Which Cisco IOS switching feature can be used to achieve the task?

A network engineer must implement Ethernet links that are capable of transporting frames and IP traffic for different broadcast domains that are mutually isolated. Consider that this is a multivendor environment.

Which Cisco IOS switching feature can be used to achieve the task?
A . PPP encapsulation with a virtual template
B . Link Aggregation Protocol at the access layer
C . dot1q VLAN trunking
D . Inter-Switch Link

View Answer

Answer: C

Explanation:

Here the question asks for transporting "frames and IP traffic for different broadcast domains that are mutually isolated" which is basically a long way of saying VLANs so trunking is needed to carry VLAN information. There are 2 different methods for trunking, 802.1Q and ISL. Of these, only 802.1Q is supported by multiple vendors since ISL is a Cisco proprietary protocol.