Refer to the exhibit. An engineer is asked to configure router R1 so that it forms an OSPF single- area neighbor relationship with R2. Which command sequence must be implemented to configure the route

The correct answer is C. router ospf 10 network 10.0.0.0 0.0.0.3. Wildcard masks are used to specify a range of network addresses. They are commonly used with routing protocols (like OSPF) and access lists. Just like a subnet mask, a wildcard mask is 32 bits long. It acts as an inverted subnet masks, but with wildcard mask, the zero bits indica

Submitted by eva_at· Mar 5, 2026IP Connectivity

Question

Refer to the exhibit. An engineer is asked to configure router R1 so that it forms an OSPF single- area neighbor relationship with R2. Which command sequence must be implemented to configure the router?

Exhibits

Options

Arouter ospf 100 network 10.0.0.0 0.0.0.252
Brouter ospf 100 network 10.0.0.0 0.0.0.3
Crouter ospf 10 network 10.0.0.0 0.0.0.3
Drouter ospf 10 network 10.0.0.0 0.0.0.3

How the community answered

(24 responses)

A
4% (1)
B
4% (1)
C
75% (18)
D
17% (4)

Explanation

Wildcard masks are used to specify a range of network addresses. They are commonly used with routing protocols (like OSPF) and access lists. Just like a subnet mask, a wildcard mask is 32 bits long. It acts as an inverted subnet masks, but with wildcard mask, the zero bits indicate that the corresponding bit position must match the same bit position in the IP address. The one bits indicate that the corresponding bit position doesn’t have to match the bit position in the IP address.

Topics

#OSPF#Router configuration#Wildcard mask#OSPF adjacency

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