What is a binary semaphore? What is its use?
A binary semaphore is one, which takes only 0 and 1 as values. They are used to implement mutual exclusion and synchronize concurrent processes. Read more »
‘Operating System Interview Questions’ - KyaPoocha.com
What is a drawback of MVT?
It does not have the features like . Ability to support multiple processors . Virtual storage . Source level debugging Read more »
What is process spawning?
When the OS at the explicit request of another process creates a process, this action is called process spawning. Read more »
What is mutant?
In Windows NT a mutant provides kernel mode or user mode mutual exclusion with the notion of ownership. Read more »
What is FtDisk?
It is a fault tolerance disk driver for Windows NT Read more »
What are the possible threads a thread can have?
. Ready . Standby . Running . Waiting . Transition . Terminated Read more »
What are rings in Windows NT?
Windows NT uses protection mechanism called rings provides by the process to implement separation between the user mode and kernel mode. Read more »
What is Executive in Windows NT?
In Windows NT, executive refers to the operating system code that runs in kernel mode. Read more »
What are DDks? Name an operating system that includes this feature.
DDks are device driver kits, which are equivalent to SDKs for writing device drivers. Windows NT includes DDks. Read more »
What is multi tasking, multi programming, multi threading?
Multi programming: Multiprogramming is the technique of running several programs at a time using timesharing.It allows a computer to do several things at the same... Read more »
What resources are used when a thread created? How do they differ from those when a process is created?
When a thread is created the threads does not require any new resources to execute the thread shares the resources like memory of the process to which they belong... Read more »
What is a Safe State and its’ use in deadlock avoidance?
When a process requests an available resource, system must decide if immediate allocation leaves the system in a safe state .System is in safe state if there exists... Read more »
What is Throughput, Turnaround time, waiting time and Response time?
Throughput – number of processes that complete their execution per time unit Turnaround time – amount of time to execute a particular process Waiting time –... Read more »
Describe the actions taken by thread library to context switch between user level threads?
The thread library function performs the following actions to context switch between user level threads Copy all live registers to Thread control Block (TCB) Restore... Read more »
Name some real time OSs.
Real-time operating systems are: QNX, LynxOS, OS-9, Intergrity, Katix, Fusion, IRIX, DeltaOS, eCos, AMX, CMX-RTX, INTime, PDOS and many others. Read more »
Is DOS a real time OS?
DOS is not a RTOS (real time Operating system), however MS DOS can be used with certain APIs to achieve the RTOS functionality. For example, the RT Kernel (Real... Read more »
What is meant by arm-stickiness?
If one or a few processes have a high access rate to data on one track of a storage disk, then they may monopolize the device by repeated requests to that track.... Read more »
What is the Translation Lookaside Buffer (TLB)?
In a cached system, the base addresses of the last few referenced pages is maintained in registers called the TLB that aids in faster lookup. TLB contains those... Read more »
When does the condition ‘rendezvous’ arise?
In message passing, it is the condition in which, both, the sender and receiver are blocked until the message is delivered. Read more »
What are the sub-components of I/O manager in Windows NT?
> Network redirector/ Server > Cache manager. > File systems > Network driver > Device driver Read more »