Network Topologies
Network topology is the pattern of interconnections of the various elements of a computer network. Network topologies may be physical or logical in design. Physical topology refers to the physical …
CIDR and Subnetting
Classless Inter Domain Routing (CIDR) is a method for assigning IP addresses without using the standard IP address classes like Class A, Class B or Class C. CIDR is a …
Automatic Private IP Addressing (APIPA)
Automatic Private IP Addressing (APIPA), is a feature of Windows (except Windows NT) operating systems. With APIPA, DHCP clients can automatically self-configure their IP configuration with an IP address and …
How does DNS Work?
DNS stands for Domain Name System. DNS is used for name resolution on a TCP/IP network. Before you can understand what DNS is and where it came from, you have …
OSI: Layer 3 – Network
The network layer is the third layer (layer 3) of the seven-layer OSI model. The network layer is directly above the data link layer and is concerned with getting data …
What is the OSI Model?
The Open Systems Interconnection (OSI) model is used to conceptualize the various parts of a network. The concept of a seven-layer model was provided by the work of Charles Bachman. …