Device that converts digital signals to analog signals

Which software is used to manage and control the hardware components and allows interaction between the hardware and the other different types of software?

Which type of operating system allows multiple users to access and use the system simultaneously?

Software, such as viruses, worms and Trojan horses, that has a malicious intent, is known as:

Which layer of the OSI model provides services such as file transfer, email, and remote login?

Which among the following is not a type of software?

Which layer of the OSI model deals with data segmentation and reassembly?

What is the purpose of NAT (Network Address Translation) in a computer network?

Which Excel function is used to find the average of a range of cells?

Which among the following  is used to reduce the size of files to increase the amount of disk space in the computer system?

A computer program that converts an entire program into machine language is called a/an