Important Multiple Choice Questions on Ethernet

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

A)           5A:88:AA:18:55:F0

B)           5A:81:BA:81:AA:0F

C)           5A:18:5A:18:55:0F

D)           5A:11:55:18:AA:0F

 

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

A)           unicast

B)           multicast

C)           broadcast

D)           any of the above

 

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

A)           unicast

B)           multicast

C)           broadcast

D)           any of the above

 

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

A)           43:7B:6C:DE:10:00

B)           44:AA:C1:23:45:32

C)           46:56:21:1A:DE:F4

D)           48:32:21:21:4D:34

 

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

A)           B7:7B:6C:DE:10:00

B)           7B:AA:C1:23:45:32

C)           7C:56:21:1A:DE:F4

D)           83:32:21:21:4D:34

 

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

A)           Token Ring

B)           Token Bus

C)           Ethernet

D)           none of the above

 

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

A)           1-persistent

B)           p-persistent

C)           non-persistent

D)           none of the above

 

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

A)           data link

B)           physical

C)           network

D)           none of the above

 

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

A)           LLC

B)           MII

C)           MAC

D)           none of the above

 

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

A)           5-byte

B)           32-bit

C)           48-bit

D)           none of the above

 

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

A)           32

B)           80

C)           128

D)           none of the above

 

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

A)           1518

B)           1500

C)           1200

D)           none of the above

 

13. _________ uses thick coaxial cable.

A)           10Base5

B)           10Base2

C)           10Base-T

D)           10Base-F

 

14. __________ uses thin coaxial cable.

A)           10Base5

B)           10Base2

C)           10Base-T

D)           10Base-F

 

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

A)           10Base5

B)           10Base2

C)           10Base-T

D)           10Base-F

 

16. ________ uses fiber-optic cable.

A)           10Base5

B)           10Base2

C)           10Base-T

D)           10Base-F

 

17. Fast Ethernet has a data rate of ________Mbps.

A)           10

B)           100

C)           1000

D)           10,000

 

18. In _________, auto negotiation allows two devices to negotiate the mode or data rate of operation.

A)           Standard

B)           Fast Ethernet

C)           Gigabit Ethernet

D)           Ten-Gigabit Ethernet

 

19. __________ uses two pairs of twisted-pair cable.

A)           100Base-TX

B)           100Base-FX

C)           100Base-T4

D)           none of the above

 

20. _________ uses two fiber-optic cables.

A)           100Base-TX

B)           100Base-FX

C)           100Base-T4

D)           none of the above

 

21. _________ uses four pairs of voice-grade, or higher, twisted-pair cable.

A)           100Base-TX

B)           100Base-FX

C)           100Base-T4

D)           none of the above

 

22. Gigabit Ethernet has a data rate of ________Mbps.

A)           10

B)           100

C)           1000

D)           10,000

 

23. Gigabit Ethernet access methods include _______ mode.

A)           half-duplex

B)           full-duplex

C)           both (a) and (b)

D)           neither (a) nor (b)

 

24. __________ uses two optical fibers and a short-wave laser source,

A)           1000Base-SX

B)           1000Base-LX

C)           1000Base-T

D)           none of the above

 

25. __________uses two optical fibers and a long-wave laser source.

A)           1000Base-SX

B)           1000Base-LX

C)           1000Base-T

D)           none of the above

 

26. __________ uses four twisted pairs.

A)           1000Base-SX

B)           1000Base-LX

C)           1000Base-T

D)           none of the above

 

27. ________ uses short-wave 850-nm multimode fiber.

A)           10GBase-S

B)           10GBase-L

C)           10GBase-E

D)           none of the above

 

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

A)           10GBase-S

B)           10GBase-L

C)           10GBase-E

D)           none of the above

 

29. ________ uses 1550-mm single mode fiber.

A)           10GBase-S

B)           10GBase-L

C)           10GBase-E

D)           none of the above

 

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

A)           unicast

B)           multicast

C)           broadcast

D)           none of the above

 

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

A)           unicast

B)           multicast

C)           broadcast

D)           none of the above

 

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

A)           unicast

B)           multicast

C)           broadcast

D)           none of the above

 

33. ______defines a protocol data unit (PDU) that is somewhat similar to that of HDLC.

A)           MAC

B)           LLC

C)           LLU

D)           none of the above

 

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

A)           MAC

B)           LLC

C)           LLU

D)           none of the above

 

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

A)           CRC

B)           preamble

C)           address

D)           none of the above

 

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

A)           CRC

B)           preamble

C)           address

D)           none of the above

 

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

A)           NRZ

B)           AMI

C)           Manchester

D)           differential Manchester

 

38. 100Base-TX uses _________ block coding and ________ line coding.

A)           4B/5B; NRZ

B)           8B/10B; NRZ

C)           4B/5B; MLT-3

D)           8B/10B; NRZ

 

39. 100Base-FX uses _________ block coding and ________ line coding.

A)           4B/5B; NRZ-I

B)           8B/10B; NRZ

C)           4B/5B; MLT-3

D)           8B/10B; NRZ

 

40. 100Base-T4 uses ________ line coding.

A)           NRZ

B)           8B6T

C)           MLT-3

D)           Manchester

 

41. 1000Base-SX, 1000Base-LX, and 1000Base-CX use _________ block coding and ________ line coding.

A)           4B/5B; NRZ

B)           8B/10B; NRZ

C)           4B/5B; MLT-3

D)           8B/10B; NRZ

 

42. 1000Base-T uses ________ line coding.

A)           4D-PAM5

B)           8B6T

C)           MLT-3

D)           Manchester

 

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