This set of Data communication and Networking Multiple Choice Questions and Answers (MCQs) focuses on “Local Area Networks LAN – FDDI ”.
1. An FDDI LAN can use _______ as a medium.
- any metallic cable
- copper cable
- fiber optic cable
- b or c
D. b or c
2. Token Ring and FDDI both use _______ as an access method.
- CSMA
- CSMA/CD
- token passing
- HDLC
C. token passing
3. An FDDI synchronous data frame means that _______.
- the information is real-time
- the information is not real-time
- the information comes from the SDLC protocol
- the information is time-division multiplexed
A. the information is real-time
4. Each station on an FDDI ring has a _______ register while there is just one _______ register for the entire FDDI ring
- SA; TTRT
- TTRT; SA
- AMT; SA
- SA; TRT
A. SA; TTRT
5. The _______ register holds a value equal to twice the _______.
- AMT; TTRT
- TTRT; AMT
- AMT; SA
- TTRT; SA
A. AMT; TTRT
6. If a token traverses the FDDI ring in a time greater than the _______, the ring gets reinitialized
- SA
- TTRT
- TRT
- AMT
D. AMT
7. The _______ is the average time required for a token to circulate the ring exactly once
- SA
- TTRT
- AMT
- TAM
B. TTRT
8. The sum of the _______ should be a value close to the TTRT.
- SAs
- TTRTs
- AMTs
- TAMs
A. SAs
9. The _______ is a measure of an actual cycle time while the _______ is an average cycle value set at ring initialization
- TRT; THT
- THT; TRT
- THT; TTRT
- TRT; TTRT
D. TRT; TTRT
10. The THT is a function of the _______ and _______.
- AMT; TTRT
- TTRT; TRT
- SA; TTRT
- AMT; SA
B. TTRT; TRT
11. The _______ is always 0 when the token arrives at an FDDI station
- TTRT
- TRT
- THT
- SA
B. TRT
12. An FDDI station sends asynchronous data as long as the _______ value is positive
- TTRT
- TRT
- THT
- SA
C. THT
13. When the token leaves an FDDI station, the TRT value is _______.
- 0
- some positive value
- some negative value
- greater than TTRT but less than SA
A. 0
14. FDDI specifies _______ encoding prior to NRZ-I encoding.
- 4B/5T
- 3B/4B
- 5B/4B
- 4B/5B
D. 4B/5B
15. Which of the following is not a protocol in the FDDI standard?
- PMD
- PHY
- MAC
- HDLC
D. HDLC
16. Which type of FDDI node has two MICs?
- DAS
- SAS
- DAC
- a and c
A. DAS
17. Which type of FDDI node has one MIC?
- DAS
- SAS
- DAC
- a and c
B. SAS
18. How many MICs are need for a DAC connecting 3 workstations to an FDDI ring?
- 2
- 3
- 4
- 5
D. 5
19. In FDDI, when all synchronous data have been sent and the THT value is still positive, _______.
- no asynchronous data can be sent
- asynchronous data can be sent
- all asynchronous data have been sent
- any of the above
B. asynchronous data can be sent
20. One MAU can support _______ stations.
- 5
- 8
- 32
- any number of
B. 8
21. An MAU is a device used in _______.
- Ethernet
- Token Ring
- FDDI
- all of the above
B. Token Ring
22. An SAS is a device used in _______.
- Ethernet
- Token Ring
- FDDI
- all of the above
C. FDDI