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Networking Intermediate

What is Subnet?

A logical division of an IP network into smaller segments to improve performance, security, and management.

Subnetting divides a large network into smaller, more manageable sub-networks. A subnet mask (e.g., 255.255.255.0 or /24) defines the network and host portions of an IP address.

Benefits include reduced broadcast traffic, improved security through isolation, and efficient IP address allocation. CIDR notation (/24, /16, etc.) specifies subnet sizes concisely.

Related Terms

Network Segmentation
The practice of dividing a network into isolated segments to improve security, performance, and management.
TCP/IP
The fundamental communication protocol suite of the internet that defines how data is packaged, addressed, transmitted, and received.
DNS (Domain Name System)
A hierarchical naming system that translates human-readable domain names into IP addresses.
Token Bucket Algorithm
A rate limiting algorithm that allows burst traffic by accumulating tokens at a fixed rate and consuming them per request.
Network ACL
A set of rules that control inbound and outbound traffic at the subnet level, acting as a stateless firewall in cloud and enterprise networks.
IP Address
A unique numerical label assigned to each device on a computer network for identification and communication.
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