OPERATING SYSTEMS FOR COMPUTERS
COMPUTER OPERATING SYSTEMS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
memory protection
|
|
|
Kernel
|
|
|
Cobol
|
|
|
Python
|
|
|
Java
|
Detailed explanation-1: -Memory protection is a way to control memory access rights on a computer, and is a part of most modern instruction set architectures and operating systems. The main purpose of memory protection is to prevent a process from accessing memory that has not been allocated to it.
Detailed explanation-2: -A memory management unit (MMU), sometimes called paged memory management unit (PMMU), is a computer hardware unit having all memory references passed through itself, primarily performing the translation of virtual memory addresses to physical addresses.
Detailed explanation-3: -operating system (OS), program that manages a computer’s resources, especially the allocation of those resources among other programs. Typical resources include the central processing unit (CPU), computer memory, file storage, input/output (I/O) devices, and network connections.
Detailed explanation-4: -8.3 Direct memory access. The use of direct memory access (DMA) allows an external device to transmit data directly into the computer memory without involving the CPU. The CPU is provided with control facilities which allow the DMA controller (external to the CPU) to gain control of the CPU data bus.
Detailed explanation-5: -Memory management is the process of controlling and coordinating a computer’s main memory. It ensures that blocks of memory space are properly managed and allocated so the operating system (OS), applications and other running processes have the memory they need to carry out their operations.