Classless Interdomain Routing (CIDR): A method for allocating IP addresses and routing Internet Protocol packets. It effectively replaced the previous system based on classes (Class A, B, and C) and allows for more efficient and flexible allocation of IP addresses. CIDR notation is a compact representation of an IP address and its associated routing prefix, helping reduce the size of routing tables and make more IP addresses available within organizations.
Categories: CC D4: Network Security | CCSP D3: Cloud Platform and Infrastructure Security | CISM D3: Information Security Program | CISSP D4: Communication and Network Security | Security+ D3: Security Architecture | SSCP D6: Network and Communication Security
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