What is the purpose of a tag information base pertaining to switching?
A.
SNMP agents keep device status information in this database.
B.
MPLS-enabled devices use it to keep track of the different networks.
C.
This is necessary for VLAN configuration to take place.
D.
It allows switches to build network topologies to protect against DoS attacks.
Explanation:
When a packet reaches the switch, the switch will compare the
destination address with its tag information base, which is a list of all of the
subnets and their corresponding tag numbers. The switch appends the tag to the
packet and sends it to the next switch. All of the switches in between this first
switch and the destination host will just review this tag information to indicate
which route it needs to take instead of analyzing the full header.
I have the same idea. B
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VLAN standards like 802.1q and ISL uses tags to differentiate VLANs used in L2 switches.
The correct term regarding MLPS is Labels, not tags.
Correct answer would be: C
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i support C, TAG is related to vlan not MPLS, in MPLS its labels , who decides routing.
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tag & label both same. Exam tends to use synonym
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