| Exam 300-115 | Question id=1374 | Layer 2 Technologies |
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 |
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.