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JN0-662 · Question #21
JN0-662 Question #21: Real Exam Question with Answer & Explanation
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Question
You want to use IS-IS on a GRE interface where the underlying Layer 3 MTU is 1500. Which statement is correct in this scenario?
Options
- AIS-IS can be used because every IS-IS interface must be capable of transmitting packets at least
- BIS IS can be used, but the networking device directly attached to the circuit must be capable of
- CIS-IS cannot be used, but the router can enable a GRE key that serves the same function as IS-
- DIS-IS cannot be used because the IS-IS hello is not allowed to be fragmented and has the DF bit
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