Operating System Top Questions.
An operating system (OS) is software that manages computer hardware and provides a user-friendly interface for software applications. It coordinates the execution of programs, allocates system resources, and handles input/output operations. Operating systems come in various types, including Windows, macOS, Linux, and mobile OS like Android and iOS. They enable users to interact with computers and devices, handling tasks such as file management, multitasking, and security. Operating systems play a vital role in computer functionality, ensuring smooth and efficient operation while abstracting complex hardware details from users and applications.
In real time operating system _________
a task must be serviced by its deadline period
Hard real time operating system has ______________ jitter than a soft real time operating system.
less.
Jitter is the undesired deviation from the true periodicity.
For real time operating systems, interrupt latency should be _________
minimal.
Interrupt latency is the time duration between the generation of interrupt and execution of its service.
The priority of a process will ______________ if the scheduler assigns it a static priority.
remain unchanged
What are the characteristics of Host based IDS?
> Logs are analysed to detect tails of intrusion
> The host operating system logs in the audit information
> Logs includes logins, file opens, and program executions
What are the characteristics of stack based IDS?
They are integrated closely with the TCP/IP stack and watch packets
If the sum of the working – set sizes increases, exceeding the total number of available frames _____
the operating system selects a process to suspend
The information about all files is kept in ______
separate directory structure.