Question
Download Solution PDFWhich of the following statement/s is/are NOT CORRECT?
(A) OSPF is based on distance-vector routing protocol.
(B) Both link-state and distance-vector routing are based on the least cost goal.
(C) BGP4 is based on the path-vector algorithm.
(D) The three-node instability can be avoided using split horizon combined with poison reverse.
(E) RIP is based on link state algorithm.
Choose the correct answer from the options given below:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is (A), (D) and (E) Only
EXPLANATION:
- (A) OSPF is based on distance-vector routing protocol. -
- This statement is NOT CORRECT. OSPF (Open Shortest Path First) is based on a link-state routing protocol, not a distance-vector protocol.
- (B) Both link-state and distance-vector routing are based on the least cost goal. -
- This statement is CORRECT. Both of these protocols seek the path with the least overall "cost," where cost is a value that represents characteristics like bandwidth, delay, reliability, etc.
- (C) BGP4 is based on the path-vector algorithm. -
- This statement is CORRECT. The Border Gateway Protocol (BGP) version 4 is based on a path-vector algorithm rather than being purely distance-vector or link-state.
- (D) The three-node instability can be avoided using split horizon combined with poison reverse. -
- This statement is NOT CORRECT. Both split horizon and poison reverse are methods to prevent routing loops in distance-vector protocols; however, they might not always be able to prevent "count-to-infinity" problems, including certain cases of three-node instability.
- (E) RIP is based on link state algorithm. -
- This statement is NOT CORRECT. The Routing Information Protocol (RIP) is based on a distance-vector algorithm, not a link-state algorithm.
Last updated on Jun 11, 2025
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