CCNP Practice Question: Which three statements about EIGRP route…

Answer analysis

Option-by-option breakdown

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

• ✓

  Manual summarization is configured using the 'ip summary-address eigrp <as> <prefix> <mask>' command on an interface.

  Why this is correct

  Correct because this is the standard command to configure a manual summary route on a specific interface.

• ✗

  Automatic summarization is enabled by default in EIGRP for IPv4.

  Why it's wrong here

  Incorrect because automatic summarization is disabled by default in Cisco IOS versions 15.0 and later.

• ✓

  A manual summary route is advertised with a metric equal to the best metric among the component routes.

  Why this is correct

  Correct because EIGRP uses the best metric of the included more specific routes for the summary.

• ✗

  Summary routes are always preferred over more specific routes in the routing table.

  Why it's wrong here

  Incorrect because more specific routes (longest prefix match) are always preferred over summary routes.

• ✓

  EIGRP will install a discard route (null0) for the summary prefix to prevent routing loops.

  Why this is correct

  Correct because EIGRP automatically adds a route to Null0 for the summary prefix to avoid black holes if a more specific route is missing.