Deck 14: Module C More on Telecommunications
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Deck 14: Module C More on Telecommunications
1
Satellite ________ operate on a point-to-point basis.
A)uplinks
B)downlinks
C)both A and B
D)neither A nor B
A)uplinks
B)downlinks
C)both A and B
D)neither A nor B
A
2
In TDM,time is first divided into brief periods called ________.
A)packets
B)frames
C)slots
D)cells
A)packets
B)frames
C)slots
D)cells
B
3
PSTN signaling in the United States uses ________.
A)SS7
B)ATM
C)TDM
D)SIP
A)SS7
B)ATM
C)TDM
D)SIP
A
4
SONET/SDH applies ________ when there is a break in a trunk line between switches.
A)the Spanning Tree Protocol
B)wrapping
C)half-duplex transmission
D)full-duplex transmission
A)the Spanning Tree Protocol
B)wrapping
C)half-duplex transmission
D)full-duplex transmission
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5
In data wiring,there needs to be four wires for each computer on the floor in ________.
A)horizontal distribution
B)vertical distribution
C)both A and B
D)neither A nor B
A)horizontal distribution
B)vertical distribution
C)both A and B
D)neither A nor B
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6
In TDM,there are more frames than slots.
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7
Which of the following has an altitude of a few thousand miles?
A)GEOs
B)LEOs
C)MEOs
D)none of the above
A)GEOs
B)LEOs
C)MEOs
D)none of the above
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8
Which of the following is packet-switched?
A)ATM
B)TDM
C)both A and B
D)neither A nor B
A)ATM
B)TDM
C)both A and B
D)neither A nor B
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9
Plenum wiring is needed for ________.
A)heavy traffic loads
B)safety
C)both A and B
D)neither A nor B
A)heavy traffic loads
B)safety
C)both A and B
D)neither A nor B
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10
Which of the following is good for mobile stations?
A)GEOs
B)LEOs
C)both A and B
D)neither A nor B
A)GEOs
B)LEOs
C)both A and B
D)neither A nor B
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11
A ring topology is attractive because it brings ________.
A)higher speed
B)lower cost
C)greater reliability
D)all of the above
A)higher speed
B)lower cost
C)greater reliability
D)all of the above
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12
Incompatibilities between signaling systems in the United States and Europe cause serious problems.
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13
Which of the following is NOT one of the three categories of PBX services?
A)attendant services
B)management services
C)advanced services
D)user services
A)attendant services
B)management services
C)advanced services
D)user services
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14
In TDM,a voice conversation gets the same ________ in each ________.
A)frame, packet
B)packet, frame
C)frame, slot
D)slot, frame
A)frame, packet
B)packet, frame
C)frame, slot
D)slot, frame
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15
Because of the curvature of the earth,microwave systems that must travel over long distances need ________.
A)to operate at low frequencies
B)to operate at high frequencies
C)repeaters
D)mirrors
A)to operate at low frequencies
B)to operate at high frequencies
C)repeaters
D)mirrors
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16
In telephone wiring,there needs to be four wires for each computer on the floor in ________.
A)horizontal distribution
B)vertical distribution
C)both A and B
D)neither A nor B
A)horizontal distribution
B)vertical distribution
C)both A and B
D)neither A nor B
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17
SONET/SDH uses a ________ topology.
A)point-to-point
B)hierarchy
C)mesh
D)ring
A)point-to-point
B)hierarchy
C)mesh
D)ring
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18
Cross-connect devices are found in ________.
A)PBXs
B)equipment rooms
C)telecommunications closets
D)switches
A)PBXs
B)equipment rooms
C)telecommunications closets
D)switches
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19
ATM provides quality-of-service for voice.
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20
________ is/are widely used in Europe for PSTN signaling.
A)C7
B)SS7
C)Both A and B
D)Neither A nor B
A)C7
B)SS7
C)Both A and B
D)Neither A nor B
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21
Which of the following was set up primarily to provide long-distance telephone service after the breakup of the Bell System in the early 1980s?
A)AT&T
B)RBOCs
C)both A and B
D)neither A nor B
A)AT&T
B)RBOCs
C)both A and B
D)neither A nor B
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22
Message units are a time and distance pricing method that can be used to charge for local calls.
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23
Call restriction refers to a switch's ability to control incoming calls to a station.
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24
Which of the following is an advanced carrier telephone service?
A)voice mail
B)caller ID
C)both A and B
D)neither A nor B
A)voice mail
B)caller ID
C)both A and B
D)neither A nor B
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25
In the United States,telephone customers can connect to a(n)________ carrier to receive telephone service.
