Basic Questions

Question 1

Which of the following devices can segment collision domains? (Choose two)

A. Hubs
B. Repeaters
C. Bridge
D. Switch
E. Transceiver

Answer: C D

Explanation

A Layer 2 device can separate collision domains while a Layer 3 device can separate broadcast domains (and collision domains too). Bridge and switch operate in Layer 2 so they can segment collision domains.

Question 2

How many collision domains and broadcast domain in this topology? (Choose two)

A. One broadcast domain
B. Two broadcast domains
C. Three broadcast domains
D. Nine collision domains
E. Ten collision domains
F. Twelve collision domains

Answer: C E

Explanation

Remember these facts for Ethernet medium:
+ Each port on a switch creates a collision domain
+ Each port on a router creates a collision domain and broadcast domain
+ Layer 1 devices (like hub, repeater) do not create collision or broadcast domain

Therefore we can see there are 9 collision domains (four collision domains on each switch and one for the hub) and three broadcast domains for each interface of the router.