IT's All About Operating Systems Quiz Questions

The operating system is responsible for managing various aspects of a computer system, including memory, processor, and disk and I/O devices. It ensures efficient allocation and utilization of memory, schedules tasks for the processor, and handles input/output operations with disk drives and other devices. Therefore, the correct answer is "All of the above."

Macintosh is an operating system. It is developed by Apple Inc. and is the operating system used on Apple Macintosh computers. It provides the user interface and manages the hardware and software resources of the computer. Sony, HP, Dell, and Toshiba are not operating systems; they are brands of computer hardware.

The choice of systems software for a computer is determined by two factors: compatibility with the desired applications software and compatibility with the hardware. If the applications software is not compatible with the systems software, it cannot be used effectively. Similarly, if the systems software is not compatible with the hardware, it may not function properly. Therefore, both factors, 1 and 3, need to be considered when making a choice of systems software.

A shell is a command interpreter that allows users to interact with an operating system by executing commands. It provides a user-friendly interface for users to run programs, manage files, and perform various tasks on a computer. The shell interprets the commands entered by the user and translates them into instructions that the operating system can understand and execute.

A program at the time of executing is called a process.

Virtual memory is an illusion of extremely large main memory. It is a technique that allows a computer to use more memory than is physically available by using disk space as an extension of the main memory. This illusion is created by the operating system, which manages the mapping of virtual addresses to physical addresses and handles the movement of data between main memory and disk storage. By using virtual memory, programs can access a larger address space, improving overall system performance and allowing for the execution of larger and more complex applications.

Interrupt is the correct answer because an interrupt is a hardware mechanism that allows a device to interrupt the normal flow of the CPU and notify it that it requires attention. When an interrupt occurs, the CPU stops its current execution and jumps to a specific interrupt handler routine to handle the request from the device. This mechanism allows devices to asynchronously communicate with the CPU and ensures efficient and timely handling of various events and tasks.

An absolute path name begins at the root directory and follows a path down to the specified file. It provides the complete and exact location of the file or directory, starting from the root directory and including all intermediate directories. This allows for precise navigation and identification of the file or directory, regardless of the current working directory. Relative path names, on the other hand, are specified relative to the current working directory, while standalone names do not provide any path information and assume the file or directory is in the current working directory. Therefore, the correct answer is absolute path name.

Virtual memory is commonly implemented by demand paging. Demand paging is a memory management technique where data is loaded into memory only when it is needed, rather than loading the entire program into memory at once. This allows for efficient memory utilization and allows programs to run even if the physical memory is limited. With demand paging, the operating system can swap pages of data between the physical memory and the disk, bringing in only the required pages when they are needed. This helps to optimize the use of memory resources and improve overall system performance.

The given answer states that both statements A and B are false. This means that neither in a network operating system nor in a distributed operating system, the users access remote resources in the same manner as local resources. Additionally, in a distributed operating system, the user cannot access remote resources by logging into the appropriate remote machine or transferring data from the remote machine to their own machine.