State the term multi programming
State the term multi programming.
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Multi programming:It is the technique of running various programs at a time by using timesharing.It permits a computer to do various things at same instant. It creates logical parallelism.The notion of multiprogramming is that the operating system keeps various jobs in memory concurrently. The operating system chooses a job from the job pool and begins executing a job, when such job requires waiting for any I/O operations the CPU is switched to other job. Therefore the main idea is that the central processing unit is never idle.
Illustrate the basic features of OOPs?
Define the types of kernel objects.
Public interface: The members of a class prefixed with public access modifier. All these members are visible to each and every class in a program.
Define the term Stack trace: It is a display of the runtime stack.
Left shift operator: Left shift operator (<<) is the bit manipulation operator. This moves the bits in its left operand zero or additional positions to the left, according to the value of its right operand. The zero bits are added up to the righ
Exception handler: It is a try statement which acts as an exception handler - a place where exception objects are dealt and caught with.
Unchecked exception: An exception for which it is not needed to give a local try statement or to propagate through a throws clause stated in the method header. An exception which is not handled will cause program annihilation when it is thrown.
Critical section: It is a section of code in which there is potential for a race hazard. The critical sections made use of the synchronized statements or methods.
Priority level: Each and every thread has a priority level that point out to the scheduler where it must be placed in the pecking order for being run. The eligible un-blocked thread with a specific priority will always be run prior to an eligible thre
Explain the term hard real-time.
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