Subject: Computer & IT
1st Year B.Sc in nursing.
What is Internet : Internet means of connecting a computer to any other computer anywhere in the world via dedicated routers and servers. When two computers are connected over the internet, they can send and receive all kinds of information such as text, graphics, voice and computer programs.
Uses of Internet Internet is used for different purposes by different people. Some uses of the Internet are listed below:
- E-Commerce (auction, buying, selling products etc.)
- Research (on-line journals, magazines, information etc.)
- Education (e-learning courses, virtual classroom, distance learning)
- E-Governance (online filing of application (Income Tax), on-line application forms etc.)
- On-line ticket booking (airplane tickets, rail tickets, cinema hall tickets etc.)
- On-line payments (credit card payments etc.)
- Video conferencing
- Exchange of views, music, files, mails, folders, data, information etc.
- Outsourcing jobs (work flow software)
- Social networking (sites like facebook, twitter)
- E-Telephony (sites like skype)
Web Browsers : Internet Explorer – Built into windows
Browser– A software program that allows Internet documents (like web pages) to be viewed, also called a Web Browser.Domain Name–A unique name that identifies a specific computer on the Internet.
Download–A term for transferring software or other files from one computer to another.
Email–Electronic Mail –Messages sent from one specific user to another using the Internet.
Email address–The way a specific user is identified so that they may receive email. An email address can be identified by the “@” sign. E.g. Support@seniorconnects.org
Home Page–The first page of a Website, similar to a table of contents.
HTML–Hyper Text Markup Language-‐A computer language used to make hypertext documents that are sent via the World Wide Web and viewed using a Browser.
HTTP–Hyper Text Transfer Protocol –The way that hypertext documents are transferred over the Internet.
Hypertext– A way of presenting information that allows words, pictures, sounds, and actions to be interlinked so that you may jump between them however you choose.
Link–A word, phrase, or image that allows you to jump to another document on the World Wide Web. Search Engine–A website that indexes and allows searching of information gathered from the Internet. Google is an example of this.
URL–Uniform Resource Locator –The entire address for a piece of information of the Internet. E.g. www.google.com
Webpage–A hypertext document available on the World Wide Web.
Website–A collection of web pages.
World Wide Web–A collection of resources available on the Internet using a web browser.
Cyberspace–The world of computer networks.
What is the difference between Cc and Bcc?
Cc stands for carbon copy which means that whose address appears after the Cc: header would receive a copy of the message. Also, the Cc header would also appear inside the header of the received message.
Bcc stands for blind carbon copy which is similar to that of Cc except that the Email address of the recipients specified in this field do not appear in the received message header and the recipients in the To or Cc fields will not know that a copy sent to these address.
What is hyperlink? Explain it with example ?
http is the Hypertext Transfer Protocol
so a hyperlink is a link that directs to a specific place in a hypertext/hypermedia document.
In computing, a hyperlink is a reference or navigation element in a document to another section of the same document or to another document that may be on or part of a (different) domain.
If you were to actually move you fingers you would see that there are plenty of examples, just google “hyperlink example”.
What is Web Address ? An internet address of a website, file, or document in the general formathttp://www.address/directories/filenam
Every computer connected to the internet has its unique web address, without which it cannot be reached by other computers. Also called universal resource locator or Uniform Resource Locator (URL).
File Transfer Protocol (FTP) is a standard network protocol used to transfer files from one host to another host over a TCP-based network, such as the Internet.
FTP is built on a client-server architecture and uses separate control and data connections between the client and the server. FTP users may authenticate themselves using a clear-text sign-in protocol, normally in the form of a username and password, but can connect anonymously if the server is configured to allow it. For secure transmission that hides (encrypts) the username and password, and encrypts the content, FTP is often secured with SSL/TLS (“FTPS”). SSH File Transfer Protocol (“SFTP”) is sometimes also used instead, but is technologically different.
Download / Upload
Definition: A download involves the receipt of a file copied from a remote network location. Often, a person downloads files to their personal computer from a remote server computer. In Microsoft email networks, for example, people download their email from an Exchange server to their Outlook client.
An upload involves sending a copy of a file to a remote network location. For example, Web publishers upload files to their Web server.
Sending files across a computer network does not necessarily constitute an upload or a download. The terms are more commonly used in client/server networking than in peer-to-peer networking.
Prepared By : Md. Tariqul Islam
B.Sc (Hons.), M.Sc
Computer & IT