Question 1

What is operating system?
A)collection of programs that manages hardware resources
B)system service provider to the application programs
C)link to interface the hardware and application programs
D)all of the mentioned

Accepted Answer

An operating system (OS) is indeed a collection of programs that manages hardware resources, acts as a system service provider to application programs, and serves as a link to interface the hardware and application programs. Therefore, all of the mentioned options accurately describe functions or aspects of an operating system.

Question 2

To access the services of operating system, the interface is provided by the
A)system calls
B)api
C)library
D)assembly instructions

Accepted Answer

System calls provide the interface for programs to interact with the operating system services.

Question 3

Which one of the following is not true?
A)kernel is the program that constitutes the central core of the operating system
B)kernel is the first part of operating system to load into memory during booting
C)kernel is made of various modules which can not be loaded in running operating system
D)kernel remains in the memory during the entire computer session

Accepted Answer

The kernel can indeed have modules that are dynamically loaded and unloaded while the operating system is running. This allows for greater flexibility and efficiency in managing system resources.

Question 4

Which one of the following error will be handle by the operating system?
A)power failure
B)lack of paper in printer
C)connection failure in the network
D)all of the mentioned

Accepted Answer

The operating system is designed to handle various errors, including power failure, lack of paper in the printer, and connection failure in the network, as part of its role in managing hardware and network resources.

Question 5

The scheme used in the above question is known as _______ or ________.
A)sector sparing
B)forwarding
C)backwarding
D)sector utilization

Accepted Answer

Forwarding is a technique used to handle data dependencies in pipelines by passing the result of an operation directly to a subsequent operation without writing it back to the register file.

Question 6

By operating system, the resource management can be done via
A)time division multiplexing
B)space division multiplexing
C)both (a) and (b)
D)none of the mentioned

Accepted Answer

Resource management in operating systems can be achieved through both time division multiplexing (managing CPU time among various programs) and space division multiplexing (managing memory and storage among programs).

Question 7

. If a process fails, most operating system write the error information to a
A)log file
B)another running process
C)new file
D)none of the mentioned

Accepted Answer

Most operating systems write error information to a log file when a process fails. This allows for easier debugging and system monitoring.

Question 8

Which facility dynamically adds probes to a running system, both in user processes and in the kernel?
A)dtrace
B)dlocate
C)dmap
D)dadd

Accepted Answer

DTrace (Dynamic Tracing) is designed to dynamically add probes to a running system, including both user processes and the kernel, allowing for comprehensive real-time diagnostics and troubleshooting.

Question 9

Which one of the following is not a real time operating system?
A)vxworks
B)windows ce
C)rtlinux
D)palm os

Accepted Answer

Palm OS is not a real-time operating system; it was designed primarily for personal digital assistants (PDAs) and does not have the characteristics of a real-time operating system, such as predictable task scheduling necessary for real-time applications. VxWorks, Windows CE, and RTLinux, on the other hand, are designed to support real-time operations.

Question 10

The OS X has
A)monolithic kernel
B)hybrid kernel
C)microkernel
D)monolithic kernel with modules

Accepted Answer

OS X uses a hybrid kernel, which combines elements of both monolithic kernels and microkernel architectures to provide a balance of performance and modularity.

Question 11

The systems which allows only one process execution at a time, are called
A)uniprogramming systems
B)uniprocessing systems
C)unitasking systems
D)none of the mentioned

Accepted Answer

Uniprogramming systems allow only one process to execute at a time.

Question 12

In operating system, each process has its own
A)address space and global variables
B)open files
C)pending alarms, signals and signal handlers
D)all of the mentioned

Accepted Answer

In operating systems, each process is provided with its own address space, set of global variables, open files, and a unique set of pending alarms, signals, and signal handlers to ensure process isolation and security. This encapsulation allows processes to run independently without interfering with each other.

Question 13

In Unix, Which system call creates the new process?
A)fork
B)create
C)new
D)none of the mentioned

Accepted Answer

The fork() system call is used in Unix to create a new process. The newly created process is a child process, which runs concurrently with the process that made the fork() call (parent process).

Question 14

A process can be terminated due to
A)normal exit
B)fatal error
C)killed by another process
D)all of the mentioned

Accepted Answer

A process can be terminated due to a normal exit, a fatal error, or being killed by another process, so all the mentioned options are correct.

Question 15

What is the ready state of a process?
A)when process is scheduled to run after some execution
B)when process is unable to run until some task has been completed
C)when process is using the cpu
D)none of the mentioned

Accepted Answer

The ready state of a process is when it is prepared to run and waiting for CPU allocation after being scheduled.

Question 16

What is interprocess communication?
A)communication within the process
B)communication between two process
C)communication between two threads of same process
D)none of the mentioned

Accepted Answer

Interprocess communication refers to the mechanisms an operating system provides to allow processes to manage shared data and information by communicating with each other. This is distinct from intraprocess communication, which involves communication between threads within the same process.

Question 17

A set of processes is deadlock if
A)each process is blocked and will remain so forever
B)each process is terminated
C)all processes are trying to kill each other
D)none of the mentioned

Accepted Answer

Deadlock in a set of processes occurs when each process in the set is waiting for an event that only another process in the set can cause, and thus, they are blocked indefinitely.

Question 18

A process stack does not contain
A)function parameters
B)local variables
C)return addresses
D)pid of child process

Accepted Answer

The process stack contains function parameters, local variables, and return addresses for function calls, but it does not contain the pid (process identifier) of child processes. The pid of child processes is managed by the operating system and is not part of the function call stack.

Question 19

Which system call returns the process identifier of a terminated child?
A)wait
B)exit
C)fork
D)get

Accepted Answer

The wait system call is used by a process to wait for one of its child processes to terminate and returns the process identifier (PID) of the terminated child. This allows the parent process to retrieve the termination status of its child.

Question 20

The address of the next instruction to be executed by the current process is provided by the
A)cpu registers
B)program counter
C)process stack
D)pipe

Accepted Answer

The program counter (PC) holds the address of the next instruction to be executed. It is updated after each instruction, pointing to the next instruction in the sequence.

Quiz 1: Operating Systems

What is operating system?

To access the services of operating system, the interface is provided by the

Which one of the following is not true?

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

The scheme used in the above question is known as _ or __.

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

The systems which allows only one process execution at a time, are called

In operating system, each process has its own

In Unix, Which system call creates the new process?

A process can be terminated due to

What is the ready state of a process?

What is interprocess communication?

A set of processes is deadlock if

A process stack does not contain

Which system call returns the process identifier of a terminated child?

The address of the next instruction to be executed by the current process is provided by the