Wired LANs: Ethernet MCQs - Data Communication and Networking

In this section of Data Communication and Networking – Wired LANs: Ethernet MCQ (Multiple Choice) Based Questions and Answers.It cover the below lists of topics, All the Multiple Choice Questions and Answers (MCQs) have been compiled from the book of Data Communication and Networking by The well known author behrouz forouzan.

This Section covers below lists of topics.

Medium access methods MCQs.
Carrier sense multiple-access (CSMA) method MCQs.
Carrier sense multiple access with collision detection (CSMA/CD) MCQs.
Carrier sense multiple access with collision avoidance (CSMA/CA) MCQs.
Reservation, polling, and token passing controlled-access methods MCQs.
FDMA, TDMA, and CDMA channelization methods MCQs

PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE

1. The minimum frame length for 10-Mbps Ethernet is _______bytes.

32
80
128
none of the above

2. The maximum frame length for 10-Mbps Ethernet is ________ bytes.

1518
1500
1200
none of the above

3. _________ uses thick coaxial cable

10Base5
10Base2
10Base-T
10Base-F

4. __________ uses thin coaxial cable

10Base5
10Base2
10Base-T
10Base-F

5. _________ uses four twisted-pair cables that connect each station to a common hub.

10Base5
10Base2
10Base-T
10Base-F

6. _______ uses fiber-optic cable

10Base5
10Base2
10Base-T
10Base-F

7. Fast Ethernet has a data rate of ________Mbps.

10
100
1000
10000

8. In _________, autonegotiation allows two devices to negotiate the mode or data rate of operation.

Standard
Fast Ethernet
Gigabit Ethernet
Ten-Gigabit Ethernet

9. _________ uses two pairs of twisted-pair cable.

100Base-TX
100Base-FX
100Base-T4
none of the above

10. ________ uses two fiber-optic cables.

100Base-TX
100Base-FX
100Base-T4
none of the above

11. ________ uses four pairs of voice-grade, or higher, twisted-pair cable.

100Base-TX
100Base-FX
100Base-T4
none of the above

12. Gigabit Ethernet has a data rate of ________Mbps

10
100
1000
10000

13. Gigabit Ethernet access methods include _______ mode.

half-duplex
full-duplex
both (a) and (b)
neither (a) nor (b)

14. _________ uses two optical fibers and a short-wave laser source,

1000Base-SX
1000Base-LX
1000Base-T
none of the above

15. _________uses two optical fibers and a long-wave laser source

1000Base-SX
1000Base-LX
1000Base-T
none of the above

16. __________ uses four twisted pairs.

1000Base-SX
1000Base-LX
1000Base-T
none of the above

17. _______ uses short-wave 850-nm multimode fiber

10GBase-S
10GBase-L
10GBase-E
none of the above

18. ________uses long-wave 1310-nm single mode fiber

10GBase-S
10GBase-L
10GBase-E
none of the above

19. ________ uses 1550-mm single mode fiber

10GBase-S
10GBase-L
10GBase-E
none of the above

20. In Ethernet addressing, if the least significant bit of the first byte is 0, the address is _________

unicast
multicast
broadcast
none of the above

21. In Ethernet addressing, if the least significant bit of the first byte is 1, the address is _________

unicast
multicast
broadcast
none of the above

22. In Ethernet addressing, if all the bits are 1s, the address is _________

unicast
multicast
broadcast
none of the above

23. _____defines a protocol data unit (PDU) that is somewhat similar to that of HDLC

MAC
LLC
LLU
none of the above

24. The purpose of the _______ is to provide flow and error control for the upper-layer protocols that actually demand these services

MAC
LLC
LLU
none of the above

25. In the Ethernet, the _______field is actually added at the physical layer and is not (formally) part of the frame.

CRC
preamble
address
none of the above

26. In the Ethernet frame, the _______ field contains error detection information

CRC
preamble
address
none of the above

27. Standard Ethernet (10-Mbps) uses _______ encoding

NRZ
AMI
Manchester
differential Manchester

28. 100Base-TX uses _ block coding and line coding.

4B/5B; NRZ
8B/10B; NRZ
4B/5B; MLT-3
8B/10B; NRZ

29. 100Base-FX uses _ block coding and line coding

4B/5B; NRZ-I
8B/10B; NRZ
4B/5B; MLT-3
8B/10B; NRZ

30. 100Base-T4 uses ________ line coding

NRZ
8B6T
MLT-3
Manchester

31. What is the hexadecimal equivalent of the Ethernet address 01011010 00010001 01010101 00011000 10101010 00001111?

5A:88:AA:18:55:F0
5A:81:BA:81:AA:0F
5A:11:55:18:AA:0F
5A:18:5A:18:55:0F

32. If an Ethernet destination address is 07:01:02:03:04:05, then this is a ______ address.

unicast
multicast
broadcast
any of the above

33. If an Ethernet destination address is 08:07:06:05:44:33, then this is a ______ address.

unicast
multicast
broadcast
any of the above

34. Which of the following could not be an Ethernet unicast destination?

43:7B:6C:DE:10:00
44:AA:C1:23:45:32
46:56:21:1A:DE:F4
48:32:21:21:4D:34

35. Which of the following could not be an Ethernet multicast destination?

B7:7B:6C:DE:10:00
7B:AA:C1:23:45:32
7C:56:21:1A:DE:F4
83:32:21:21:4D:34

36. _______ is the most widely used local area network protocol.

Token Ring
Token Bus
Ethernet
none of the above

37. The IEEE 802.3 Standard defines _________ CSMA/CD as the access method for first-generation 10-Mbps Ethernet.

1-persistent
p-persistent
non-persistent
none of the above

38. The _______ layer of Ethernet consists of the LLC sublayer and the MAC sublayer.

data link
physical
network
none of the above

39. The _____ sublayer is responsible for the operation of the CSMA/CD access method and framing.

LLC
MII
MAC
none of the above

40. Each station on an Ethernet network has a unique _______ address imprinted on its network interface card (NIC).

5-byte
32-bit
48-bit
none of the above

Data Communication and Networking – Wired LANs: Ethernet MCQs