Explanation

• A computer cannot ‘boot’ if it does not have the Operating System.
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• An operating system is system software that handles software and hardware resources and gives services to computer programs.
• The computer system requires an operating system for “boot”
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• A Loader in the computer systems is a unit of the operating system which is primarily responsible for loading the libraries and programs.
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• An assembler in the computer system is a program that interprets software programs written using “assembly language” into “machine language”.
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Explanation

• E-mail stands for: Electronic Mail

• Father of E-mail: Ray Tomlinson

• First E-mail sent: 1971

• @ is used to divide an email into: two parts

• SMTP helps to send: E-mails

• SMTP stands for: Simple Mail Transfer Protocol

• Received email is saved: inbox

• Sent email is saved in: sent box

• Maximum attachment size in Yahoo Email: 25 MB

• G-mail stands: Google Mail

• Email spam also called: junk email

• To close email account click: sign out

• To create new E-mail: Sign Up

• Email hacking means: Illegal access to open email accounts of others

• Junk email is also called: Spam 

•  At sign (@): always a part of email address

• Sending an E-mail is similar to: writing a letter

• A allows us to access our e-mail from anywhere: Webmail interface 

• Bookmark:  is associated with Internet E-mail

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Explanation

English mathematician and inventor Charles Babbage is often called the father of computers.

Because he introduced the basic ideas that nearly all modern computers rely on.

Babbage started designing an analytical engine in 1830, which could be programmed to perform calculations using punched cards. 

Explanation

A firewall is a security system that monitors and controls incoming and outgoing network traffic.

Its primary function is to prevent unauthorized access to or from a private network by filtering data based on security rules.

Explanation

VPN are also used for hides users’ physical location.

VPN masks your IP address.

A VPN can hide a user’s browsing activity.

There are 6 types of VPN protocols.

There are 2 types of VPNs.

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