Cisco Certified Network Associate (CCNA) Practice Exam

What is the command to configure a specific OSPF network type on an interface?

1. (config-if)#ip ospf type NETWORK_TYPE

2. (config-if)#ip ospf network NETWORK TYPE

3. (config-if)#ospf network NETWORK TYPE

4. (config-if)#set ospf network NETWORK TYPE

The correct answer is: (config-if)#ip ospf network NETWORK TYPE

The command to configure a specific OSPF network type on an interface is correctly represented by the option that uses the syntax `(config-if)#ip ospf network NETWORK TYPE`. This command is essential in OSPF (Open Shortest Path First) configurations because it defines how the OSPF protocol recognizes and operates within the specified network segment. When you apply this command in interface configuration mode, you can specify the network type, which can greatly influence how OSPF operates in terms of neighbor relationships and routing table updates. The supported network types include point-to-point, broadcast, non-broadcast multi-access (NBMA), and others. Each type serves a different purpose, and the assigned type can impact OSPF's behavior in the network. For instance, a point-to-point link is treated differently compared to a broadcast network, leading to different methods in establishing adjacencies and exchanging routing information. The other options are not valid commands recognized by Cisco IOS for configuring OSPF network types on interfaces. They either use incorrect syntax or do not conform to the command structure defined by Cisco's operating system. Understanding the correct command is crucial for effective OSPF configuration and ensures that the network operates smoothly by establishing appropriate protocols for routing within varying network