Basics of Computer Networking

by Dinesh Thakur Category: Services and Applications

Initially developed by Sun Microsystems Incorporated, the NFS provides on-line shared file access that is transparent and integrated; many TCP/IP sites use NFS to interconnect their computer's file systems. From the user's perspective, NFS is almost invisible. A user can execute an arbitrary application program and use arbitrary files for input or output. The file names themselves do not show whether the files are local or remote. Network File System allows the user to access, read, and modify a file on a remote device, (on the same network, usually), as if it were on the client machine.



 
by Dinesh Thakur Category: Services and Applications

The Simple Network Management Protocol (SNMP) is a framework for managing devices in an internet using the TCP/IP protocol suite. It provides a set of fundamental operations for monitoring and maintaining an internet.



 
by Dinesh Thakur Category: Services and Applications

What is http: HTTP full form HyperText Transfer Protocol used mainly to access data on the World Wide Web. HTTP is a Server and Client communication Protocol, which is primarily set of rules for formating and transferring webpage data (text, images, video and Multimedia files) over the world wide web. This is the Protocol used to create communication between Web Servers and Web Users. HTTP is an application layer Protocol that works on the top of the TCP/IP suite of Protocols.

 
by Dinesh Thakur Category: Services and Applications

The generic GSM network architecture is composed of three subsystems as the Radio Subsystem (RSS), the network and Switching Subsystem (NSS) and the Operation Subsystem (OSS). The subscriber carries the Mobile Station, which is part or RSS.

 
by Dinesh Thakur Category: Services and Applications

In the beginning around 1980s, analog cellular telephone systems were developing in Europe and each country was developing its own system and thus making them confined within their country boundaries. Later on, the need for an European public land mobile system was realized. In 1982, the Conference of European Posts and Telegraphs (CEPT),formed a study group called the Groupe Special Mobile (GSM) to develop a pan-European standard With the objectives of providing good subjective speech quality, support for international roaming etc. The proposed system was expected to meet certain criteria as mentioned below:

 
by Dinesh Thakur Category: Services and Applications

A cellular mobile communications system consists of a large number of low power wireless transmitters to create cells. These cells cover a certain area and typically called as base station. Depending upon the power level the size of cells can be decided. In this way, the radii of a cell may vary from tens of meters to tens of kilometers in a building to a city respectively.

 
by Dinesh Thakur Category: Services and Applications

Cellular radio has other popular names as cellular mobile or mobile phone. Radio is basically a device, which uses receiver and transmitter. Wireless communication can also be carried out without using radio. The interference caused by high power line to radio transmission is also an example of wireless communication though it is termed as noise. Inductive and conductive circuits and devices can communicate wirelessly for limited distance with less reliability and implementation problem. Therefore, these techniques cannot be termed as radio transmission.

 
by Dinesh Thakur Category: Services and Applications

This section presents an overview of the most common protocols used for TCP/IP communication. The discussion focuses on the nature of these applications and the purpose they serve.



 
by Dinesh Thakur Category: Services and Applications

• Trivial file transfer protocol (TFTP) is suited for those applications that do not require complex procedures of FTP and do not have enough resources (RAM, ROM) for this purpose.

• Typical applications of TFTP include loading the image on diskless machine and upgrading the operating system in network devices such as routers.



 
by Dinesh Thakur Category: Services and Applications

• Cookie is a special header sent by the server to the client or browser.

• Cookie introduces session information.



 
by Dinesh Thakur Category: Services and Applications

The WWW is the brainchild of Tim Berners Lee a CERN who had the idea of creating an electronic web of research information. The web is currently the fastest growing Internet information system, with new resources being added regularly. The web relies on a set of protocols, conventions and software to operate. The web is a distributed system of delivering linked documents over the Internet.



 
by Dinesh Thakur Category: Services and Applications

A Cable Modem provides bi-directional data communication via radio frequency channels on a cable television (CATV) infrastructure. Cable modems are primarily used to deliver broadband Internet access in the form of cable Internet, taking advantage of the high bandwidth of a cable television network.

 
by Dinesh Thakur Category: Services and Applications

ADSL stands for Asymmetric Digital Subscriber Line. ADSL is a type of DSL line and is one of the technologies vying to replace ISDN. It consists of the transmission of digital data supported by the symmetric pair of copper carried by the conventional telephone line or subscriber line, as long as the range does not exceed 5.5 km measured from the Telephone System, or there are no other services on the same cable that may interfere. It is a broadband Internet access technology, which implies a higher rate of data transmission in the data transfer, and supports simultaneous Internet browsing and phone use.

 
by Dinesh Thakur Category: Services and Applications

TELNET : TELNET (TELecommunication NETwork) is a network protocol used on the Internet or local area network (LAN) connections. It was developed in 1969 beginning with RFC 15 and standardized as IETF STD 8, one of the first Internet standards.



 
by Dinesh Thakur Category: Services and Applications

Before discussing about Domain Name Server: we are going to explain some factor and simple difference between Domain Name Server and Domain Name System.

 
by Dinesh Thakur Category: Services and Applications

Dynamic Host Configuration Protocol (DHCP) is a protocol used by networked devices or clients to obtain the parameters necessary for operationin an Internet Protocol network. This protocol reduces system administration workload, allowing devices to be added to the network with little or no manual configurations. Dynamic Host Configuration Protocol is a way to administrator network parameter assignment from a single DHCP server, or a group of DHCP servers arranged in a fault-tolerant manner. Even in small networks,



 
by Dinesh Thakur Category: Services and Applications

Bootstrap Protocol (BOOTP) : The Bootstrap Protocol (BOOTP) enables a client workstation to initialize with a minimal IP stack and request its IP address, a gateway address, and the address of a name server from a BOOTP server.

 
by Dinesh Thakur Category: Services and Applications

URL stands for Uniform Resource Locator that identifies a particular Internet resource. URL help the user to locate web page, gopher service, library catalog and image or text file locations. URLs are the standard addressing system of the www. A complete URL provides the web client with all the information it needs to contact a server and make a request for information. URLs are divided into three basic parts:



 
by Dinesh Thakur Category: Services and Applications

The Internet, World Wide Web (WWW) and information super highway have penetrated into lives of millions of people all over the world. The Internet is a network made up of thousands of networks worldwide. Obviously, these networks are composed of computers and other intelligent and active devices. In fact, Internet is an example of self-regulating mechanism and there is no one in-charge of the Internet.



 
by Dinesh Thakur Category: Services and Applications

"VOIP - Short for Voice Over Internet Protocol, a category of hardware and software that enables people to use the Internet as the transmission medium for telephone calls by sending voice data in packets using IP rather than by traditional circuit transmissions.

 


About Dinesh Thakur

Dinesh ThakurDinesh Thakur holds an B.C.A, MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to Contact us.