QUESTION 8:
The Certkiller network is displayed in the following diagram:

Based on the diagram shown above, which of the devices shown can transmit
simultaneously without causing collisions.
A. All hosts
B. Only hosts attached to the switch
C. All hosts attached to the hub and one host attached to the switch
D. All hosts attached to the switch and one host attached to the hub

Answer: B
Explanation:
As we know switch is the device which avoids collisions. When two computers
communicate through a switch they make their own collision domain. So, there is no
chance of collisions. Whenever a hub is included, it supports on half duplex
communication and works on the phenomena of CSMA/CD so, there is always a chance
of collision.