350-401 · Question #1021
Refer to the exhibit. Which two configurations enable R1 and R2 to advertise routes into OSPF? (Choose two.)
The correct answer is A. R2 D. R1. The question requires identifying two OSPF commands that would enable R1 and R2 to advertise their respective connected networks into OSPF Area 0.
Question
Exhibits
Options
- AR2
- BR1
- CR2
- DR1
- ER2
How the community answered
(18 responses)- A72% (13)
- B17% (3)
- C6% (1)
- E6% (1)
Why each option
The question requires identifying two OSPF commands that would enable R1 and R2 to advertise their respective connected networks into OSPF Area 0.
The `network 10.1.1.0 0.0.0.255 area 0` command on R2 configures OSPF to include any interfaces on R2 that have an IP address within the 10.1.1.0/24 subnet into OSPF Area 0, thereby advertising this network segment.
This command incorrectly applies the 10.1.1.0/24 network to R1, which is intended for R2 based on the correct answers.
This command incorrectly applies the 10.1.2.0/24 network to R2, which is intended for R1 based on the correct answers.
The `network 10.1.2.0 0.0.0.255 area 0` command on R1 configures OSPF to include any interfaces on R1 that have an IP address within the 10.1.2.0/24 subnet into OSPF Area 0, enabling its advertisement.
This command specifies a 10.1.3.0/24 network, which is not part of the correct configuration for R1 or R2 based on the provided solution.
Concept tested: OSPF network command configuration
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/15-s/iro-15-s-book/iro-cfg-ospf.html#GUID-839F7D04-897F-4B11-827D-967A20633C14
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