What is a Subnet mask?
An IP address is divided into two parts: network and host parts. For example, an IP class A address consists of 8 bits identifying the … Read more
What is Subnetting ?
Subnetting is the practice of dividing a network into two or more smaller networks. It increases routing efficiency, and enhances the security of the network. I … Read more
Private IP addresses
The concept of private IP addressing addresses the IP address exhaustion problem. The private IP addresses can be used on the private network. These can … Read more
Classes of IP addresses
TCP/IP defines five classes of IP addresses: class A, B, C, D, and E. Each class has a range of valid IP addresses. The value … Read more
Types of IP addresses
There are three different types of IP addresses based on operational characteristics: Unicast, Broadcast and Multicast. Lets go through these one by one. 1. Unicast … Read more
Types of Ethernet cables – straight through and crossover
Ethernet cables can come in two forms when it comes to wiring: straight through cable and crossover cable Types of Ethernet cables 1. Straight through … Read more
Types of Ethernet cabling
There are three cable types common in use for Ethernet cabling: coaxial, twisted pair, and fiber-optic cabling. In today’s LANs, the twisted-pair cabling is the … Read more
Cisco three layer hierarchical model
Cisco three layer hierarchical model: Networks can be extremely complex with multiple protocols and diverse technologies. Hence, Cisco has developed a three layer hierarchical model … Read more
IEEE Ethernet standards
Ethernet is defined in a number of IEEE 802.3 standards. These standards define the physical and data-link layer specifications for Ethernet. The most important 802.3 … Read more
Half duplex and full duplex
In telecommunication, a duplex communication system is a point-to-point system of two devices that can communicate with each other in both direction. These two types … Read more