Correct Answer: 1Hardware abstraction layer 2Kernel 3Subsystems 4System Services

Correct Answer: To achieve maximum efficiency and reliability a mode of operation known as symmetric multiprocessing is used In essence, with SMP any process or threads can be assigned to any processor

Correct Answer: Encapsulation, Object class and instance

Correct Answer: 15 jobs

Correct Answer: In Windows NT, executive refers to the operating system code that runs in kernel mode

Correct Answer: The special thread a dispatcher will execute when no ready thread is found

Correct Answer: It is a fault tolerance disk driver for Windows NT

Correct Answer: Paging is solution to external fragmentation problem which is to permit the logical address space of a process to be noncontiguous, thus allowing a process to be allocating physical memory wherever the latter is available

Correct Answer: In batched operating system the users gives their jobs to the operator who sorts the programs according to their requirements and executes them This is time consuming but makes the CPU busy all the time

Correct Answer: Throughput : number of processes that complete their execution per time unit Turnaround time : amount of time to execute a particular process Waiting time : amount of time a process has been waiting in the ready queue Response time : amount of time it takes from when a request was submitted until the firstresponse is produced, not output (for time-sharing environment)