Question

You have decided to implement 802.1q. What does this standard do?

a) It implements STP.
b) It implements MAC filtering.
c) It forwards traffic based on priorities.
d) It implements VLAN trunking.

Answer 1

802.1q implements VLAN trunking, allowing for the implementation of Virtual LANs within a network.

Step-by-step explanation:

The correct answer is d) It implements VLAN trunking.

802.1q is a networking standard that allows for the implementation of Virtual LANs (VLANs) within a network. VLAN trunking enables the transmission of multiple VLANs over a single physical link. Each VLAN is identified by a unique VLAN tag, which is added to the Ethernet frame as it is transmitted.

For example, if you have multiple departments in a company and want to separate their traffic using VLANs, you can use 802.1q to assign different VLAN tags to each department. This allows for more efficient network management and improves security by isolating traffic between different VLANs.