Nokia
4A0-C01 · Question #256
How does an IS-IS router acknowledge the receipt of an IS-IS LSP on a point-to-point link?
The correct answer is C. They are explicitly acknowledged by sending a PSNP to the sender identifying the LSP. See the full explanation below for the reasoning.
Question
How does an IS-IS router acknowledge the receipt of an IS-IS LSP on a point-to-point link?
Options
- AThey are explicitly acknowledged by sending a CSNP to the sender identifying the LSP.
- BThey are implicitly acknowledged as a part of the link-state database synchronization and maintenance procedures.
- CThey are explicitly acknowledged by sending a PSNP to the sender identifying the LSP.
- DThey are implicitly acknowledged by the DIS multicast of CSNPs.
How the community answered
(20 responses)- A15% (3)
- B5% (1)
- C75% (15)
- D5% (1)
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