CS604-Midterm
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The Purpose of Operating System is to generate Executable Programs and to _______ them.
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The major advantage of multi-programming system is
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When a process opens its first file explicitly it will get descriptor number _________
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User Goal of OS is that It easy to use, reliable, safe and fast.
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The execution of critical sections must NOT be mutually exclusive
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Linux Treats Devices as Files.
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A dashed line is used to represent a _________ in Resource Allocation Graph.
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The main characteristic of a Real time system is
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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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The priority of a process can be changed using ___________ command.
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The Shortest-Job-First Scheduling algorithm can be
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Progress and Bounded Waiting are some of the characteristics to solve the critical section problems.
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------------ register contains the size of the process
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DOS is single user operating system.
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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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The -----------scheme is not applicable to a resource allocation system with multiple instances of each resource type.
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____ command gives a snapshot of the current processes.
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__________ scheduler selects the process from the job pool and put them in main memory.
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The following requirement for solving critical section problem is known as ______. “There exists a bound on the number of times that other processes are allowed to enter their critical sections after a process has made a request to enter its critical section and before that request is granted.”
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Preventing a condition of ________ to happen, deadlocks can be prevented to happen.
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Time interval when the I/O Devices are accessed is known as --------.
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The following is NOT a classical problem of synchronization
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The priorities of processes in the __________ group remain fixed.
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_________________ scheduling allows a process to move between queues.
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A major problem with priority scheduling algorithms is ______.
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In indirect inter process communication, a sender_____mention the name of the recipient.
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I/O instructions are Privileged Instructions.
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Physical memory is broken down into fixed-sized blocks, called----------- and Logical memory is divided into blocks of the same size, called -----------
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In indirect inter process communication, a sender ________ mention the name of the recipient.
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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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Utilities used for system administration (halt, ifconfig, fdisk, etc.) are stored in _____________ directory.
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____ command display the status of a process.
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The address generated by the CPU, after any indexing or other addressing-mode arithmetic, is called a --------address, and the address it gets translated to by the MMU is called a ---------address.
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In ________addressing, the recipient is not required to name the sender.
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In Layered approach of OS, Lowest Layer is known as ________.
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______scheduler selects the process from the job pool and put them in main memory.
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In Linux directory structure, there is ___________ root directory.
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Mkfifo() is a _______.
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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.).
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I MB or 1 megabyte is equivalent to----
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command displays the contents of current working directory.
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Preemptive ----------------scheduling is sometimes called shortestremaining-time-first scheduling.
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Hardware provide basic computing resource.
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rm and [r]mkdir commands are used to _____________ directory.
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The hardware mechanism that enables a device to notify CPU is called an -------------
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Mach, MacOS X Server, QNX, OS/2 and Windows NT are examples of OS Based on ______.
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A condition where a set of blocked processes each holding a resource and waiting to acquire a resource held by another process in the set is termed as ________.
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The creating process is called a--------------- process while the new processes are called the -------------- of that process
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The Operating system is a layer of software between _________ and ___________.
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