ACA Networking Fundamentals 5

Question 1

What is the purpose of the DNS (Domain Name System) protocol?

Accepted Answer

To translate human-readable domain names into IP addresses

Answer

DNS resolves fully qualified domain names (e.g., www.example.com) into IP addresses so hosts can route packets to the correct destination.

Question 2

Which technology allows multiple physical network interfaces to be combined into a single logical link for increased bandwidth and redundancy?

Accepted Answer

Link Aggregation (LACP / 802.3ad)

Answer

Link Aggregation (IEEE 802.3ad / LACP) bonds multiple physical links into one logical interface, combining their bandwidth and providing failover if one link fails.

Question 3

What is the purpose of QoS (Quality of Service) in a network?

Accepted Answer

To prioritize certain traffic types to ensure bandwidth and low latency for critical applications

Answer

QoS classifies and prioritizes traffic — such as VoIP or video — to guarantee acceptable latency, jitter, and bandwidth even during network congestion.

Question 4

Which of the following best describes a collision domain?

Accepted Answer

A network segment where simultaneous transmissions cause packet collisions

Answer

A collision domain is a network segment in which two devices transmitting simultaneously can cause a collision; each switch port creates its own separate collision domain.

Question 5

What is the administrative distance of a static route configured on a Cisco/Aruba device by default?

Accepted Answer

1

Answer

Static routes have a default administrative distance of 1, making them preferred over dynamic routing protocols but second only to directly connected routes (AD 0).

(ACA) Aruba Certified Associate Certification Practice Test

(ACA) Aruba Certified Associate Certification Practice Test

ACA Networking Fundamentals 5