Switching Methods – Public Switched Telephone Network (PSTN) MCQs - Data Communication and Networking

This set of Data communication and Networking Multiple Choice Questions and Answers (MCQs) focuses on “Switching methods – Public Switched Telephone Network (PSTN) ”.

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1. A message from device A consists of packet X and packet Y. In the virtual circuit approach to packet switching, packet Y's path _______ packet X's.

is the same as
is dependent on
is independent of
is always different from

2. In the PSTN hierarchy, the class one switching centers are known as the _______ offices

primary
toll
regional
end

3. In the PSTN hierarchy, the class two switching centers are known as the _______ offices

primary
sectional
regional
toll

4. In the PSTN hierarchy, the class three switching centers are known as the _______ offices

end
regional
sectional
primary

5. In the PSTN hierarchy, the class four switching centers are known as the _______ offices.

primary
toll
regional
sectional

6. In the PSTN hierarchy, the class five switching centers are known as the _______ offices

end
toll
primary
sectional

7. Subscriber telephones in the PSTN are connected through _______ to end offices

regional offices
local loops
repeaters
DSUs

8. Subscriber telephones in the PSTN are connected through local loops to _______ offices

end
toll
primary
regional

9. In the PSTN hierarchy, there are more _ offices than _ offices

primary; end
sectional; regional
regional; sectional
sectional; primary

10. At the top of the PSTN hierarchy are the _______ offices.

sectional
primary
regional
end

11. At the bottom of the PSTN hierarchy are the _______ offices.

sectional
primary
regional
end

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Data Communication and Networking – Switching Methods – Public Switched Telephone Network (PSTN) MCQs

1. A message from device A consists of packet X and packet Y. In the virtual circuit approach to packet switching, packet Y's path _______ packet X's.

2. In the PSTN hierarchy, the class one switching centers are known as the _______ offices

3. In the PSTN hierarchy, the class two switching centers are known as the _______ offices

4. In the PSTN hierarchy, the class three switching centers are known as the _______ offices

5. In the PSTN hierarchy, the class four switching centers are known as the _______ offices.

6. In the PSTN hierarchy, the class five switching centers are known as the _______ offices

7. Subscriber telephones in the PSTN are connected through _______ to end offices

8. Subscriber telephones in the PSTN are connected through local loops to _______ offices

9. In the PSTN hierarchy, there are more _ offices than _ offices

10. At the top of the PSTN hierarchy are the _______ offices.

11. At the bottom of the PSTN hierarchy are the _______ offices.

12. In touch-tone dialing, when the 9 key is pressed, _______ bursts of analog signals are sent to the end office.

13. If analog signals with frequencies of 770 Hz and 1209 Hz are received by the end office, a _______ has been dialeD

14. If analog signals with frequencies of 941 Hz and 1336 Hz are received by the end office, a _______ has been dialeD.

Data Communication and Networking – Switching Methods – Public Switched Telephone Network (PSTN) MCQs

1. A message from device A consists of packet X and packet Y. In the virtual circuit approach to packet switching, packet Y's path _______ packet X's.

2. In the PSTN hierarchy, the class one switching centers are known as the _______ offices

3. In the PSTN hierarchy, the class two switching centers are known as the _______ offices

4. In the PSTN hierarchy, the class three switching centers are known as the _______ offices

5. In the PSTN hierarchy, the class four switching centers are known as the _______ offices.

6. In the PSTN hierarchy, the class five switching centers are known as the _______ offices

7. Subscriber telephones in the PSTN are connected through _______ to end offices

8. Subscriber telephones in the PSTN are connected through local loops to _______ offices

9. In the PSTN hierarchy, there are more _______ offices than _______ offices

10. At the top of the PSTN hierarchy are the _______ offices.

11. At the bottom of the PSTN hierarchy are the _______ offices.

12. In touch-tone dialing, when the 9 key is pressed, _______ bursts of analog signals are sent to the end office.

13. If analog signals with frequencies of 770 Hz and 1209 Hz are received by the end office, a _______ has been dialeD

14. If analog signals with frequencies of 941 Hz and 1336 Hz are received by the end office, a _______ has been dialeD.

9. In the PSTN hierarchy, there are more _ offices than _ offices