Tuesday, 26 April 2011

The Internet,The Web and Electronic Commerce

URL












URL also known as Uniform Resource Locator,web site address.URL are the address that defines the route to a file on an Internet server.It cannot have spaces or certain other characters and uses forward slashes to denote different directories.The URL contains the protocol prefix, port number, domain name, subdirectory names and file name.

HTML

HTML stands for HyperText Markup Language.HTML is the basic building-blocks of webpages.The markup tells the Web browser how to display a Web page's words and images for the user.HTML allows images and objects to be embedded and can be used to create interactive forms.

JavaScript
JavaScript is the scripting language used for client side scripting and developed by Netscape in 1995.Microsoft and Netscape introduced JavaScript support in their browsers.It adds interactive functions to HTML pages, which are otherwise static, since HTML is a display language, not a programming language.

Applets


Applet is a small program that works from within a larger application program. An applet has limited features but only requires limited memory resources. It cannot operate on its own. Applets are written in the Java programming language.

Blogs

Blog is a Web site that contains an online personal journal with reflections, comments, and often hyperlinks provided by the blog owner.A blog is often a mixture of what is happening in a person's life and what is happening on the Web, a kind of diary site.


Wikis
A wiki is a Web site that allows users to add and update content on the site using their own Web browser.With a wiki, any user can edit the site content, including other users' contributions, using a regular Web browser.


FTP

FTP also known as File Transfer Protocol,the protocol for exchanging files over the Internet.

Plug-in



Software that is installed into an existing application in order to enhance its capability. For example, plug-ins are widely used in image editing programs such as Photoshop to add some special effect.

Filters


 A program that accepts a certain type of data as input, transforms it in some manner, and then outputs the transformed data.

Internet Security Suite


Internet security is a branch of computer security specifically related to the Internet. Its objective is to establish rules and measures to use against attacks over the Internet.

Wednesday, 13 April 2011

Careers in IT

Webmaster
Webmaster is the person who responsible for creating, managing, and maintaining one or more websites. The jobs of a webmaster include writing HTML for Web pages, organizing the Web site's structure, responding to e-mails about the Web site, and keeping the site up-to-date.He or she has the specialized knowledge and skills to maintain the integrity of the site's content and its embedded links (hyperlinks), updates the information as often as required, and attends to the questions and problems of the site's users.

Computer Support Specialist


Computer support specialist provide technical assistance to computer system users. They answer questions or resolve computer problems for clients in person, via telephone or from remote location. They also may provide assistance concerning the use of computer hardware and software, including printing,installation,word
processing, electronic mail, and operating systems.

Technical Writer
A technical writer is the person who responsible for writing hardware and software documentation, online help, technical definitions and technical product descriptions on Web sites.They are often copy writers and vice-versa.A good technical writer can write about a complicated technical subject or task in ways that almost anyone can clearly understand.Besides that, precision in technical writing tends to be critical because if anything is described incorrectly, readers may act improperly on what is said, causing mistakes and problems at work.

Software Engineer


A software engineer is a person who designs,writes,tests computer programs and programs system-level software, such as operating systems, database management systems (DBMSs) and embedded systems. A software engineer is often confused with a programmer, but the two are vastly different disciplines. While a programmer creates the codes that make a program run, a software engineer creates the designs the programmer implements.

Network Administrator



Network admisnistrator is a person who manages a local area communications network (LAN) or wide area network (WAN) for an organization. Responsibilities include network security, installing new hardware and applications, monitoring software upgrades and daily activity, enforcing licensing agreements, developing a storage management program and providing for routine backups, not to mention ensuring that it is up and running all the time.

Database Administrator


A database administrator is a person responsible for the design, implementation, maintenance and repair of an organization's database.They also responsible for the performance, integrity and security of a database. Additional role requirements are likely to include planning, development and troubleshooting.


System Analyst


System analyst is a person who responsible for the development of an information system. Systems analysts design and modify systems by turning user requirements into a set of functional specifications, which are the blueprint of the system. They design the database or help design it if data administrators are available. They also develop the manual and machine procedures and the detailed processing specifications for each data entry, update, query and report program in the system.

Programmer


Programmer is a person who composes instructions for computer systems to refer to when performing a given action. They usually have an extensive background in some form of computer coding language, which may include XML, PHP, Perl, HTML, or SQL.They are also essential to the development of computers because without the coding that is necessary to make a computer work properly, the machine would be useless. Programmers may specialize in one area or may write instructions for a wide range of systems or programs.
 

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