CS604-Midterm
1 / 50
If a system is not in a safe state, there can be No deadlocks.
2 / 50
n-process critical section problem can be solved by using
3 / 50
The hardware mechanism that enables a device to notify CPU is called an -------------
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When process opens its first file explicitly it will get descriptor number ______
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______scheduler selects the process from the job pool and put them in main memory.
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The ________ requires that once a writer is ready, that writer performs its write as soon as possible , if a writer waiting to access the object, no new readers may start reading.
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The execution of critical sections must NOT be mutually exclusive
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Shared libraries and kernel modules are stored in directory
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Which of the Following is not an Operating System.
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We can install and run multiple OS by using VMWare.
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__________ scheduler selects the process from the job pool and put them in main memory.
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Time interval when the I/O Devices are accessed is known as --------.
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___________ is used in real time operating systems.
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________ scheduling algorithm is sometimes called shortest remaining time first scheduling algorithm.
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command displays the contents of current working directory.
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User mode can run the Privileged instructions.
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An absolute pathname starts with the root directory (/) and a relative pathname starts with your home directory.
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Preventing a condition of ________ to happen, deadlocks can be prevented to happen.
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________________ is an integer variable accessible through wait and signal which are atomic operations.
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You can display the contents (names of files and directories) of a directory in UNIX/Linux directory structure with the --------------- command.
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I MB or 1 megabyte is equivalent to----
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Kernel is responsible for scheduling the user level threads.
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A system call________
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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 _____
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This condition is known as ______________.
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The process of holding at least one resource and waiting to acquire additional resources that are currently being held by other processes is known as________.
27 / 50
The Shortest-Job-First Scheduling algorithm can be
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In indirect inter process communication, a sender_____mention the name of the recipient.
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___________ is a piece of code in a cooperating process in which the process may updates shared data (variable, file, database, etc.).
30 / 50
In deadlock detection and recovery algorithm, a deadlock exists in the system if and only if the wait for graph contains a _____________
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In Layered Approach of OS, the Layer highest Layer is User Interface layer.
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User Goal of OS is that It easy to use, reliable, safe and fast.
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The time it takes for the dispatcher to stop one process and start another running is known as the-----------.
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___________ algorithm is used in Deadlock avoidance.
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Which part of the computer system helps in managing the file and memory management system?
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I/O instructions are Privileged Instructions.
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You can use the ------------- command to display the status of suspended and background processes
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Cooperating processes never share any data, code, memory or state.
39 / 50
____ command display the status of a process.
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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.
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The bottom layer in the layered approach of Operating System is-----------
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The basic purpose of ________________is to help the users to utilize the hardware resources for completing different tasks in a simplified manner
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The _______ are used for communication between related or unrelated processes on the same system or unrelated processes on different systems.
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POSIX is a standard developed by ANSI
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The following is NOT a classical problem of synchronization
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The critical section problem can be solved by the following except
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In Unix/ Linux, by default the standard output file is attached to the ___________
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49 / 50
Utilities used for system administration (halt, ifconfig, fdisk, etc.) are stored in _____________ directory.
50 / 50
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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