ICDL Online Essentials study materials
ICDL Online Essentials study resources

ICDL Online Essentials key terms

ICDL Online Essentials · Get comfortable with the vocabulary.

Web browser

A software application used to request, download, and display web pages, allowing a user to move between sites and interact with online content.

Related: URL, Tab, Bookmark
URL

The unique address of a resource on the web, typically made up of a protocol, a domain name, and a path that points to a specific page or file.

Related: Domain name, Hyperlink, Web browser
Domain name

The human-readable part of a web address that identifies a website, such as the organisation name plus an ending like .com or .org.

Related: URL, HTTPS
Hyperlink

Text, an image, or a button that, when clicked, takes the user to another page, file, or section of a document.

Related: URL, Tab
Tab

A separate viewing area within a single browser window that lets a user keep several web pages open at once and switch between them.

Related: Web browser, Bookmark
Bookmark

A saved link to a web page stored in the browser so the user can return to it quickly without retyping the address.

Related: URL, History
History

A record kept by the browser of the pages a user has visited, usually with dates and times, which can be searched or cleared.

Related: Bookmark, Cache, Cookie
Cache

A store of temporary copies of web page files kept by the browser so pages load faster on later visits, which can become outdated.

Related: Cookie, History
Download

The process of copying a file from a remote server to the user's own device, for example saving a document or an installer.

Related: Upload, Malware
Upload

The process of sending a file from the user's device to a remote server, such as attaching a document to a web form or cloud folder.

Related: Download, Attachment
Home page

The page a browser is set to open when it starts or when the home button is pressed; it may also mean the main page of a website.

Related: Web browser, Tab
Search engine

An online service that indexes web pages and returns a list of results matching the words or phrases a user enters.

Related: Keyword, Search operator, Search results
Keyword

A significant word or phrase typed into a search engine to describe the information the user is looking for.

Related: Search engine, Search operator
Search operator

A special symbol or word used in a query to refine results, such as quotation marks for an exact phrase or a minus sign to exclude a term.

Related: Keyword, Search engine
Search results

The list of web pages returned by a search engine in response to a query, usually ranked by relevance and shown with titles and short summaries.

Related: Search engine, Keyword, Sponsored link
Sponsored link

A search result or advertisement that a business has paid to display, usually marked as an ad and placed near other results.

Related: Search results, Phishing
Boolean search

A search technique that combines keywords with logical words such as AND, OR, and NOT to include or exclude terms and narrow results.

Related: Search operator, Keyword
Reliable source

A source of information whose author, publisher, and evidence can be checked, making its content trustworthy enough to cite or act on.

Related: Cross-check, Search results
Cross-check

The practice of confirming a piece of information by comparing it against two or more independent sources before relying on it.

Related: Reliable source, Search results
Email

A method of sending written messages and files over the internet to one or more recipients using an email address.

Related: Email address, Attachment, CC
Email address

A unique identifier for an email account, written as a user name, the @ symbol, and a domain name, such as [email protected].

Related: Email, Domain name
Attachment

A file such as a document, image, or spreadsheet sent along with an email message and opened or saved by the recipient.

Related: Email, Malware, Upload
CC

A field used to send a copy of an email to additional recipients so that everyone can see who else received the message.

Related: BCC, Email
BCC

A field used to send a copy of an email to recipients whose addresses are hidden from the other people receiving the message.

Related: CC, Email
Reply all

An email command that sends a response to the original sender and to every other recipient listed in the To and CC fields.

Related: CC, Email
Signature

A block of text automatically added to the end of outgoing emails, often containing the sender's name, job title, and contact details.

Related: Email, Attachment
Mailing list

A single address that forwards a message to many subscribers at once, used to send announcements or newsletters to a group.

Related: Email, Netiquette
Netiquette

The accepted rules of polite and considerate behaviour when communicating online, such as avoiding all capitals and staying on topic.

Related: Email, Mailing list
Password

A secret string of characters used to prove a user's identity and protect an account from unauthorised access.

Related: Two-factor authentication, Phishing
Two-factor authentication

A login method that requires two different proofs of identity, such as a password plus a one-time code sent to a phone.

Related: Password, Phishing
Phishing

A scam in which a fake message or website tricks a person into revealing passwords, card numbers, or other private details.

Related: Spam, Password, HTTPS
Spam

Unwanted bulk email, often advertising or fraudulent, sent to large numbers of recipients without their request.

Related: Phishing, Firewall
Malware

Software designed to harm or exploit a device or steal data, including viruses, worms, spyware, and ransomware.

Related: Antivirus software, Firewall, Attachment
Antivirus software

A program that scans files and downloads for known harmful software, blocks it, and removes it from the device.

Related: Malware, Firewall
Firewall

A security tool that monitors network traffic and blocks connections that do not match the rules set to protect the device.

Related: Malware, Antivirus software
HTTPS

A secure version of the web protocol that encrypts data between the browser and the website, shown by a padlock in the address bar.

Related: URL, Phishing
Cookie

A small file a website stores on the user's device to remember settings, logins, or browsing behaviour between visits.

Related: Cache, History
Digital footprint

The trail of information a person leaves online through posts, searches, and website visits, which others may be able to find.

Related: Cookie, Netiquette