ICC Network Fundamentals 3

Question 1

Which network device operates at Layer 2 of the OSI model and uses MAC addresses to forward frames?

Accepted Answer

Switch

Answer

A switch operates at Layer 2 (Data Link) and maintains a MAC address table to intelligently forward frames only to the appropriate destination port.

Question 2

What type of transmission sends data to all devices on a network segment simultaneously?

Accepted Answer

Broadcast

Answer

A broadcast transmission sends a single packet to all devices within the broadcast domain, using the destination address 255.255.255.255 for IPv4.

Question 3

In subnetting, what is the purpose of the subnet mask?

Accepted Answer

To distinguish the network portion from the host portion of an IP address

Answer

The subnet mask identifies which bits of an IP address represent the network and which represent the host, enabling routers to determine if a destination is local or remote.

Question 4

Which wireless security protocol is considered the most secure for modern Wi-Fi networks?

Accepted Answer

WPA3

Answer

WPA3 is the most current and secure Wi-Fi security protocol, offering stronger encryption and protection against brute-force attacks compared to its predecessors.

Question 5

What is the function of the Address Resolution Protocol (ARP)?

Accepted Answer

Maps IP addresses to MAC addresses

Answer

ARP resolves a known IPv4 address to the corresponding MAC address so that data frames can be delivered on the local network segment.

(ICC) International Code Council Practice Test

(ICC) International Code Council Practice Test

ICC Network Fundamentals 3