The answer to the ninth question has been added to the post.

Tenth question:

What are ISL and 802.1q, and how do they differ?

Please post answers in the comments (without Googling)!

Highlight for answer:

These are both VLAN trunking protocols. ISL is a Cisco proprietary protocol, while 802.1q is an IEEE standard. ISL encapsulates the entire frame and has no “Native VLAN”.



Colby Glass has been in IT since 2002. He is currently a Systems Engineer (presales) with a Cisco Gold partner and holds the CCNP R/S, CCNP DC, CCDP, CCIP, JNCIA-ER.

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