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  • Post last modified:June 12, 2024

An OSPF router has three directly connected networks; 10.0.0.0/16, 10.1.0.0/16, and 10.2.0.0/16. Which OSPF network command would advertise only the 10.1.0.0 network to neighbors?

  • router(config-router)# network 10.1.0.0 0.0.255.255 area 0
  • router(config-router)# network 10.1.0.0 0.0.15.255 area 0
  • router(config-router)# network 10.1.0.0 255.255.255.0 area 0
  • router(config-router)# network 10.1.0.0 0.0.0.0 area 0
Explanation & Hint:

The OSPF network command requires the use of a wildcard mask, which is the inverse of the subnet mask. For the network 10.1.0.0/16, the subnet mask is 255.255.0.0. The inverse of this mask is 0.0.255.255.

Therefore, the correct command to advertise only the 10.1.0.0/16 network to OSPF neighbors is:

router(config-router)# network 10.1.0.0 0.0.255.255 area 0

This command uses the correct wildcard mask corresponding to the /16 subnet mask and will match only the 10.1.0.0 network.

For more Questions and Answers:

CCNA 3 v7 – ENSA v7.02 Final Exam Answers Full 100%

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