A)ILEC
B)LATA
C)either A or B
D)neither A nor B
A)ILEC
B)LATA
C)either A or B
D)neither A nor B
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26
PTTs were found in ________.
A)Europe
B)the United States
C)both A and B
D)neither A nor B
A)Europe
B)the United States
C)both A and B
D)neither A nor B
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27
For PBXs,nighttime calling is ________.
A)a user service
B)an attendant service
C)a management service
A)a user service
B)an attendant service
C)a management service
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28
For PBXs,camp-on is ________.
A)a user service
B)an attendant service
C)a management service
A)a user service
B)an attendant service
C)a management service
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29
With 900 numbers,the ________ pays and pays ________ per minute than direct distance dialing.
A)caller, more
B)caller, less
C)called party, more
D)called party, less
A)caller, more
B)caller, less
C)called party, more
D)called party, less
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30
Even for local calls,many telephone companies charge by the duration of the call.
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31
Which of the following would a mail order company's customers prefer?
A)900 number service
B)800 number service
C)WATS service
D)They would have no preference among these choices.
A)900 number service
B)800 number service
C)WATS service
D)They would have no preference among these choices.
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32
Local calls are always billed on a flat rate basis where the customer pays a monthly fee for unlimited local calling.
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33
In the United States,telephone customers can connect to a(n)________ carrier to receive telephone service.
A)ILEC
B)CLEC
C)either A or B
D)neither A nor B
A)ILEC
B)CLEC
C)either A or B
D)neither A nor B
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34
With 888 numbers,the ________ pays and pays ________ per minute than direct distance dialing.
A)caller, more
B)caller, less
C)called party, more
D)called party, less
A)caller, more
B)caller, less
C)called party, more
D)called party, less
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35
For PBXs,call forwarding is ________.
A)a user service
B)an attendant service
C)a management service
A)a user service
B)an attendant service
C)a management service
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36
With WATS calls,the ________ pays and pays ________ per minute than direct distance dialing.
A)caller, more
B)caller, less
C)called party, more
D)called party, less
A)caller, more
B)caller, less
C)called party, more
D)called party, less
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37
For PBXs,call detail reporting is ________.
A)a user service
B)an attendant service
C)a management service
A)a user service
B)an attendant service
C)a management service
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38
For PBXs,call transfer is ________.
A)a user service
B)an attendant service
C)a management service
A)a user service
B)an attendant service
C)a management service
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39
A ________ provides telephone service to customers.
A)PTT
B)Ministry of Telecommunications
C)both A and B
D)neither A nor B
A)PTT
B)Ministry of Telecommunications
C)both A and B
D)neither A nor B
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40
Which of the following regulates intrastate telephony in the United States?
A)the FCC
B)PUCs
C)neither A nor B
A)the FCC
B)PUCs
C)neither A nor B
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41
ICCs provide telephone transmission service ________.
A)within LATAs
B)between LATAs
C)between different countries
D)all of the above
A)within LATAs
B)between LATAs
C)between different countries
D)all of the above
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42
In the United States,which of the following is a carrier?
A)ILEC
B)LATA
C)both A and B
D)neither A nor B
A)ILEC
B)LATA
C)both A and B
D)neither A nor B
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43
Deregulation is lowest for ________.
A)customer premises equipment
B)local telephone service
C)long-distance telephone service
D)All of the above are deregulated to about the same degree.
A)customer premises equipment
B)local telephone service
C)long-distance telephone service
D)All of the above are deregulated to about the same degree.
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44
Deregulation is highest for ________.
A)customer premises equipment
B)local telephone service
C)long-distance telephone service
D)All of the above are deregulated to about the same degree.
A)customer premises equipment
B)local telephone service
C)long-distance telephone service
D)All of the above are deregulated to about the same degree.
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45
In the United States,IXCs provide telephone transmission service ________.
A)within a LATA
B)between LATs
C)between the United States and another country
D)all of the above
A)within a LATA
B)between LATs
C)between the United States and another country
D)all of the above
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46
In the United States,________ handle long-distance communication.
A)ILECs
B)IXCs
C)ICCs
D)PTTs
A)ILECs
B)IXCs
C)ICCs
D)PTTs
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47
Within a LATA,ILECs and CLECs interconnect at ________.
A)access points
B)NAPs
C)POPs
D)IXCs
A)access points
B)NAPs
C)POPs
D)IXCs
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