Classful Addressing (Solved Question 1)

TL;DR

Learn how to find the number of addresses, the first address, and the last address in a class C network.

Transcript

let's solve a question in class full addressing we will start the session with the outcomes upon the completion of this session the learner will be able to find the number of addresses first address and last address of an example class c network in this lecture we are going to solve a problem that involves the class c network and we know basically ... Read More

Key Insights

• 🧡 Class C networks are identified by the range of IP addresses from 192 to 223 in the first octet.
• 🏛️ The first three octets in a class C network represent the network portion, and the last octet represents the host portion.
• 🏛️ Each class C network can have a maximum of 2,9150 networks, with up to 254 usable host addresses per network.
• 🏛️ The number of usable addresses in a class C network is 256 (2^8), with 2 addresses reserved for network and broadcast purposes.
• 😷 The default subnet mask for a class C network is 255.255.255.0.
• 🏛️ In a class C network, the first address is the network address, and the last address is the broadcast address.
• #️⃣ To calculate the number of addresses in a class C network, subtract 2 from the total number of possibilities (256).

Questions & Answers

Q: What is the structure of a class C network?

A class C network has three octets designated for the network portion and one octet for the host portion. The default subnet mask is 255.255.255.0.

Q: How many networks and hosts are possible in a class C network?

Class C networks can have 2,9150 networks and a maximum of 254 hosts per network.

Q: How do you calculate the number of addresses in a class C network?

To calculate the number of addresses, subtract 2 from the total number of possibilities (256) due to the reserved network and broadcast addresses.

Q: In a given class C network with the IP address 192.168.17.9, what is the first and last address?

The first address in the network would be 192.168.17.0, and the last address would be 192.168.17.255.

Key Insights:

• Class C networks are identified by the range of IP addresses from 192 to 223 in the first octet.
• The first three octets in a class C network represent the network portion, and the last octet represents the host portion.
• Each class C network can have a maximum of 2,9150 networks, with up to 254 usable host addresses per network.
• The number of usable addresses in a class C network is 256 (2^8), with 2 addresses reserved for network and broadcast purposes.
• The default subnet mask for a class C network is 255.255.255.0.
• In a class C network, the first address is the network address, and the last address is the broadcast address.
• To calculate the number of addresses in a class C network, subtract 2 from the total number of possibilities (256).
• The host portion in a class C network is limited to the last octet, allowing for 256 possible addresses (0 to 255).

Summary & Key Takeaways

• Class C networks have a range of IP addresses from 192 to 223 in the first octet.

• In a class C network, the first three octets represent the network portion, and the last octet represents the host portion.

• Each class C network can have up to 254 usable host addresses, with the first and last addresses reserved for network and broadcast purposes.