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300-410 Practice Question: Best describes the behavior of BGP when an…

Which of the following best describes the behavior of BGP when an 'aggregate-address' command is used without the 'summary-only' keyword?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

The aggregate route is advertised, and all more specific routes are also advertised.

Without the summary-only keyword, BGP advertises both the aggregate route and the more specific routes that are in the BGP table.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✓

    The aggregate route is advertised, and all more specific routes are also advertised.

    Why this is correct

    Correct. Without summary-only, both aggregate and specifics are advertised.

  • ✗

    Only the aggregate route is advertised.

    Why it's wrong here

    Incorrect. That would require the summary-only keyword.

  • ✗

    The aggregate route is not advertised unless a network command exists for it.

    Why it's wrong here

    Incorrect. The aggregate-address command itself generates the aggregate.

  • ✗

    The more specific routes are withdrawn from the BGP table.

    Why it's wrong here

    Incorrect. They remain in the table and are advertised.

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Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

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