MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Every part which is to be accessed by most programs which cannot be put in a library is in the kernel space: Device drivers, scheduler, memory handling, file systems, and network stacks. Many system calls are provided to applications, to allow them to access all those services.

Detailed explanation-2: -It consists of memory, the processor or the central processing unit (CPU), and input/output (I/O) components such as graphics, storage, and networking. The CPU executes computations and reads and writes to memory. There are two modes for the code executed by the system on a CPU: kernel mode and user mode.

Detailed explanation-3: -The kernel-mode components of Windows are the following: and thread management, security, I/O, and interprocess communication.

Detailed explanation-4: -A shell is basically an interface present between the kernel and the user. A kernel is the very core of a typical OS. A shell is a CLI (command-line interpreter). A kernel is a type of low-level program that has its interfacing with the hardware on top of which all the applications run (disks, RAM, CPU, etc.).

Detailed explanation-5: -Kernel is central component of an operating system that manages operations of computer and hardware. It basically manages operations of memory and CPU time. It is core component of an operating system.