Question 1

For a local area network (LAN), the physical topology must always be the same as the logical topology.

True

False

10 points

Question 2

Select the correct statement(s) regarding peer-to-peer (P2P) networks.

		a. computers on P2P networks have a centralized location for all shared data
		b. there is a possibility that duplicate data files will exist on a P2P network
		c. P2P networks always use centralized authentication and access methods
		d. all are correct statements

10 points

Question 3

Select the correct statement(s) regarding decentralized (distributed) access control on a LAN.

		a. no centralized access process exists, and therefore each connected station has the responsibility for controlling its access
		b. data collisions are possible, therefore mechanisms such as CDMA/CD are required
		c. when a data collision occurs, the nearest station detecting the collision transmits a jamming signal
		d. all of the above are correct

10 points

Question 4

A shared IEEE 802.3 Ethernet LAN requires the CSMA/CD protocol to help avoid data collisions; however, data collision can still occur.

True

False

10 points

Question 5

An IEEE 802.11 wireless LAN (WLAN) does not share a common medium and therefore data collisions are not possible. This is the reason why CSMA/CD is not used on WLANs.

True

False