Study for the JNCIS – Enterprise Routing and Switching (JNCIS-ENT) Exam. Prepare with targeted questions, hints, and detailed explanations. Ace your certification!

Multiple Choice

Under which hierarchy is OSPF configured?

In Junos, routing protocols live under the protocols namespace, and OSPF is configured in its own protocols block. That means you place all OSPF settings inside the OSPF subtree, defining areas and interfaces there. For example, you’d configure something like: [edit] protocols { ospf { area 0.0.0.0 { interface ge-0/0/0.0; } } } This is why the correct place is the protocols ospf hierarchy. The routing-options area is for static routes and routing policy decisions, and there isn’t a general igp block you configure OSPF under in Junos; each IGP has its own dedicated stanza under protocols (such as ospf or isis).

In Junos, routing protocols live under the protocols namespace, and OSPF is configured in its own protocols block. That means you place all OSPF settings inside the OSPF subtree, defining areas and interfaces there. For example, you’d configure something like:

[edit]

protocols {

ospf {

area 0.0.0.0 {

interface ge-0/0/0.0;

}

}

}

This is why the correct place is the protocols ospf hierarchy. The routing-options area is for static routes and routing policy decisions, and there isn’t a general igp block you configure OSPF under in Junos; each IGP has its own dedicated stanza under protocols (such as ospf or isis).