This set of Data communication and Networking Multiple Choice Questions and Answers (MCQs) focuses on “Local Area Networks LAN – Ethernet ”.

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  • ANSI
  • FDDI
  • SDLC
  • HDLC
  • LAN; MAC
  • LLC; MAC
  • CSMA; LLC
  • LLC; PDU
  • CSMA
  • MAC
  • LLC
  • a and b

4. Project 802 specifies functions in the _______ of the OSI model

  • bottom layer
  • bottom 2 layers
  • bottom 3 layers
  • bottom 4 layers

5. IEEE 802.1 is concerned with _______ issues in LANs and MANs

  • error handling
  • networking
  • internetworking
  • flow control

6. The _______ sublayer, as specified in Project 802, is LAN specific and deals with contention issues

  • CSMA
  • MAC
  • LLC
  • a and c

7. Ethernet, Token Ring, and Token Bus are all different types of _______.

  • LANs
  • MANs
  • WANs
  • VANs

8. The _______ is the data unit at the LLC level

  • HDLC
  • PDU
  • SSAP
  • MAC

9. DSAP and SSAP are both _______ fields

  • control
  • user data
  • error control
  • address

10. The first bit of the _______ field in the PDU indicates the type of PDU (command or response).

  • DSAP
  • SSAP
  • HDLC
  • LLC

11. The first bit of the _______ field in the PDU indicates the destination type (individual or group).

  • DSAP
  • SSAP
  • HDLC
  • LLC

12. The PDU _______ field is identical to the HDLC _______ field.

  • control; information
  • control; control
  • control; PAD
  • control; FCS

13. A PDU frame can be _______.

  • an I-frame
  • an S-frame
  • a U-frame
  • any of the above

14. The flag, CRC, and station address fields are added to the PDU at the _______ layer

  • physical
  • LLC
  • MAC
  • network

15. Which of the following is an IEEE Project 802 standard?

  • Ethernet
  • Token Ring
  • Token Bus
  • all of the above

16. _______ signal is digital

  • A baseband
  • A broadband
  • An Ethernet
  • none of the above

17. _______ signal is analog

  • A baseband
  • A broadband
  • An Ethernet
  • none of the above

18. A 100Base-T Ethernet LAN has a data rate of _______ Mbps.

  • 1
  • 10
  • 100
  • 1000

19. A 10Base2 Ethernet LAN has a data rate of _______ Mbps.

  • 1
  • 2
  • 10
  • 100

20. A 10Base5 Ethernet LAN has a maximum cable length of _______ meters (assume no repeaters, bridges, or other such devices)

  • 5
  • 10
  • 100
  • 500
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