This set of Data communication and Networking Multiple Choice Questions and Answers (MCQs) focuses on “Switching methods – Space division Switching ”.
1. A crossbar switch is a _______ switch.
- space-division
- time-division
- virtual-space
- time-space
2. A _______ switch usually has a higher efficiency than a _______ switch.
- single stage; multistage
- crossbar; dual
- single crossbar; multistage
- multistage; single crossbar
3. A crossbar switch with x inputs and y outputs requires _______ crosspoints
- xy
- x2
- y2
- x/y
4. A crossbar switch with 100 inputs and _______ outputs requires 20,000 crosspoints.
- 100
- 200
- 1000
- 2000
5. A multistage switch usually has _______ crosspoints than a corresponding single crossbar switch
- more
- less
- the same number of
- double the
6. In a multistage switch, there is usually _______ path(s) between input x and output y.
- one
- two
- multiple
- xy
7. A three-stage switch has _______.
- three switches per stage
- one switch for each of three stages
- three first stage switches
- multiple switches for each of three stages
8. Blocking is not a problem in a _______ switch.
- single-stage
- two-stage
- three-stage
- multistage
9. _______ occurs when there is no path available between an input and an output
- Switching
- Blocking
- Multiplexing
- Conditioning
10. The advantage of space-division switching is that it _______.
- is instantaneous
- is error free
- needs no flow control
- is free from blocking