Deck 14: Module C More on Telecommunications

Question 1

Satellite ________ operate on a point-to-point basis.

A)uplinks
B)downlinks
C)both A and B
D)neither A nor B

Answer 1

A

Question 2

In TDM,time is first divided into brief periods called ________.

A)packets
B)frames
C)slots
D)cells

Answer 2

B

Question 3

PSTN signaling in the United States uses ________.

A)SS7
B)ATM
C)TDM
D)SIP

Answer 3

A

Question 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

Question 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

Question 6

In TDM,there are more frames than slots.

Question 7

Which of the following has an altitude of a few thousand miles?

A)GEOs
B)LEOs
C)MEOs
D)none of the above

Question 8

Which of the following is packet-switched?

A)ATM
B)TDM
C)both A and B
D)neither A nor B

Question 9

Plenum wiring is needed for ________.

A)heavy traffic loads
B)safety
C)both A and B
D)neither A nor B

Question 10

Which of the following is good for mobile stations?

A)GEOs
B)LEOs
C)both A and B
D)neither A nor B

Question 11

A ring topology is attractive because it brings ________.

A)higher speed
B)lower cost
C)greater reliability
D)all of the above

Question 12

Incompatibilities between signaling systems in the United States and Europe cause serious problems.

Question 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

Question 14

In TDM,a voice conversation gets the same ________ in each ________.

A)frame, packet
B)packet, frame
C)frame, slot
D)slot, frame

Question 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

Question 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

Question 17

SONET/SDH uses a ________ topology.

A)point-to-point
B)hierarchy
C)mesh
D)ring

Question 18

Cross-connect devices are found in ________.

A)PBXs
B)equipment rooms
C)telecommunications closets
D)switches

Question 19

ATM provides quality-of-service for voice.

Question 20

________ is/are widely used in Europe for PSTN signaling.

A)C7
B)SS7
C)Both A and B
D)Neither A nor B

Question 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

Question 22

Message units are a time and distance pricing method that can be used to charge for local calls.

Question 23

Call restriction refers to a switch's ability to control incoming calls to a station.

Question 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

Question 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

Question 26

PTTs were found in ________.

A)Europe
B)the United States
C)both A and B
D)neither A nor B

Question 27

For PBXs,nighttime calling is ________.

A)a user service
B)an attendant service
C)a management service

Question 28

For PBXs,camp-on is ________.

A)a user service
B)an attendant service
C)a management service

Question 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

Question 30

Even for local calls,many telephone companies charge by the duration of the call.

Question 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.

Question 32

Local calls are always billed on a flat rate basis where the customer pays a monthly fee for unlimited local calling.

Question 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

Question 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

Question 35

For PBXs,call forwarding is ________.

A)a user service
B)an attendant service
C)a management service

Question 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

Question 37

For PBXs,call detail reporting is ________.

A)a user service
B)an attendant service
C)a management service

Question 38

For PBXs,call transfer is ________.

A)a user service
B)an attendant service
C)a management service

Question 39

A ________ provides telephone service to customers.

A)PTT
B)Ministry of Telecommunications
C)both A and B
D)neither A nor B

Question 40

Which of the following regulates intrastate telephony in the United States?

A)the FCC
B)PUCs
C)neither A nor B

Question 41

ICCs provide telephone transmission service ________.

A)within LATAs
B)between LATAs
C)between different countries
D)all of the above

Question 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

Question 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.

Question 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.

Question 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

Question 46

In the United States,________ handle long-distance communication.

A)ILECs
B)IXCs
C)ICCs
D)PTTs

Question 47

Within a LATA,ILECs and CLECs interconnect at ________.

A)access points
B)NAPs
C)POPs
D)IXCs