Deck 14: Module C More on Telecommunications

Question 1

A ring topology is attractive because it brings ________.

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

Answer 1

C

Question 2

Which of the following is packet-switched?

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

Answer 2

A

Question 3

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

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

Answer 3

A

Question 4

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 5

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

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

Question 6

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 7

Which of the following have an altitude of a few thousand kilometers (a few thousand miles)?

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

Question 8

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

A)C7
B)SS7
C)both A and B
D)neither A nor B

Question 9

PSTN signaling in the United States uses ________.

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

Question 10

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

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

Question 11

For PBXs,call transfer is ________.

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

Question 12

For PBXs,camp-on is ________.

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

Question 13

SONET/SDH uses a ________ topology.

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

Question 14

Cross-connect devices are found in ________.

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

Question 15

In data wiring,there need 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 16

For PBXs,call forwarding is ________.

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

Question 17

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 18

Plenum wiring is needed for ________.

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

Question 19

Which of the following is good for mobile stations?

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

Question 20

In telephone wiring,there need 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 21

For PBXs,call detail reporting is ________.

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

Question 22

Deregulation is the 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 23

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 24

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 25

For PBXs,nighttime calling is ________.

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

Question 26

Which of the following provide(s)overall regulations for the U.S.carriers in the United States?

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

Question 27

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

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

Question 28

Within a LATA,ILECs and CLECs interconnect at ________.

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

Question 29

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 30

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 31

ICCs provide telephone transmission service ________.

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

Question 32

Deregulation is the least 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 33

A ________ provides telephone service to customers.

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

Question 34

PTTs were found in ________.

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

Question 35

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 36

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 37

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 38

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 39

In the United States,IXCs provide telephone transmission service ________.

A)within a LATA
B)between LATAs
C)between the United States and another country
D)all of the above

Question 40

Which of the following regulates telephony within individual states in the United States?

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

Question 41

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

Question 42

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

Question 43

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

Question 44

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

Question 45

In TDM,there are usually more frames than slots.

Question 46

ATM provides quality-of-service for voice.

Question 47

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