MCQOPTIONS
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MCQOPTIONS
This section includes 1690 Mcqs, each offering curated multiple-choice questions to sharpen your Technical Programming knowledge and support exam preparation. Choose a topic below to get started.
| 1601. |
In an interrupt driven input/output : |
| A. | the CPU uses polling to watch the control bit constantly, looping to see if device is ready |
| B. | the CPU writes one data byte to the data register and sets a bit in control register to show that a byte is available |
| C. | the CPU receives an interrupt when the device is ready for the next byte |
| D. | the CPU runs a user written code and does accordingly |
| Answer» D. the CPU runs a user written code and does accordingly | |
| 1602. |
In a programmed input/output(PIO) : |
| A. | the CPU uses polling to watch the control bit constantly, looping to see if device is ready |
| B. | the CPU writes one data byte to the data register and sets a bit in control register to show that a byte is available |
| C. | the CPU receives an interrupt when the device is ready for the next byte |
| D. | the CPU runs a user written code and does accordingly |
| Answer» B. the CPU writes one data byte to the data register and sets a bit in control register to show that a byte is available | |
| 1603. |
In a memory mapped input/output : |
| A. | the CPU uses polling to watch the control bit constantly, looping to see if device is ready |
| B. | the CPU writes one data byte to the data register and sets a bit in control register to show that a byte is available |
| C. | the CPU receives an interrupt when the device is ready for the next byte |
| D. | the CPU runs a user written code and does accordingly |
| Answer» C. the CPU receives an interrupt when the device is ready for the next byte | |
| 1604. |
DMA is used for : |
| A. | High speed devices(disks and communications network) |
| B. | Low speed devices |
| C. | Utilizing CPU cycles |
| D. | All of the mentioned |
| Answer» B. Low speed devices | |
| 1605. |
An interrupt vector |
| A. | is an address that is indexed to an interrupt handler |
| B. | is a unique device number that is indexed by an address |
| C. | is a unique identity given to an interrupt |
| D. | none of the mentioned |
| Answer» B. is a unique device number that is indexed by an address | |
| 1606. |
What is an ISR ? |
| A. | Information Service Request |
| B. | Interrupt Service Request |
| C. | Interrupt Service Routine |
| D. | Information Service Routine |
| Answer» D. Information Service Routine | |
| 1607. |
What is a trap/exception ? |
| A. | hardware generated interrupt caused by an error |
| B. | software generated interrupt caused by an error |
| C. | user generated interrupt caused by an error |
| D. | none of the mentioned |
| Answer» C. user generated interrupt caused by an error | |
| 1608. |
How does the software trigger an interrupt ? |
| A. | Sending signals to CPU through bus |
| B. | Executing a special operation called system call |
| C. | Executing a special program called system program |
| D. | Executing a special program calle interrupt trigger program |
| Answer» C. Executing a special program called system program | |
| 1609. |
The initial program that is run when the computer is powered up is called : |
| A. | boot program |
| B. | bootloader |
| C. | initializer |
| D. | bootstrap program |
| Answer» E. | |
| 1610. |
A process that is based on IPC mechanism which executes on different systems and can communicate with other processes using message based communication, is called ________ |
| A. | Local Procedure Call |
| B. | Inter Process Communication |
| C. | Remote Procedure Call |
| D. | Remote Machine Invocation |
| Answer» D. Remote Machine Invocation | |
| 1611. |
The remote method invocation : |
| A. | allows a process to invoke memory on a remote object |
| B. | allows a thread to invoke a method on a remote object |
| C. | allows a thread to invoke memory on a remote object |
| D. | allows a process to invoke a method on a remote object |
| Answer» C. allows a thread to invoke memory on a remote object | |
| 1612. |
The full form of RMI : |
| A. | Remote Memory Installation |
| B. | Remote Memory Invocation |
| C. | Remote Method Installation |
| D. | Remote Method Invocation |
| Answer» E. | |
| 1613. |
To resolve the problem of data representation on different systems RPCs define _____________ |
| A. | machine dependent representation of data |
| B. | machine representation of data |
| C. | machine-independent representation of data |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 1614. |
The stub : |
| A. | transmits the message to the server where the server side stub receives the message and invokes procedure on the server side |
| B. | packs the parameters into a form transmittable over the network |
| C. | locates the port on the server |
| D. | all of the mentioned |
| Answer» E. | |
| 1615. |
RPC provides a(an) _____ on the client side, a separate one for each remote procedure. |
