The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite. It is a network of networks linked by a broad array of electronic, wireless and optical networking technologies. Cyberspace refers to the global network of interdependent information technology infrastructures, telecommunications networks and computer processing systems in which online communication takes place.

Correct Option: C

The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite. It is a network of networks linked by a broad array of electronic, wireless and optical networking technologies. Cyberspace refers to the global network of interdependent information technology infrastructures, telecommunications networks and computer processing systems in which online communication takes place.

Turn off, Log off and Shut Down are commands used to switch off the computer.

Correct Option: D

Turn off, Log off and Shut Down are commands used to switch off the computer.

Speed of processor chip is measured in megahertz (MHz) and gigahertz (GHz).

Correct Option: B

Speed of processor chip is measured in megahertz (MHz) and gigahertz (GHz).

In MS-Excel charts provide a visual representation of the values in a worksheet.

Correct Option: A

In MS-Excel charts provide a visual representation of the values in a worksheet.

Excel is different from the other three. Internet Explorer, Netscaps and Mozilla are navigation programmes. Microsoft Excel is a spreadsheet application.

Correct Option: D

Excel is different from the other three. Internet Explorer, Netscaps and Mozilla are navigation programmes. Microsoft Excel is a spreadsheet application.