The 802 Standards

Question 1

When did IEEE begin to define LAN standards?

Answer 1

Late 1970s

Question 2

Who decided more detail was needed at the Data Link Layer? When?

Answer 2

IEEE 802; 1980s

Question 3

Match:

1. 802.1
2. 802.2
3. 802.3

A. Logical Link Control
B. Internetworking including bridging and virtually bridged LANs
C. CSMA/CD LAN

Answer 3

1. B
2. A
3. C

Question 4

Is Ethernet baseband or broadband?

Answer 4

Baseband

Question 5

What is CSMA/CD?

Answer 5

Carrier-Sense Multiple Access with Collision Detection

Question 6

What does CSMA/CD do?

Answer 6

Regulates traffic via access control

Question 7

What 4 types of baseband cables are associated with Ethernet?

Answer 7

Thicknet, Thinnet, UTP, fiber optic

Question 8

T/F: star configurations are typically avoided in Ethernet configurations.

Answer 8

F. Star is usually used with hubs and cat 4/5 twisted pair cabling.

Question 9

In CDMA/CD environments, how do workstations decide when to transmit?

Answer 9

Listen in on transmission medium until no signal is detected, then transmit. If more than one signal, attempt to transmit after a preset delay that differs for each workstation.

Question 10

What is IEEE?

Answer 10

Institute of Electrical and Electronic Engineers

US-based organization

Develops data communication standards