Name the following:

Four types of windows

Name the following:

Any three icons available on the taskbar

Name the following:

Three MS-DOS files

An operating system can be categorised into two modes. In one mode, a single user is allowed to interact with the computer at a time. In other mode, multiple users share a single CPU to carry out their tasks. When a number of users are using a CPU, their programs are executed by allotting equal amount of time to each user or by providing high priority to a specific job.

Based on the above case, answer the following questions:

(a) Name the mode in which a single user interacts with computer at a time.

(b) Name the mode in which multiple users work with single CPU.

(c) In which system, CPU time is equally shared among the users?

(d) In which system, high priority is given to a specific job?