What are three components of the tag portion of an 802.1Q-tagged Ethernet frame? (Choose
three.)
A.
Tag Protocol Identifier
B.
maximum transmission unit
C.
canonical format indicator
D.
unique VLAN identifier
E.
frame check sequence
Explanation:
http://www.h3c.com/portal/res/200706/01/20070601_108906_image002_201175_57_0.gif
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https://ciscohite.wordpress.com/2013/05/14/difference-between-isl-802-1q/
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very useful. thanks
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