Basic CS-Operating System [Honeywell Placement]: Sample Questions 1 - 2 of 2

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Question 1

Operating System
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Short Answer▾

What is a real time system?

Explanation

  • Real-time operating systems are systems that respond to input immediately. They are used for such tasks as navigation, in which the computer must react to a steady flow of new information without interruption. Most general-purpose operating systems are not real-time because they can take a few seconds, or even minutes, to react.
  • Real time can also refer to events simulated by a computer at the same speed that they would occur in real life. In graphics , for example, a real-time program would display objects moving across the screen at the same speed that they would actually move.

Question 2

Operating System
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Short Answer▾

What is the difference between loosely coupled and tightly coupled systems?

Explanation

  • In object oriented design, the amount of coupling refers to how much the design of one class depends on the design of another class. In other words, how often do changes in class A force related changes in class B? Tight coupling means the two classes often change together, loose coupling means they are mostly independent.
  • In general Tight Coupling is bad in but most of the time, because it reduces flexibility and re-usability of code, it makes changes much more difficult, it impedes testability etc. So, In general, loose coupling is recommended because it՚s easier to test and maintain.

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