| A. | stub |
| B. | identifier |
| C. | name |
| D. | process identifier |
| Answer» B. identifier | |
| 1616. |
To differentiate the many network services a system supports ______ are used. |
| A. | Variables |
| B. | Sockets |
| C. | Ports |
| D. | Service names |
| Answer» D. Service names | |
| 1617. |
Remote Procedure Calls are used : |
| A. | for communication between two processes remotely different from each other on the same system |
| B. | for communication between two processes on the same system |
| C. | for communication between two processes on separate systems |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 1618. |
Bounded capacity and Unbounded capacity queues are referred to as : |
| A. | Programmed buffering |
| B. | Automatic buffering |
| C. | User defined buffering |
| D. | No buffering |
| Answer» C. User defined buffering | |
| 1619. |
The Zero Capacity queue : |
| A. | is referred to as a message system with buffering |
| B. | is referred to as a message system with no buffering |
| C. | is referred to as a link |
| D. | none of the mentioned |
| Answer» C. is referred to as a link | |
| 1620. |
In the Zero capacity queue : |
| A. | the queue can store at least one message |
| B. | the sender blocks until the receiver receives the message |
| C. | the sender keeps sending and the messages don’t wait in the queue |
| D. | none of the mentioned |
| Answer» C. the sender keeps sending and the messages don’t wait in the queue | |
| 1621. |
In the non blocking send : |
| A. | the sending process keeps sending until the message is received |
| B. | the sending process sends the message and resumes operation |
| C. | the sending process keeps sending until it receives a message |
| D. | none of the mentioned |
| Answer» C. the sending process keeps sending until it receives a message | |
| 1622. |
In indirect communication between processes P and Q : |
| A. | there is another process R to handle and pass on the messages between P and Qvv |
| B. | there is another machine between the two processes to help communication |
| C. | there is a mailbox to help communication between P and Q |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 1623. |
Which of the following are TRUE for direct communication : |
| A. | A communication link can be associated with N number of process(N = max. number of processes supported by system) |
| B. | A communication link can be associated with exactly two processes |
| C. | Exactly N/2 links exist between each pair of processes(N = max. number of processes supported by system) |
| D. | Exactly two link exists between each pair of processes |
| Answer» C. Exactly N/2 links exist between each pair of processes(N = max. number of processes supported by system) | |
| 1624. |
The link between two processes P and Q to send and receive messages is called : |
| A. | communication link |
| B. | message-passing link |
| C. | synchronization link |
| D. | all of the mentioned |
| Answer» B. message-passing link | |
| 1625. |
Messages sent by a process : |
| A. | have to be of a fixed size |
| B. | have to be a variable size |
| C. | can be fixed or variable sized |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 1626. |
An IPC facility provides at least two operations : |
| A. | write & delete message |
| B. | delete & receive message |
| C. | send & delete message |
| D. | receive & send message |
| Answer» E. | |
| 1627. |
Message passing system allows processes to : |
| A. | communicate with one another without resorting to shared data |
| B. | communicate with one another by resorting to shared data |
| C. | share data |
| D. | name the recipient or sender of the message |
| Answer» B. communicate with one another by resorting to shared data | |
| 1628. |
Inter process communication : |
| A. | allows processes to communicate and synchronize their actions when using the same address space |
| B. | allows processes to communicate and synchronize their actions without using the same address space |
| C. | allows the processes to only synchronize their actions without communication |
| D. | none of the mentioned |
| Answer» C. allows the processes to only synchronize their actions without communication | |
| 1629. |
The child process completes execution,but the parent keeps executing, then the child process is known as : |
| A. | Orphan |
| B. | Zombie |
| C. | Body |
| D. | Dead |
| Answer» C. Body | |
| 1630. |
The child process can : |
| A. | be a duplicate of the parent process |
| B. | never be a duplicate of the parent process |
| C. | cannot have another program loaded into it |
| D. | never have another program loaded into it |
| Answer» B. never be a duplicate of the parent process | |
| 1631. |
In UNIX, the return value for the fork system call is _____ for the child process and _____ for the parent process. |
| A. | A Negative integer, Zero |
| B. | Zero, A Negative integer |
| C. | Zero, A nonzero integer |
| D. | A nonzero integer, Zero |
