ACA Aruba Associate Routing Protocols 2

Question 1

What does BGP stand for and where is it primarily used?

Accepted Answer

Border Gateway Protocol; used between autonomous systems on the internet

Answer

BGP is the path-vector routing protocol used between autonomous systems and is the routing protocol of the internet.

Question 2

What is the purpose of ECMP (Equal-Cost Multi-Path) routing?

Accepted Answer

To load-balance traffic across multiple paths with equal routing metrics

Answer

ECMP allows a router to load-balance traffic across multiple equal-cost paths simultaneously, increasing throughput and redundancy.

Question 3

Which command on an Aruba CX switch shows the IP routing table?

Accepted Answer

show ip route

Answer

The show ip route command displays the IP routing table on Aruba CX switches, including route sources, metrics, and next-hops.

Question 4

What is route summarization (also called route aggregation)?

Accepted Answer

Combining multiple specific routes into a single larger prefix to reduce routing table size

Answer

Route summarization combines multiple contiguous specific routes into a single summary advertisement to reduce routing table size and LSA flooding.

Question 5

In OSPF, what triggers a Shortest Path First (SPF) recalculation?

Accepted Answer

A change in the link-state database due to a new or changed LSA

Answer

OSPF triggers an SPF recalculation whenever the link-state database changes due to a new, updated, or withdrawn LSA from any router.

(ACA) Aruba Certified Associate Certification Practice Test