Question

question 4
which duplex communication method is used in wlans?
full - duplex
half - duplex
simplex
question 5
which media access control method is used in legacy ethernet lans?
carrier sense multiple access/collision annoyance
carrier sense multiple access/collision avoidance
carrier sense multiple access/collision destruction
carrier sense multiple access/collision detection

Explanation:

For Question 4, WLANs use half - duplex communication where devices can't transmit and receive simultaneously. For Question 5, legacy Ethernet LANs use Carrier sense multiple access/collision detection (CSMA/CD) as the media access control method to handle shared media access and detect collisions.

Answer:

Question 4: B. Half - duplex
Question 5: D. Carrier sense multiple access/collision detection