300-320 · Question #329
300-320 Question #329: Real Exam Question with Answer & Explanation
The correct answer is A: small routing table. Route summarization (also called route aggregation) offers two key advantages: (A) Smaller routing tables - instead of advertising many specific routes, a router advertises a single summary route, reducing memory consumption and lookup time on all routers in the network. (B) Redu
Question
Options
- Asmall routing table
- Bsmall upstream impact of a flapping interface
- Cfast convergence
- Dsecurity
- Eenhance view of the architecture
Explanation
Route summarization (also called route aggregation) offers two key advantages: (A) Smaller routing tables - instead of advertising many specific routes, a router advertises a single summary route, reducing memory consumption and lookup time on all routers in the network. (B) Reduced upstream impact of a flapping interface - when a specific subnet goes up and down (flaps), only routers within that summarized block learn about the change; upstream routers only see the stable summary route and are not flooded with repeated LSAs or routing updates. While summarization can have indirect effects on convergence, it does not inherently guarantee faster convergence (C), does not provide security (D), and does not enhance architectural visibility (E) - those are not primary benefits.
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