Q4. Which of the following is true with respect to BGP routing?
A. Routing decisions are made based on number of hops.
B. Routing decisions are made based on metrics
C. Routing decisions are made based on Tics
D. Routing decisions are made based on network Policy.
Correct Answer: D
Routers running BGP in an AS use network Policy to choose the best path. Metrics are not used in BGP. Remember that Internet is made of autonomous systems (AS) that are connected together based on Policies specific to each AS. Also, AS numbers (ASN) are assigned by AINA and are unique over the Internet. In an internet (not big I) the ASNs can be assigned by the corporation itself that is implementing internet.
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