CIW Internet Protocols & Network Foundations 3

Question 1

What is the primary purpose of NAT (Network Address Translation)?

Accepted Answer

To translate private IP addresses to a public IP address for internet access

Answer

To encrypt network traffic between two endpoints

Answer

To assign domain names to IP addresses on a local network

Answer

To monitor network traffic for intrusion attempts

Question 2

What is the function of a subnet mask?

Accepted Answer

To divide an IP address into its network and host portions

Answer

To encrypt communications between subnets

Answer

To automatically assign IP addresses to new devices

Answer

To filter malicious traffic at the network boundary

Question 3

Which IP address range is defined as a Class C private network?

Accepted Answer

192.168.0.0 – 192.168.255.255

Answer

10.0.0.0 – 10.255.255.255

Answer

172.16.0.0 – 172.31.255.255

Answer

169.254.0.0 – 169.254.255.255

Question 4

What does ICMP stand for, and what is its primary use?

Accepted Answer

Internet Control Message Protocol; used for error reporting and network diagnostics

Answer

Internet Connection Management Protocol; used for managing active connections

Answer

Internal Communication Message Protocol; used for local area network messaging

Answer

Internet Control Messaging Process; used for encrypting diagnostic packets

Question 5

What does the 'ping' command use to test connectivity to a remote host?

Accepted Answer

ICMP Echo Request messages and measures round-trip time

Answer

TCP SYN packets to initiate a connection

Answer

UDP packets on port 7 to check if the host is reachable

Answer

HTTP HEAD requests to verify the host is responding

Question 6

What is the function of a proxy server in a network environment?

Accepted Answer

It acts as an intermediary between clients and destination servers, forwarding requests on their behalf

Answer

It assigns IP addresses and network configuration to client devices

Answer

It establishes encrypted VPN tunnels between remote sites

Answer

It manages authoritative DNS records for a domain

Question 7

Which IPv6 address is the equivalent of the IPv4 loopback address 127.0.0.1?

Accepted Answer

::1

Answer

::0

Answer

fe80::1

Answer

ff02::1