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CompTIA Network plus Certification Study Guide

Glen Clarke

Chapter 9

Wide Area Network Technologies - all with Video Answers

Educators

Chapter Questions

Problem 1

. Which switching technology is used by the telephone company?
A. Packet
B. Circuit
C. WAN
D. Hub

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Problem 2

Which switching method allows for data transmissions even when part of the network fails?
A. Packet
B. Circuit
C. WAN
D. Hub


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Problem 3

In which area networking environments is ATM usable?
A. Dial-up
B. Workgroup
C. WAN
D. LAN

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03:38

Problem 4

What is the size of a cell in an ATM network?
A. 48 bytes
B. 5 bytes
C. 53 bytes
D. 512 bytes

James Chok
James Chok
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Problem 5

How many streams does the SONET network transfer?
A. 1
B. 2
C. 3
D. 4 or more

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Problem 6

Which of the following is in the form of electrical pulses on a SONET network?
A. STM
B. STS
C. PTE
D. LTE

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Problem 7

What can be used in a SONET network to allow a user's data to remain private?
A. Multiplexer
B. PTE
C. LTE
D. Scrambler

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Problem 8

What is the speed of one SONET level?
A. $32.24 \mathrm{Mbps}$
B. $51.84 \mathrm{Mbps}$
C. $64.08 \mathrm{Mbps}$
D. $155.52 \mathrm{Mbps}$


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02:29

Problem 9

What levels are the $O C$ levels matched to?
A. ATM
B. $\mathrm{SDH}$
C. SONET
D. T1

Adriano Chikande
Adriano Chikande
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01:46

Problem 10

What is the highest OC level?
A. 32
B. 64
C. 128
D. 192

Manik Pulyani
Manik Pulyani
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Problem 11

How is error checking managed on a Frame Relay network?
A. By network devices
B. By the user at the sending $\mathrm{PC}$
C. By the user at the receiving $\mathrm{PC}$
D. By the protocol used

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02:53

Problem 12

If the network is congested and the destination device requests that the source device slow its transmission, what will occur?
A. The source will stop responding for 30 seconds and then continue transmitting.
B. The source will find a different route to send the data.
C. The destination will drop all packets for 30 seconds.
D. Possibly nothing.

Samriddhi Singh
Samriddhi Singh
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Problem 13

What happens if a company uses more bandwidth than it has paid for?
A. Its packets will be dropped no matter the state of the network.
B. Its packets will be delivered even if the network is busy.
C. Its packets will be delivered if the bandwidth is available.
D. Its packets will be delivered no matter the state of the network.


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Problem 14

. If the primary ring fails, what is used for redundancy?
A. The entire secondary ring
B. A portion of the primary ring that has not failed, and a part of the secondary ring that is equal to the primary ring that failed
C. A portion of the primary ring that has not failed, and a part of the secondary ring that is equal to the primary ring that has not failed
D. A portion of the primary ring that failed, and a part of the secondary ring that is equal to the primary ring that has failed

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05:07

Problem 15

How does the token pass on the rings when functioning normally?
A. From one ring to the other
B. Randomly
C. In opposite directions
D. In the same direction

Sanjeev Kumar
Sanjeev Kumar
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Problem 16

At what speed does FDDI operate?
A. $10 \mathrm{Mbps}$
B. $100 \mathrm{Mbps}$
C. $1 \mathrm{Gbps}$
D. $2 \mathrm{Gbps}$

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02:07

Problem 17

. In what countries do E-carriers operate? (Choose all that apply.)
A. Japan
B. Europe
C. Mexico
D. South America

Lily An
Lily An
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Problem 18

How many channels make up a T1?
A. 6
B. 12
C. 24
D. 48


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Problem 19

. Which high-speed Internet service uses the phone lines?
A. Cable modem
B. T1
C. T3
D. ADSL

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Problem 20

. Which high-speed Internet service supplies the Internet data as its own channel over the television cable?
A. Cable modem
B. T1
C. T3
D. ADSL

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01:34

Problem 21

At which frequency is the Internet data supplied with ADSL?
A. $0-3.4 \mathrm{KHz}$
B. Above $3.4 \mathrm{KHz}$
C. $9-12 \mathrm{KHz}$
D. $100-200 \mathrm{KHz}$

Arpit Gupta
Arpit Gupta
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