Tag: ccna rns

Cloud Computing

Cloud Computing Atech Waqas Karim (4)

Cloud Computing is an approach to offer IT Services to customers remotely is called Cloud Computing. It is the practice of using IT & Network which are physically hosted in a remote location (mostly on the Internet) to store, manage and process data, rather than a local server or a personal computer. It is the delivery of hosted services over the internet. Simply, it is the technology of distributed data processing in which some scalable information resources and capacities are provided as a service to multiple external customers through Internet technology. Cloud computing is generally referred to the delivery of Read More …

IP Address & its Types

003. IP Address & its Types

“A unique identity number which is used to identify Network Devices & communication between these devices” IP Address is a logical numeric address that is assigned to every single computer, printer, switch, router or any other device that is part of a TCP/IP-based network. The IP address exists in every network, even only a pair of computers or a network of a large enterprise. Each computer, without exceptions, has its own unique IP-address, if there is a connection to the network. Each of the computers in the network is related to IP address. Moreover, there can not be two devices Read More …

Network Topology Types

Network Topology Types Atech Waqas Karim (0.0)_

“The layout pattern & connectivity scheme between the devices in a network is called network topology”. It is a virtual shape or structure of the network. Devices on the network are called as nodes. The most common nodes are computers and peripheral devices. Network topology is a virtual illustration of these nodes and their connections using physical cabling. There are a number of different types of network topologies which are broadly divided into two types: Physical Network Topology: Actual Connectivity/Layout as per real cabling & connections Logical Network Topology: Virtual view of the network that member devices see Physical Network Read More …

TCP 3-way Handshake Process

TCP (Transmission Control Protocol) is “a Connection Oriented Transport Layer (Layer4) protocol for reliable communication between network devices” TCPv4 was published in RFC-793 in 1981 and is still the current version. TCP is a connection oriented full-featured transport layer protocol that provides all the functions needed by a typical application for the reliable transportation of data across an internetwork. TCP is a host-to-host protocol. TCP provides reliable communication with a mechanism called Positive Acknowledgement with Re-transmission(PAR) employing the 3-way Handshake.   3-way Handshake Process TCP uses a process called 3-way Handshake for reliable communication. In 3-way Handshake process, three TCP segments are Read More …

TCP/IP Model

“ TCP/IP Model is a standard reference Model for conceptualising data communications between networks ” The TCP/IP is a practical Model that provides E2E data communication specifying how data should be packetized, addressed, transmitted, routed, and received. It characterizes and standardizes the communication functions of a Network system without regard to its underlying internal structure and technology. It is also called the Internet Model or the DoD Model. TCP/IP is a Vendor Neutral Model. It resolved many problems as described in below. Problem: Before TCP/IP Model, each vendor used to use its own network model to manufacture Network equipment. So, one Read More …