Which of the following is crucial time while accessing data on the disk?

The host repeatedly checks if the controller is busy until it is not. It is in a loop that status register's busy bit becomes clear. This is called _____________ and a mechanism for the hardware controller to notify the CPU that it is ready is called ___________.

Unix Operating System is an __________.

Which of the following memory allocation scheme suffers from External fragmentation?

Information about a process is maintained in a _________.

Distributed OS works on the ________ principle

The problem of fragmentation arises in ________.

Which file system DOS typically use?

The program is known as _________ which interacts with the inner part of called kernel

The time taken by the disk arm to locate the specific address of a sector for getting information is called __________.

Which file system does Windows 95 typically use ?

A ___________ contains information about the file, including ownership, permissions, and location of the file contents.

Identify the odd thing in the services of operating system.

Cryptography technique is used in ________.

Which of the following is not an advantage of multiprogramming?

In ______ OS, the response time is very critical.

An optimal scheduling algorithm in terms of minimizing the average waiting time of a given set of processes is ______

Which technique was introduced because a single job could not keep both the CPU and the I/O devices busy?

Inter process communication can be done through __________.

In Priority Scheduling a priority number (integer) is associated with each process. The CPU is allocated to the process with the highest priority (smallest integer = highest priority). The problem of, Starvation ? low priority processes may never execute, is resolved by __________.

CPU performance is measured through ________.

PCB is ________

Software is a program that directs the overall operation of the computer, facilitates its use and interacts with the user. What are the different types of this software ?

A __________ is a software that manages the time of a microprocessor to ensure that all time critical events are processed as efficiently as possible. This software allows the system activities to be divided into multiple independent elements called tasks.

The primary job of the operating system of a computer is to ________.

With the round robin CPU scheduling in a time-shared system ________.

Which of the following is a criterion to evaluate a scheduling algorithm?

Which of the following is contained in Process Control Block (PCB)?

Super computers typically employ _______.

Consider the two statements.

(A) A network operating system, the users access remote resources in the same manner as local resource.

(B) In a distributed operating system, the user can access remote resources either by logging into the appropriate remote machine or transferring data from the remote machine to their own machine. Which of the statement is true?

Which of the following will determine your choice of systems software for your computer ?

one ore more:

What is a shell ?

The operating system manages ________.

The Hardware mechanism that enables a device to notify the CPU is called __________.

___________ begins at the root and follows a path down to the specified file

Process State is a part of

Virtual Memory is commonly implemented by __________.

Virtual memory is __________.

The high paging activity is called ________.

The kernel keeps track of the state of each task by using a data structure called ________.

_________ page replacement alogorithm suffers from Belady's anamoly.

A program at the time of executing is called ________.

_________ is a high speed cache used to hold recently referenced page table entries a part of paged virtual memory

If you don¿t know which version of MS-DOS you are working with, which command will you use after booting your operating system ?

_________ OS pays more attention on the meeting of the time limits

A process said to be in ___________ state if it was waiting for an event that will never occur.

The removal of process from active contention of CPU and reintroduce them into memory later is known as ____________.

The problem of thrashing is effected scientifically by ________.

Paging _________.

A thread is a __________ process

_________ allocates the largest hole (free fragmant) available in the memory.

Number of CPU registers in a system depends on ____________.

A major problem with priority scheduling is _________.

Which directory implementation is used in most Operating System?

The term " Operating System " means ________.

The operating system of a computer serves as a software interface between the user and the ________.

The collection of processes on the disk that is waiting to be brought into memory for execution forms the ___________

It is not the layer of the Operating system.

Who is called a supervisor of computer acitvity ?

Consider the two statements.

(A) Protection is an internal problem.

(B) Security is considered as an external environment within which the system works. Which of the statement is not true?

The process related to process control, file management, device management, information about system and communication that is requested by any higher level language can be performed by __________.

Which scheduler controls the degree of multiprogramming?

What is the name of the software which can be legally compiled and often used for free?

In interactive environments such as time-sharing systems, the primary requirement is to provide reasonably good response time and in general, to share system resources equitably. In such situations, the scheduling algorithm that is most popularly applied is ________.

Thrashing occurs ________.

In memory systems, boundary registers ________.

The principle of locality of reference justifies the use of ________.

The section of code which accesses shared variables is called as __________.

In memory management , a technique called as paging, physical memory is broken into fixed-sized blocks called ___________.

The state of a process after it encounters an I/O instruction is __________.

In one of the deadlock prevention methods, impose a total ordering of all resource types, and require that each process requests resources in an increasing order of enumeration. This voilates the _______________ condition of deadlock

Which of the following file name extension suggests that the file is Backup copy of another file ?

The higher versions of operating systems are so written that programs designed for earlier versions can still be run. What is it called ?

A scheduling algorithm is fair

Semaphore can be used for solving __________.

What is the name of the software which deals with the running of the actual computer and not with the programming problems?

Which the following do not belong to queues for processed?

When the process issues an I/O request:

What is long-term scheduler?

If all processes I/O bound, the ready queue will almost always be ____ and the Short term Scheduler will have a ___ to do

What is a medium-term scheduler?

What is a short-term scheduler?

The primary distinction between the short term scheduler and the long term scheduler is:

The only state transition that is initiated by the user process itself is:

In a time-sharing operating system, when the time slot given to a process is completed, the process goes from the running state to the:

In a multiprogramming environment:

Suppose that a process is in “Blocked” state waiting for some I/O service. When the service is completed, it goes to the:

The context of a process in the PCB of a process does not contain:

Which of the following does not interrupt a running processes?

Which module gives control of the CPU to the process selected by the short-term scheduler?

The processes that are residing in main memory and are ready and waiting to execute are kept on a list called:

The interval from the time of submission of a process to the time of completion is termed as

Which scheduling algorithm allocates the CPU first to the process that requests the CPU first?

In priority scheduling algorithm, when a process arrives at the ready queue, its priority is compared with the priority of

Time quantum is defined in :

In multilevel feedback scheduling algorithm

Which one of the following can not be scheduled by the kernel?

Three important design principles in operating systems are:

In message-passing IPC on a Linux system, the maximum message size permitted is:

When a process is created using the classical fork() system call, which of the following is not inherited by the child process?

The text segment of a process address space contains:

The threading model supported by the Linux operating system is:

Which one of the following error will be handle by the operating system?

By operating system, the resource management can be done via

If a process fails, most operating system write the error information to a ______

Which facility dynamically adds probes to a running system, both in user processes and in the kernel?

Which one of the following is not a real time operating system?

The OS X has ____________

File is generally defined to be:

____ is a specialized WRITE command for existing data files that allows for adding records to end of the file.

Which is not the function of the OS

Programmed I/O should be acceptable for which of the following system?

(...) provide an object-oriented way of implementing file systems, allows the same system call interface ( the API) to be used for different types of file systems

Which of the following is not an advantage of multiprogramming?