ACA Networking Fundamentals 3

Question 1

Which IEEE standard defines the Spanning Tree Protocol used to prevent loops in a switched network?

Accepted Answer

IEEE 802.1D

Answer

IEEE 802.1D defines the original Spanning Tree Protocol (STP), which blocks redundant paths to create a loop-free Layer 2 topology.

Question 2

What is the purpose of a VLAN trunk port?

Accepted Answer

To carry traffic for multiple VLANs between switches using 802.1Q tagging

Answer

A trunk port carries tagged frames for multiple VLANs between switches or between a switch and a router, using IEEE 802.1Q encapsulation.

Question 3

What does CSMA/CD stand for and where is it used?

Accepted Answer

Carrier Sense Multiple Access / Collision Detection – used in traditional Ethernet

Answer

CSMA/CD is the media access control method used in traditional half-duplex Ethernet, where stations detect collisions and retransmit after a random back-off.

Question 4

Which protocol dynamically assigns IP addresses, subnet masks, gateways, and DNS server information to hosts?

Accepted Answer

DHCP

Answer

DHCP (Dynamic Host Configuration Protocol) automatically provides hosts with IP addressing parameters, eliminating the need for manual static configuration.

Question 5

What is the broadcast address for the subnet 192.168.10.64/26?

Accepted Answer

192.168.10.127

Answer

The /26 subnet starting at 192.168.10.64 has a block size of 64; the broadcast address is 192.168.10.64 + 63 = 192.168.10.127.

(ACA) Aruba Certified Associate Certification Practice Test

(ACA) Aruba Certified Associate Certification Practice Test

ACA Networking Fundamentals 3