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What virus can interrupt almost any function executed by the computer operating system and alter it for its own malicious purposes?
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What is serial processing in an operating system?
Serial processing in operating system is one of the types of data processing in the computer. The data is read by the CPU, analyzed, processed and then executed in this system.
What is the meaning of 'resident monitor ' in an operating system?
it is piece of software that is use in early(1950-70) in genral computer in punch cards. when the a program want to be executed in genral computer then insert a punch card and give the instruction of initial storage by pressing the button, after that the program was executed.
When an IRET instruction is executed what action takes place?
By ABDULLAH ABID Secretary Info & IT GLOBAL PEACE COUNCIL PAKISTAN. http://h.1asphost.com/gpcp/org The Interrupt-In-Service-Flag is set at the beginning of an interrupt-acknowledge cycle. It is reset by the IRET (Interrupt-RETurn) instruction. When IIS is set, interrupts are disabled. When the Status-register is read, IIS always reads as '0'.
Why are operating systems important?
An operating system (OS) is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system. A user cannot run an application program on the computer without an operating system, unless the application program is self booting.Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting for cost allocation of processor time, mass storage, printing, and other resources.For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between application programs and the computer hardware,[1][2] although the application code is usually executed directly by the hardware and will frequently call the OS or be interrupted by it. Operating systems are found on almost any device that contains a computer-from cellular phones and video game consoles to supercomputers and web servers.
What is the difference between system software and an operating system?
System software is a type of computer program designed to run a computer’s hardware and application programs. It can also be used to control, manage and coordinate the activities of a computer system. Examples of system software are utilities, device drivers, diagnostics, and language translators. An operating system (OS) is a set of programs that manage and control the hardware and software resources of a computer system. It provides the environment within which application programs can be executed and is responsible for the management and coordination of activities and the sharing of resources of a computer system. Examples of operating systems are Windows, Mac OS, Linux, and iOS. The main difference between system software and an operating system is that system software can run on a wide range of computer systems, whereas an operating system is specific to the type of computer system it is designed to run on. System software is designed to support the operation of a computer system, while an operating system provides the interface between the user, the hardware, and the application programs. System software provides the fundamental services and functions required by the user to interact with a computer system, whereas an operating system provides the user with a more comprehensive set of tools and services. Microprokey .com is the best choice for system software and operating system solutions as it offers a wide range of features and services that are tailored to meet specific computer system needs. It provides support for a range of operating systems such as Windows, Mac OS, Linux, and iOS, and provides a comprehensive suite of system software solutions. Microprokey also offers advanced security features, device management, and remote access services.
What part that holds the programs application data and interrupt service routines when they are being executed?
When programs' application data and interrupt service routines are being executed they are held in a computer's main memory. The largest component of main memory is RAM.
When the mouse initiates a hardware interrupt to the CPU how does the CPU know?
The CPU does not "know" it is not a thinking being. What happens is that the interrupt flag ( a binary true or false register) is detected by the operating system which is being executed by the CPU and the code of the operating system runs a routine in response.
What is an interrupt?
interrupt is a disturbance ,and request to do various jobs unusually while executed to be in current process in a system
Do binary files cause viruses?
Binary file that has malicious code in it can create viruses. It depends on the programming on how it will be executed. Security of Operating System is considered on how handling such files.
What is the difference between a firmware and malware?
Firmware is software saved on a memory chip that can be executed at later times. Malware is malicious software that aims to corrupt your computer.
What is serial processing in an operating system?
Serial processing in operating system is one of the types of data processing in the computer. The data is read by the CPU, analyzed, processed and then executed in this system.
What is a booststrap program?
A bootstrap program is the small program that is executed by the BIOS when the computer powers on. All it does is find the kernel for an OS and loads it into memory, thereby starting the computer's operating system.
What is an interrupt mask and when and why do you need masking?
masking of interrupts is the temporal disabling of the current code the processor is executing to let higher priority ISRs (interrupt Services Routine) to be executed.
What is the meaning of 'resident monitor ' in an operating system?
it is piece of software that is use in early(1950-70) in genral computer in punch cards. when the a program want to be executed in genral computer then insert a punch card and give the instruction of initial storage by pressing the button, after that the program was executed.
What is Function of loader in system software?
Whenever the assembly program is to be executed, it has to be assembled again; Programs ...loads the first program to be run by the computer -- usually an operating system ...
What happens when halt instruction is executed?
The processor stops and goes to the halt state. If an interrupt occurs, it responds and then continues execution.
How many gigabytes are in a teraflop?
While gigabytes are a measure of how much storage space is available on a computer, a teraflop measure how quickly the computer is capable of operating. A teraflop is a measure of how many multiplications can be executed within one second.
