Given that ISP 1 and ISP 2 are Tier 2 providers, and that ISP 3 and ISP 4 are Tier 1 providers, what isthe most likely relationship between ISP 1 and the other ISPs?
A.
ISP 1 has a peering relationship with ISP 2 and ISP 4.
B.
ISP 1 has a peering relationship with ISP 2 and a transit relationship with ISP 3.
C.
ISP 1 has a peering relationship with ISP 2and ISP 3.
D.
ISP 1 has a transit relationship with ISP 2 and ISP 4.
E.
ISP 1 has a transit relationship with ISP 2 and a peering relationship with ISP 3.
Chosen Answer:
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