Topic is classful addressing
Understand the Problem
The question is related to the concept of classful addressing in networking, which involves dividing IP addresses into different classes (A, B, C, etc.) based on the number of networks and hosts. It relates to how IP addresses were allocated and managed before the implementation of classless addressing.
Answer
Classful addressing divides IPs into 5 classes: A, B, C, D, E, each with specific ranges.
Classful IP addressing divides IP addresses into five fixed classes (A, B, C, D, and E) based on the first few bits of the address. Each class has a predefined range and subnet mask. It is an obsolete system replaced by CIDR (Classless Inter-Domain Routing).
Answer for screen readers
Classful IP addressing divides IP addresses into five fixed classes (A, B, C, D, and E) based on the first few bits of the address. Each class has a predefined range and subnet mask. It is an obsolete system replaced by CIDR (Classless Inter-Domain Routing).
More Information
Classful addressing was predominantly used in the early years of the internet until CIDR was introduced to allow for a more flexible allocation of IP addresses and reduce waste.
Tips
A common mistake is confusing classful with classless addressing. Remember classful has fixed classes.
Sources
- Introduction of Classful IP Addressing - GeeksforGeeks - geeksforgeeks.org
- Classful vs Classless Addressing - GeeksforGeeks - geeksforgeeks.org
- Classful and Classless Addressing Explained - Auvik Networks - auvik.com
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