Site MapHelpFeedbackMixed Quiz
Mixed Quiz
(See related pages)



1

SONET is a standard for _______ networks.
A)Twisted-pair cable
B)Fiber-optic cable
C)Coaxial cable
D)Ethernet
2

_______ limit the bandwidth of the local loop to 4 KHz.
A)Fiber nodes
B)Repeaters
C)Filters
D)Hubs
3

The actual bit rate of ADSL downstream data is _______.
A)6 to 30 Kbps
B)64 Kbps to 1 Mbps
C)500 Kbps to 8 Mbps
D)31 Kbps to 255 Mbps
4

_______ is a device at the telephone company site that can packetize data to be sent to the ISP server.
A)A filter
B)A splitter
C)A DSLAM
D)An ADSL modem
5

The standard for data transmission over an HFC network is called _______.
A)DOCSIS
B)CMTS
C)MCNS
D)ADSL
6

DMT is a modulation technique that combines elements of _______ and _______.
A)FDM; TDM
B)QDM; QAM
C)PSK; FSK
D)FDM; QAM
7

The _______ is an HFC network device installed inside the distribution hub that receives data from the Internet and passes them to the combiner.
A)DOCSIS
B)MCNS
C)CM
D)CMTS
8

HDSL encodes data using _______.
A)6B/8T
B)4B/5B
C)2B1Q
D)1B2Q
9

_______ encoded signal is more susceptible to attenuation than _______ encoded signal.
A)An AMI; a 2B1Q
B)An AMI; a 2B2Q
C)A 2B1Q; an AMI
D)None of the above
10

Another name for the cable TV office is the _______.
A)Fiber node
B)Combiner
C)Head end
D)Splitter
11

A traditional cable TV network transmits signals ______.
A)Upstream and downstream
B)Upstream
C)Downstream
D)None of the above
12

_______ was designed as an alternative to the T-1 line.
A)VDSL
B)SDSL
C)HDSL
D)ADSL
13

The synchronous payload envelope of an STS-1 frame contains _______.
A)Pointers
B)User data
C)Overhead
D)(b) and (c)
14

_______ has a higher transmission rate in the downstream direction than in the upstream direction.
A)VDSL
B)ADSL
C)SDSL
D)(a) and (b)
15

An HFC network uses _______ as the medium from the switch to the fiber node.
A)UTP
B)STP
C)Optical fiber
D)Coaxial cable
16

In an HFC network, the distribution hub handles the _______ of signals.
A)Modulation
B)Distribution
C)Splitting
D)(a) and (b)
17

A TV channel in an HFC network needs a _______-MHz bandwidth.
A)369
B)6
C)100
D)250
18

_______ data go from the subscriber to the Internet.
A)Downstream
B)Upstream
C)Midstream
D)None of the above
19

In an HFC network, the upstream data are modulated using the _______ modulation technique.
A)PCM
B)QAM
C)QPSK
D)ASK
20

_______ is suitable for businesses that require comparable upstream and downstream data rates.
A)SDSL
B)VDSL
C)ADSL
D)(a) and (b)
21

SONET is an acronym for _______ Network.
A)Standard Optical
B)Symmetric Open
C)Synchronous Optical
D)Standard Open
22

The largest portion of the bandwidth for ADSL carries _______.
A)Voice communication
B)Downstream data
C)Upstream data
D)Control data
23

In a SONET system, _______ can remove signals from a path.
A)An add/drop multiplexer
B)A repeater
C)An STS multiplier
D)A regenerator





To learn more about the book this website supports, please visit its Information Center.
(c)2004 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.


Forouzan: DCNOnline Learning Center

Home > Chapter 9 > Mixed Quiz