200-301 · Question #174
Which statements describe the routing protocol OSPF? (Choose three.)
The correct answer is A. It supports VLSM. C. It confines network instability to one area of the network. E. It allows extensive control of routing updates.. The OSPF protocol is based on link-state technology, which is a departure from the Bellman-Ford vector based algorithms used in traditional Internet routing protocols such as RIP. OSPF has introduced new concepts such as authentication of routing updates, Variable Length Subnet M
Question
Options
- AIt supports VLSM.
- BIt is used to route between autonomous systems.
- CIt confines network instability to one area of the network.
- DIt increases routing overhead on the network.
- EIt allows extensive control of routing updates.
- FIt is simpler to configure than RIP v2.
How the community answered
(30 responses)- A93% (28)
- B3% (1)
- F3% (1)
Explanation
The OSPF protocol is based on link-state technology, which is a departure from the Bellman-Ford vector based algorithms used in traditional Internet routing protocols such as RIP. OSPF has introduced new concepts such as authentication of routing updates, Variable Length Subnet Masks (VLSM), route summarization, and so forth. OSPF uses flooding to exchange link-state updates between routers. Any change in routing information is flooded to all routers in the network. Areas are introduced to put a boundary on the explosion of link-state updates. Flooding and calculation of the Dijkstra algorithm on a router is limited to changes within an area.
Topics
Community Discussion
No community discussion yet for this question.