| Answer» D. A nonzero integer, Zero | |
| 1632. |
In UNIX, each process is identified by its : |
| A. | Process Control Block |
| B. | Device Queue |
| C. | Process Identifier |
| D. | None of the the mentioned |
| Answer» D. None of the the mentioned | |
| 1633. |
With _____________ only one process can execute at a time; meanwhile all other process are waiting for the processor. With ______________ more than one process can be running simultaneously each on a different processor. |
| A. | Multiprocessing, Multiprogramming |
| B. | Multiprogramming, Uniprocessing |
| C. | Multiprogramming, Multiprocessing |
| D. | Uniprogramming, Multiprocessing |
| Answer» E. | |
| 1634. |
Cascading termination refers to termination of all child processes before the parent terminates ______ |
| A. | Normally |
| B. | Abnormally |
| C. | Normally or abnormally |
| D. | None of the mentioned |
| Answer» B. Abnormally | |
| 1635. |
A parent process calling _____ system call will be suspended until children processes terminate. |
| A. | wait |
| B. | fork |
| C. | exit |
| D. | exec |
| Answer» B. fork | |
| 1636. |
Restricting the child process to a subset of the parent’s resources prevents any process from : |
| A. | overloading the system by using a lot of secondary storage |
| B. | under-loading the system by very less CPU utilization |
| C. | overloading the system by creating a lot of sub-processes |
| D. | crashing the system by utilizing multiple resources |
| Answer» D. crashing the system by utilizing multiple resources | |
| 1637. |
To enable a process to wait within the monitor, |
| A. | a condition variable must be declared as condition |
| B. | condition variables must be used as boolean objects |
| C. | semaphore must be used |
| D. | all of the mentioned |
| Answer» B. condition variables must be used as boolean objects | |
| 1638. |
A monitor is a module that encapsulates |
| A. | shared data structures |
| B. | procedures that operate on shared data structure |
| C. | synchronization between concurrent procedure invocation |
| D. | all of the mentioned |
| Answer» E. | |
| 1639. |
Process synchronization can be done on |
| A. | hardware level |
| B. | software level |
| C. | both hardware and software level |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 1640. |
When high priority task is indirectly preempted by medium priority task effectively inverting the relative priority of the two tasks, the scenario is called |
| A. | priority inversion |
| B. | priority removal |
| C. | priority exchange |
| D. | priority modification |
| Answer» B. priority removal | |
| 1641. |
Mutual exclusion can be provided by the |
| A. | mutex locks |
| B. | binary semaphores |
| C. | both mutex locks and binary semaphores |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 1642. |
A semaphore is a shared integer variable |
| A. | that can not drop below zero |
| B. | that can not be more than zero |
| C. | that can not drop below one |
| D. | that can not be more than one |
| Answer» B. that can not be more than zero | |
| 1643. |
Which one of the following is a synchronization tool? |
| A. | thread |
| B. | pipe |
| C. | semaphore |
| D. | socket |
| Answer» D. socket | |
| 1644. |
If a process is executing in its critical section, then no other processes can be executing in their critical section. This condition is called |
| A. | mutual exclusion |
| B. | critical exclusion |
| C. | synchronous exclusion |
| D. | asynchronous exclusion |
| Answer» B. critical exclusion | |
| 1645. |
When several processes access the same data concurrently and the outcome of the execution depends on the particular order in which the access takes place, is called |
| A. | dynamic condition |
| B. | race condition |
| C. | essential condition |
| D. | critical condition |
| Answer» C. essential condition | |
| 1646. |
Which process can be affected by other processes executing in the system? |
| A. | cooperating process |
| B. | child process |
| C. | parent process |
| D. | init process |
| Answer» B. child process | |
| 1647. |
Which of the following does not interrupt a running process ? |
| A. | A device |
| B. | Timer |
| C. | Scheduler process |
| D. | Power failure |
| Answer» D. Power failure | |
| 1648. |
Which of the following need not necessarily be saved on a context switch between processes ? |
| A. | General purpose registers |
| B. | Translation lookaside buffer |
| C. | Program counter |
| D. | All of the mentioned |
| Answer» C. Program counter | |
| 1649. |
The context of a process in the PCB of a process does not contain : |
| A. | the value of the CPU registers |
| B. | the process state |
| C. | memory-management information |
| D. | context switch time |
| Answer» E. | |
| 1650. |
Suppose that a process is in “Blocked” state waiting for some I/O service. When the service is completed, it goes to the : |
| A. | Running state |
| B. | Ready state |
| C. | Suspended state |
| D. | Terminated state |
| Answer» C. Suspended state | |