GATE CS 2025 Set 2 — Question 17
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Computer Networks → Network Layer: Routing → Distance Vector Routing
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Question
Consider the routing protocols given in List I and the names given in List II:
For matching of items in List I with those in List II, which ONE of the following options is CORRECT?
| List I | List II |
|---|---|
| (i) Distance vector routing | (a) Bellman-Ford |
| (ii) Link state routing | (b) Dijkstra |
Correct answer
(A) (i) – (a) and (ii) – (b)
Solution
Distance Vector Routing protocols (e.g., RIP) typically use the Bellman-Ford algorithm (or a variant like split horizon with poison reverse) to determine the shortest path.Link State Routing protocols (e.g., OSPF, IS-IS) typically use Dijkstra's algorithm (Shortest Path First) to compute the routing table.Therefore, the correct matching is:
(i) Distance vector routing (a) Bellman-Ford
(ii) Link state routing (b) Dijkstra
(i) Distance vector routing (a) Bellman-Ford
(ii) Link state routing (b) Dijkstra
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