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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

VLAN (Virtual LAN)
A logical grouping of network devices that creates separate broadcast domains on the same physical network infrastructure.
Content Delivery Network (CDN)
A geographically distributed network of servers that caches and delivers web content from locations closest to users for faster load times.
Overlay Network
A virtual network built on top of an existing physical network, enabling features like container networking and VPNs.
BGP (Border Gateway Protocol)
The routing protocol that makes the internet work by exchanging routing information between autonomous systems.
Latency
The time delay between sending a request and receiving a response, measured in milliseconds.
OSI Model
The seven-layer Open Systems Interconnection model that standardizes network communication functions from physical transmission to application protocols.
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