Cisco CCNA Static and Dynamic Routing 5

Question 1

Which routing protocol uses Dijkstra's Shortest Path First (SPF) algorithm to calculate the best path?

Accepted Answer

OSPF

Answer

OSPF uses Dijkstra's SPF algorithm to compute the shortest path tree from the LSDB, determining the best loop-free path to each destination.

Question 2

A network administrator configures 'ip route 10.10.10.0 255.255.255.0 Null0'. What is the most common reason for this type of configuration?

Accepted Answer

To act as a summary route discard route, preventing routing loops for summarized addresses with no more-specific match

Answer

A Null0 static route is used as a discard route paired with a route summary, dropping packets for summarized addresses that have no specific destination.

Question 3

Which EIGRP packet type is used to acknowledge EIGRP updates and ensure reliable delivery?

Accepted Answer

Acknowledgment

Answer

EIGRP uses explicit Acknowledgment packets to confirm receipt of reliable packets like Updates, Queries, and Replies.

Question 4

In OSPF, what triggers a router to transition from the 'Loading' state to the 'Full' state?

Accepted Answer

The router receives all requested LSAs and its LSDB is synchronized with the neighbor

Answer

A router moves to the Full state once it has successfully received all LSAs requested during the Loading state, completing database synchronization.

Question 5

Which statement about RIPv1 versus RIPv2 is accurate?

Accepted Answer

RIPv2 sends updates as multicast to 224.0.0.9 and includes subnet mask information, unlike RIPv1

Answer

RIPv2 improves on RIPv1 by using multicast (224.0.0.9) for updates and including subnet mask information, enabling support for VLSM and CIDR.

Cisco CCNA Practice Test

Cisco CCNA Practice Test

Cisco CCNA Static and Dynamic Routing 5