- Principle of Circuit Switching is…
- A. A dedicated physical path Between Sender and Receiver
- B. Transfer Data with Packet form
- C. Resource allocation after three way hand shaking
- D. Working on Data Link Layer
- None of the above
Ans- A dedicated physical path Between Sender and Receiver
Points to remember before going to examination hall
Circuit Switching-:
- It is done on Physical Layer
- In Circuit Switching before sending any data to receiver a dedicated physical path has been establish.
- In first step connection will be establish with sending one starting bit data. This data is responsible for making a connection between sender and receiver.
- Addressing is involve in connection establishment phase.
- All the resources will be allocated at the time of connection establishment phase.
- After sending first bit all the path is dedicated and data is moving like a pipeline with following that first bit in data transfer phase. For this data is transfer very fast in circuit switching.
- This dedicated pipeline is responsible to send data and remains open until send all data to receiver.
- In Circuit switching data is flow with a physical path like a dedicated single path.
- After sending all data to receiver connection will be terminated in last phase.
- It is generally used in voice communication.
- Total time taken for packet to transfer from sender to receiver in Circuit switching
- Total time= Connection establishment time(It is given in Question)+Data Transfer(TT+TP)+ Connection Termination time(It is given in Question).
- Efficiency in Circuit Switching is very low because of resource allocation in advance.
2. For voice communication best suited switching is…
- A. Packet Switching
- B. Datagram Switching
- C. Circuit Switching
- D. Message switching
- None of the above
Ans- C. Circuit Switching
3. Use of Circuit switching in…
- A. Time Division Multiplexing
- B. Switching in Space Division
- C. Time domain Switches
- D. All of the above
- None of the above
Ans- D. All of the above
4. In which switching Data rate are same in both sender and receiver side…
- A. Packet Switching
- B. Datagram Switching
- C. Circuit Switching
- D. Message switching
- None of the above
Ans- C. Circuit Switching
5. TDM is best suited in
- A. Packet Switching
- B. Datagram Switching
- C. Circuit Switching
- D. Message switching
- None of the above
Ans- C. Circuit Switching
6. In which Switching point to point communication is placed between sender and receiver…
- A. Circuit Switching
- B. Datagram Switching
- C. Packet Switching
- D. Message switching
- None of the above
Ans- A. Circuit Switching
7. In which Switching POTS(Plain-old-Telephone-service)network works…
- A. Circuit Switching
- B. Datagram Switching
- C. Packet Switching
- D. Message switching
- None of the above
Ans- A. Circuit Switching
8. In which Switching data is never lost and reach safely on receiver side
- A. Circuit Switching
- B. Datagram Switching
- C. Packet Switching
- D. Message switching
- None of the above
Ans- A. Circuit Switching
9. In which Switching header overhead problem not occur…
- A. Circuit Switching
- B. Datagram Switching
- C. Packet Switching
- D. Message switching
- None of the above
Ans- A. Circuit Switching
10. In which Switching data is reaches to receiver in order
- A. Circuit Switching
- B. Datagram Switching
- C. Packet Switching
- D. Message switching
- None of the above
Ans- A. Circuit Switching
11. Before sending any data channel is Block In which Switching
- A. Circuit Switching
- B. Datagram Switching
- C. Packet Switching
- D. Message switching
- None of the above
Ans- A. Circuit Switching
12. Less efficient Switching techniques…
- A. Circuit Switching
- B. Datagram Switching
- C. Packet Switching
- D. Message switching
- None of the above
Ans- A. Circuit Switching
Key point:_Just because of resource allocation in advance Circuit Switching is less efficient.
13. Most Expensive Switching techniques…
- A. Circuit Switching
- B. Datagram Switching
- C. Packet Switching
- D. Message switching
- None of the above
Ans- A. Circuit Switching
14. In which switching techniques routing decisions cannot be change…
- A. Circuit Switching
- B. Datagram Switching
- C. Packet Switching
- D. Message switching
- None of the above
Ans- A. Circuit Switching
15. In which Switching Packet is never lost and reach safely on receiver side
- A. Circuit Switching
- B. Datagram Switching
- C. Packet Switching
- D. Message switching
- None of the above
Ans- A. Circuit Switching
Problem solving in Circuit Switching/Numerical on Circuit Switching
- Assume that in a network 24 slot TDM network has data rate of 1.536 Mbps and host A taking 500 msec to establish connection with host B. What amount of time it will take to send 512KByte from host A to B.
Solution-: This question is belongs to Circuit Switching. In Circuit Switching Total time taken to send a data from sender to receiver is
Total Time=Time taken to connection establishment + Data transfer time + connection Termination time
Here in this question we have given connection establishment time for Host A which is 500msec
we have to calculate transmission delay
In above question connection termination time is not given so we assume it 0.
given that
Connection establishment time=500msec
bandwidth for 24 link slot =1.536 Mbps
bandwidth for each link must be=1.536*106bps / 24=64kbps for each link
Total file size=512KByte
Transmission delay=total data size / bandwidth
=512*103*8 / 64 * 103
=65536 msec
Total time taken from sending data from Host A to B is = connection establish time + Transmission delay
=500 + 65536 = 66036 msec
=66.036 msec
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