Network+ Routing Protocols and Concepts Flashcards

OSPF calculates the best path using which algorithm?

Answer: Dijkstra's Shortest Path First algorithm

OSPF uses Dijkstra's Shortest Path First (SPF) algorithm to build a complete map of the network and calculate the lowest-cost path to each destination.

What is the maximum hop count allowed in RIPv2 before a route is considered unreachable?

Answer: 15

RIPv2 allows a maximum hop count of 15; a hop count of 16 represents infinity and marks the route as unreachable.

Which routing protocol divides networks into 'areas' to reduce routing overhead and improve scalability?

Answer: OSPF

OSPF uses a hierarchical area structure with Area 0 as the backbone, limiting LSA flooding and reducing the size of link-state databases in each area.

Which two components does EIGRP use by default in its composite metric calculation?

Answer: Bandwidth and delay

EIGRP uses bandwidth and delay as its default metric components, though it can optionally include load, reliability, and MTU in the calculation.

What does routing protocol 'convergence' describe?

Answer: When all routers in the network have consistent, accurate routing information

Convergence is the state where all routers in a network have synchronized, accurate, and consistent routing tables reflecting the current network topology.

Which routing protocol type sends its complete routing table to neighbors on a periodic timer?

Answer: Distance-vector protocol

Distance-vector protocols like RIP periodically broadcast or multicast their entire routing table to directly connected neighbors.

BGP is primarily used to exchange routing information between which entities?

Answer: Autonomous systems operated by different organizations

BGP exchanges routing information between autonomous systems (identified by AS numbers), making it the routing protocol that powers the global internet.