Which router command will configure an interface with the IP address 10.10.80.1/19?

Which router command will configure an interface with the IP address 10.10.80.1/19?

Which router command will configure an interface with the IP address 10.10.80.1/19?

A.
router(config-if)# ip address 10.10.80.1/19

B.
router(config-if)# ip address 10.10.80.1 255.255.0.0

C.
router(config-if)# ip address 10.10.80.1 255.255.255.0

D.
router(config-if)# ip address 10.10.80.1 255.255.224.0

E.
router(config-if)# ip address 10.10.80.1 255.255.240.0

F.
router(config-if)# ip address 10.10.80.1 255.255.255.240

Explanation:
255.255.224 equal /19 in CIDR format hence the answer

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Anthony Schaeffer

Anthony Schaeffer

Convert the CIDR 19 to a subnet mask of 255.255.255.240

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Niek

Niek

/19 converted to dotted decimal is 255.255.224.0

Therefore, only answer D is correct

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