This set of Data communication and Networking Multiple Choice Questions and Answers (MCQs) focuses on “Local Area Networks LAN – Ethernet ”.
1. The data link control portion of most LAN protocols in use today is based on _______.
- ANSI
- FDDI
- SDLC
- HDLC
2. In Project 802, the data link layer consists of the _______ sublayer and the _______ sublayer
- LAN; MAC
- LLC; MAC
- CSMA; LLC
- LLC; PDU
3. In a LAN defined by Project 802, the _______ sublayer of the data link layer is non-architecture specific
- 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