according to needs 
D) on a dedicated basis

Question 8

In data communications,a virtual circuit _____.

Accepted Answer

A) can carry data over various real circuits 
B) cannot really carry data 
C) is another name for the NASCAR circuit 
D) is another name for a circuit 
A) can carry data over various real circuits 
B) cannot really carry data 
C) is another name for the NASCAR circuit 
D) is another name for a circuit

Question 9

ATM specifies data rates in the range of _____.

Accepted Answer

A) 56 kbps - 2 mbps 
B) 56 kbps - 45 mbps 
C) 1)544 mbps - 622.08 mbps 
D) 50.112 mbps - 150.336 mbps 
A) 56 kbps - 2 mbps 
B) 56 kbps - 45 mbps 
C) 1)544 mbps - 622.08 mbps 
D) 50.112 mbps - 150.336 mbps

Question 10

In data communications,the term ATM stands for _____.

Accepted Answer

A) asynchronous transfer mode 
B) automatic teller machine 
C) any time money 
D) any transfer method 
A) asynchronous transfer mode 
B) automatic teller machine 
C) any time money 
D) any transfer method

Question 11

Wide area networks are defined by their ability to _____.

Accepted Answer

A) provide data communication services to a large numbers of users 
B) provide very high bandwidths 
C) provide very high data rates 
D) use wireless technologies 
A) provide data communication services to a large numbers of users 
B) provide very high bandwidths 
C) provide very high data rates 
D) use wireless technologies

Question 12

Frame relay specifies data rates in the range of _____.

Accepted Answer

A) 1)544 mbps - 622.08 mbps 
B) 50.112 mbps - 150.336 mbps 
C) 56 kbps - 2 mbps 
D) 56 kbps - 45 mbps 
A) 1)544 mbps - 622.08 mbps 
B) 50.112 mbps - 150.336 mbps 
C) 56 kbps - 2 mbps 
D) 56 kbps - 45 mbps

Question 13

The statistically multiplexed WAN technology that uses link-by-link acknowledgments _____.is

Accepted Answer

A) frame relay 
B) T-3 
C) ATM 
D) X)25 
A) frame relay 
B) T-3 
C) ATM 
D) X)25

Question 14

The earliest wide area data networks were built using _____.

Accepted Answer

A) phone lines 
B) t-carriers 
C) ATM 
D) X)25 
A) phone lines 
B) t-carriers 
C) ATM 
D) X)25

Question 15

When a device has data to be delivered over a WAN network _____.

Accepted Answer

A) it waits for the medium to become idle 
B) it stops the existing traffic over the medium to send the data 
C) the data is merged with the existing traffic 
D) None of the above 
A) it waits for the medium to become idle 
B) it stops the existing traffic over the medium to send the data 
C) the data is merged with the existing traffic 
D) None of the above

Question 16

When a phone line is used to carry data traffic,the highest data rate possible is _____.

Accepted Answer

A) 32 kbps 
B) 1)544 mbps 
C) 128 kbps 
D) 64 kbps 
A) 32 kbps 
B) 1)544 mbps 
C) 128 kbps 
D) 64 kbps

Question 17

Frequency division multiplexed WANs are used to leverage the data carrying capacity of _____.

Accepted Answer

A) wireless media 
B) copper wires 
C) SONET 
D) optical fiber 
A) wireless media 
B) copper wires 
C) SONET 
D) optical fiber

Question 18

A virtual circuit ID is assigned to _____.

Accepted Answer

A) each autonomous system 
B) each source-destination pair 
C) each source 
D) each destination 
A) each autonomous system 
B) each source-destination pair 
C) each source 
D) each destination

Question 19

The limitations of point-to-point technologies include all of the following except _____.

Accepted Answer

A) they provide very limited opportunities for traffic aggregation 
B) they use a relatively simple technology 
C) a very large number of links may become necessary when networks grow in size 
D) average link utilization can be low 
A) they provide very limited opportunities for traffic aggregation 
B) they use a relatively simple technology 
C) a very large number of links may become necessary when networks grow in size 
D) average link utilization can be low

Question 20

WAN technologies use broadcast.

Accepted Answer

A) True 
 B)False

T-1 is the simplest WAN data service provided by telecom carriers.It has a data rate of _____.

ISDN stands for _____.

The goal of ISDN was to _____.

Compared to point-to-point links,statistically multiplexed WANs improve data link utilization by _____.

Virtual circuit IDs are _____.

In the TCP/ IP stack,WAN technologies are considered to be instances of the _____.

Statistically multiplexed WANs are defined by their ability to allocate network resources _____.

In data communications,a virtual circuit _____.

ATM specifies data rates in the range of _____.

In data communications,the term ATM stands for _____.

Wide area networks are defined by their ability to _____.

Frame relay specifies data rates in the range of _____.

The statistically multiplexed WAN technology that uses link-by-link acknowledgments _____.is

The earliest wide area data networks were built using _____.

When a device has data to be delivered over a WAN network _____.

When a phone line is used to carry data traffic,the highest data rate possible is _____.

Frequency division multiplexed WANs are used to leverage the data carrying capacity of _____.

A virtual circuit ID is assigned to _____.

The limitations of point-to-point technologies include all of the following except _____.

WAN technologies use broadcast.

Introduction

Physical Layer

Data Link Layer

Network Layer

Transport Layer

Application Layer

Support Services

Subnetting

Routing

Wireless Networks

Phone Networks

Network Security

Managerial Issues

Filters

Exam 10: Wide Area Networks

T-1 is the simplest WAN data service provided by telecom carriers.It has a data rate of _____.

ISDN stands for _____.

The goal of ISDN was to _____.

Compared to point-to-point links,statistically multiplexed WANs improve data link utilization by _____.

Virtual circuit IDs are _____.

In the TCP/ IP stack,WAN technologies are considered to be instances of the _____.

Statistically multiplexed WANs are defined by their ability to allocate network resources _____.

In data communications,a virtual circuit _____.

ATM specifies data rates in the range of _____.

In data communications,the term ATM stands for _____.

Wide area networks are defined by their ability to _____.

Frame relay specifies data rates in the range of _____.

The statistically multiplexed WAN technology that uses link-by-link acknowledgments _____.is

The earliest wide area data networks were built using _____.

When a device has data to be delivered over a WAN network _____.

When a phone line is used to carry data traffic,the highest data rate possible is _____.

Frequency division multiplexed WANs are used to leverage the data carrying capacity of _____.

A virtual circuit ID is assigned to _____.

The limitations of point-to-point technologies include all of the following except _____.

WAN technologies use broadcast.

Introduction

Physical Layer

Data Link Layer

Network Layer

Transport Layer

Application Layer

Support Services

Subnetting

Routing

Wireless Networks

Phone Networks

Network Security

Managerial Issues

Filters