CS604-Midterm
1 / 50
Cooperating processes never share any data, code, memory or state.
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Which part of the computer system helps in managing the file and memory management system?
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------------ register contains the size of the process
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If a system is not in a safe state, there can be No deadlocks.
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_____ system call is used to write to a file or FIFO or any other IPC channel.
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Each process must first request permission to enter its critical section. The section of code implementing this request is called the _____
7 / 50
Preemptive ----------------scheduling is sometimes called shortestremaining-time-first scheduling.
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The priority of a process can be changed using ___________ command.
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A_______ is an integer variable that, apart from initialization is accessible only through two standard atomic operations: wait and signal.
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____ is a virtual directory in Linux and Unix.
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The -------------- system call suspends the calling process.
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The procedure “The time at which the process finished working MINUS the arrival time of the process MINUS CPU burst for that process” will help calculate the _________.
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You can terminate a foreground process by pressing --------------
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DOS is single user operating system.
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____ command display the status of a process.
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_________________ scheduling allows a process to move between queues.
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The bottom layer in the layered approach of Operating System is-----------
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_______ is also called Swapper.
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A system call________
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The bottom-up view is that operating system is a resource manager who manages the hardware and software resources in the computer system.
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________ determines What will be done.
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Users are the People, machines or computers that uses the Hardware resources.
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The Purpose of Operating System is to generate Executable Programs and to _______ them.
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copy file1 file2 is an example of ______ OS view.
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In indirect inter process communication, a sender ________ mention the name of the recipient.
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______scheduler selects the process from the job pool and put them in main memory.
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Bounded Buffer is a buffer of ____________ size
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If the system can allocate resources to each process in some order and still avoid a deadlock then it said to be in ______ state.
29 / 50
When a process opens its first file explicitly it will get descriptor number _________
30 / 50
/usr/X11R6 is used by the X Window System.
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-------- command gives a snapshot of the current processes.
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___________ is a solution to the problem of indefinite blockage of low-priority processes.
33 / 50
command displays the contents of current working directory.
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The critical section problem can be solved by the following except
35 / 50
The returned code to the child process after successful fork system call execution is
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In indirect inter process communication, a sender_____mention the name of the recipient.
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An operating system is a control program that manages the execution of user programs to prevent errors and improper use of a computer.
38 / 50
In Layered Approach of OS, the Layer highest Layer is User Interface layer.
39 / 50
Linux Treats Devices as Files.
40 / 50
A semaphore that cause Busy-Waiting is termed as ___________.
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In Resource Allocation Graph, A _______ Pi →Rj indicates that process Pi may request resource Rj at some time in the future.
42 / 50
Mach, MacOS X Server, QNX, OS/2 and Windows NT are examples of OS Based on ______.
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Cache is non-volatile memory.
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I MB or 1 megabyte is equivalent to----
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The process id returned to the child process after successful fork system call execution is _____________.
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A time sharing system is
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Linux uses ___________ directory to store system configuration files.
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Command-line interpreter is also called __________ in some operating systems.
49 / 50
Files that start with a -------- in UNIX/Linux directory structure are known as hidden files .
50 / 50
__________ scheduler selects the process from the job pool and put them in main memory.
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