Saturday, August 16, 2008

Technology and Network

Why an Mp3 file is called so?

Mp3 is acronym for MPEG audio Layer-3. MPEG is the acronym for Moving picture Experts Group which developed compression systems used for video data like DVD movies and HDTV broadcasts. The MP3 Format is a compression system for Music .IT helps reduce the number of bytes in a song without affecting the quality of the sound. The goal of the Mp3 format is to compress a CD-quality song by a Factor of 10 to 14 without noticeably affecting the sound quality. With Mp3, a 32-megabyte (MB) song on a CD compresses to about 3 MB.

What is IMEI?

IMEI is the acronym for international Mobile Equipment identity, which is a unique number given to every mobile phone, typically found behind the Battery.IMEI numbers of cellular phones connected to a GSM network are stored in a database (EIS-Equipment Identity register) containing all valid mobile phone equipment. When a Phone is reported stolen or is not type approved, the number is marked invalid.

What is a star network?

A data-communications network in which several computers are connected to a central host computer through separate communication channels.

What is ring network?

Usually, a local area network in which microcomputers and/or minicomputers are connected in a continuous ring of computer communications.

Each piece of computer equipment in a ring network can only communicate with its adjacent neighbors.

What is Bus Network?

A local area network in which computer devices are connected to a common cable.

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