Explanation

Modern computers are primarily based on transistor technology. 

And old computers are based on vacuum tube

John Vincent Atanasoff invented the first digital computer in 1930. 

Charles Babbage is known as the Father of the Computer.

Explanation

The basic components of a machine language program are:

• Instructions: These are the fundamental commands that a computer's processor can execute, such as :
• move data,
• perform arithmetic operations, 
• jump to a location, etc. 
• Instructions are represented as binary codes, such as 0s and 1s.

Explanation

"Security can be set through passwords, kerberos tickets, or certificates, Secure access to your EC2 AMIs is controlled by passwords, Kerberos, and 509 certificates, and Most of the system image templates that Amazon AWS offers are based on Red Hat Linux." all are the correct statements.

Explanation

163.23 is a decimal number, which represents a floating-point number (Float) in programming and mathematics.

Explanation

Cathode rays are produced when there is a potential difference (voltage) applied across the electrodes. 

Explanation

TB stands for Terabytes. 

Terabytes are the largest unit of storage 

***

Megabyte 1024 kilobytes

Gigabyte         1024 megabytes

Terabyte         1024 gigabytes

Petabyte         1024 terabytes

*****

• Smallest to largest unit of storage: 

Byte (smallest)

KB

MB

GB

TB (Largest)

Explanation

The CPU performs basic arithmetic, logic, controlling, and

input/output (I/O) operations specified by the instructions in the program.

Explanation

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

Explanation

In Ruby, the syntax for defining a method is:

def method_name(parameters)

  # method body

end

The 'def' keyword is used to define a method, followed by the method name and parameters in parentheses.

The method body is indented and enclosed by the 'end' keyword.