What are the key object oriented concepts used by Windows NT?

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

Correct Answer: 1 Increased speed and memory capacity of microprocessors together with the support for virtual memory and 2 Growth of client server computing

Correct Answer: If a process in a monitor signal and no task is waiting on the condition variable, the signal is lost So this allows easier program design Whereas in semaphores, every operation affects the value of the semaphore, so the wait and signal operations should be perfectly balanced in the program

Correct Answer: It is a technique proposed by Lamport, used to order events in a distributed system without the use of clocks This scheme is intended to order events consisting of the transmission of messages Each system 'i' in the network maintains a counter Ci Every time a system transmits a message, it increments its counter by 1 and attaches the time-stamp Ti to the message When a message is received, the receiving system 'j' sets its counter Cj to 1 more than the maximum of its current value and the incoming time-stamp Ti At each site, the ordering of messages is determined by the following rules: For messages x from site i and y from site j, x precedes y if one of the following conditions holds(a) if Ti

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