What will come in place of the question mark (?) in the

Which of the following operating system is used on mobile phones ?

What is the primary function of the double finger gesture on a laptop touchpad?

Which is the most commonly used tool to restrict access to a computer system?  

In Fourth Generation Computer which type of  Storage devices is used?

Match the following?

    Company                             Operating system

Which of the following is not a cyber-attack?

When a group of computers and devices are connected together, it is called ______.

A key-board has at least:

Which of the followings is responsible to provide power supply to motherboard?

Computer memory that temporarily stores information is called the ____.