Subnetring Quiz 1. What is the default subnet mask for a Class C network? a) 255.255 .0 .0 b) 255.0 .0 .0 c) 255.255 .255 .0 d) 255.255 .255 .255 Which IP address belongs to Class A? a) 192.168 .1 .1 b) 10.5 .6 .7 c) 172.16 .0 .1 d) 224.0 .0 .1 3. How many bits are in an IPv4 address? a) 32 b) 64 c) 128 d) 256 4. What does a subnet mask do? a) It assigns IP addresses to computers b) It defines the network and host portions of an IP address c) It allows computers to communicate over the internet d) It encrypts network traffic 5. Which of the following is a valid subnet mask? a) 255.255 .255 .260 b) 255.255 .255 .0 c) 255.255 .300 .0 d) 255.0 .255 .0 8. What is the last usable IP address in the subnet \( 192.168 .1 .0 / 24 \) ? W) 192.168 .1 .128 6. Which of the following subnet masks provides the most hosts per subnet? a) 255.255 .255 .0 b) 255.255 .254 .0 c) 255.255 .252 .0 d) 255.255 .240 .0 What is the network address of \( 192.168 .1 .75 / 24 \) ? a) 192.168 .1 .1 b) 192.168 .1 .255 c) 192.168 .1 .0 7. 19
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Beyond the Answer
Did you know that the concept of subnetting wasn't always a part of IP networking? It came into the spotlight in the early 1980s as the internet began to expand beyond a small network of universities and military institutions. Subnets emerged out of the need to manage growing networks efficiently, allowing for better use of IP addresses and improved network performance. This change was essential for creating the diverse internet landscape we know today! If you're getting started with subnetting, a common mistake is forgetting to to calculate the network and broadcast addresses correctly. The network address is always the first in the range (like 192.168.1.0 in your question) and the broadcast address is the last (like 192.168.1.255 for a /24 subnet). Remembering these two helps you figure out the usable IP range for devices. Happy subnetting!
