by Dinesh Thakur Category: Services and Applications

ADSL:-Asymmetric Digital Subscriber Line (ADSL): A BROADBAND digital telecommunications (xDSL) technology that can operate over existing copper telephone lines, and is one of the technologies vying to replace ISDN. ADSL uses an upgraded phone line, all-digital technology, and supports simultaneous Internet browsing and phone use. ADSL is a much newer technology.

 
by Dinesh Thakur Category: Services and Applications

File transfer protocol is the way files are transferred from the server to the client across the network.

As good as Browsers are at reading web pages they are not so good when it comes to transferring large files over the Internet. For this FTP or File Transfer Protocol is needed.



 
by Dinesh Thakur Category: Services and Applications

A videoconference or video conference (also known as a video-teleconference) is a set of interactive telecommunication technologies which allow two or more locations to interact via two-way video and audio transmissions simultaneously. It has also been called 'visual collaboration' and is a type of groupware.

 
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

X.400 is a suite of ITU-T Recommendations that define standards for Data Communication Networks for Message Handling Systems (MHS) — more commonly known as "email".

 
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

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

4G is a packet-switched technology that uses bandwidth much more efficiently, allowing each user's packets to complete for available bandwidth, and billing users for the amount of data transmitted. It also solves the non-standardization problems associated with 3G networks for voice, video, and data transmission.

 
by Dinesh Thakur Category: Services and Applications

Fragmentation occurs when you save a file containing more data than can fit into one contiguous (connected) space on the disk. When this happens, the drive splits the data into many pieces small enough to fit wherever it can find the next empty space. If that first space isn't large enough, it puts down the next piece at the next empty space, and so on and so on. This is actually quite an efficient method of making use of the entire disk, as you can imagine how quickly a disk would fill if the computer needed a contiguous space for each file.



 
by Dinesh Thakur Category: Services and Applications

CompuServe (whose formal name is CompuServe Information Services, or CIS for short and sometimes CI$ for a statement) is a commercial online service that you can access through your modem. It has an incredible array of forums (sections devoted to particular interests), conferences, facilities for uploading and downloading information, and all the other benefits a powerful online service offers.



 

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About Dinesh Thakur

Dinesh ThakurDinesh Thakur holds an B.SC (Computer Science), 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.



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