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H12-821_V1.0 · Question #941

As shown in the figure, router R has static routes to three network segments of Site A, Site B, and Site C respectively. The administrator needs to configure to import the routes of Site A and Site…

The correct answer is A. permit | permit | if-match. Option A is correct because the goal is to import (allow) routes from both Site A and Site B into the OSPF domain, which requires "permit" actions for both route-policy nodes, followed by "if-match" to define the specific matching criteria for each network. Option B is wrong…

IPv4 Routing Technologies

Question

As shown in the figure, router R has static routes to three network segments of Site A, Site B, and Site C respectively. The administrator needs to configure to import the routes of Site A and Site B into the OSPF Domain. Please set the commands for configuring RE are completed below.



Options

  • Apermit | permit | if-match
  • Bdeny | permit | if-match
  • Cpermit | deny | if-match
  • Ddeny | deny | if-match

How the community answered

(33 responses)
  • A
    79% (26)
  • B
    12% (4)
  • C
    3% (1)
  • D
    6% (2)

Explanation

Option A is correct because the goal is to import (allow) routes from both Site A and Site B into the OSPF domain, which requires "permit" actions for both route-policy nodes, followed by "if-match" to define the specific matching criteria for each network. Option B is wrong because using "deny" for the first node would block Site A's routes from being imported, which contradicts the requirement. Option C is wrong for the same reason but in reverse - "deny" on the second node would prevent Site B's routes from entering OSPF. Option D is wrong because denying both nodes means neither Site A nor Site B routes would be imported, achieving nothing useful.

Memory tip: Match the action keyword to the intent - if you want to INCLUDE a route, use "permit"; "deny" excludes it. Since both Site A and Site B must be imported, both nodes get "permit," and "if-match" always follows to specify what to match. If you accidentally write "deny" for a site you want to import, you are doing the opposite of what the question asks.

Topics

#OSPF redistribution#route filtering#route-maps#ACL matching

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