Working with Internet and E-mails
What is Working with Internet and E-mails?
A global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols.
Key formula / rule: SMTP (Simple Mail Transfer Protocol)
Key points
- Define the Internet and its core components.
- Identify common web browsers and search engines and explain their functions.
- Explain the purpose and functionality of e-mail.
- Differentiate between SMTP, POP3, and IMAP protocols.
Common exam trap
Confusing the Internet with the World Wide Web.
Definitions
- Term
Internet
- Meaning
A global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols.
- Term
World Wide Web (WWW)
- Meaning
An information system on the Internet that allows documents and other web resources to be accessed via hyperlinks and URLs.
- Term
Web Browser
- Meaning
A software application for retrieving, presenting, and traversing information resources on the World Wide Web.
- Term
Search Engine
- Meaning
A program that searches for and identifies items in a database that correspond to keywords or characters specified by the user, used especially for finding particular sites on the World Wide Web.
- Term
E-mail
- Meaning
Electronic mail; a system for sending and receiving messages electronically over a computer network.
- Term
URL (Uniform Resource Locator)
- Meaning
The address of a given unique resource on the World Wide Web, specifying its location on a computer network and a mechanism for retrieving it.
- Term
Phishing
- Meaning
The fraudulent practice of sending emails purporting to be from reputable companies in order to induce individuals to reveal personal information, such as passwords and credit card numbers.
- Term
Spam
- Meaning
Unsolicited bulk email, often commercial in nature, sent to a large number of recipients.
- Term
IP Address
- Meaning
A unique numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication.
- Term
DNS (Domain Name System)
- Meaning
A hierarchical and decentralized naming system for computers, services, or any resource connected to the Internet or a private network. It translates human-readable domain names into numerical IP addresses.
Learning objectives
Define the Internet and its core components.
Identify common web browsers and search engines and explain their functions.
Explain the purpose and functionality of e-mail.
Differentiate between SMTP, POP3, and IMAP protocols.
Identify and explain the various fields and components of an email message.
Recognize common internet and email security threats like phishing.
Formulae
- Name
SMTP (Simple Mail Transfer Protocol)
- Note
Primary protocol for outgoing mail.
- Expression
Used for sending email messages from a client to a server or between servers.
- Name
POP3 (Post Office Protocol version 3)
- Note
Good for single-device access.
- Expression
Used by email clients to retrieve email from a mail server. Typically downloads messages to the local device and removes them from the server.
- Name
IMAP (Internet Message Access Protocol)
- Note
Good for multi-device access and keeping mail on server.
- Expression
Used by email clients to retrieve email from a mail server. Allows users to view and manage messages on the server, synchronizing across multiple devices.
- Name
HTTP (Hypertext Transfer Protocol)
- Note
For unencrypted web communication.
- Expression
The underlying protocol used by the World Wide Web. Defines how messages are formatted and transmitted, and what actions web servers and browsers should take in response to various commands.
- Name
HTTPS (Hypertext Transfer Protocol Secure)
- Note
For encrypted and secure web communication.
- Expression
An extension of HTTP for secure communication over a computer network. It uses SSL/TLS for encryption.
Prerequisites
Basic computer literacy
Understanding of files and folders
Familiarity with operating system basics
Common mistakes
Confusing the Internet with the World Wide Web.
Not understanding the difference between Cc and Bcc in emails.
Failing to recognize common phishing attempts in emails.
Incorrectly identifying the protocols used for sending vs. receiving emails.
Using weak passwords for email accounts, making them vulnerable.
Keywords
Internet
E-mail
WWW
Browser
Search Engine
SMTP
POP3
IMAP
URL
HTTP
HTTPS
Phishing
Spam
IP Address
DNS
Client-Server
Network
Practice preview
What does the acronym 'POP3' stand for in the context of email?…
easy
What is the purpose of the 'Subject' line in an email?…
easy
Which of the following is a common protocol used for sending emails?…
easy