NTA-NET (UGC-NET) Computer Science & Applications (87) Operating Systems with Unix-Main Functions of Operating Systems Study Material (Page 3 of 3)
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Studying Operating Systems and UNIX
- Being a core topic, it is expected to weigh in heavily on the exam pattern. That said, we generally see that the topics can be handled well. The mathematical questions from the topics like scheduling and paging are particularly scoring.
- The only drawback is that such questions can tend to be time consuming. On the Unix section, we usually expect one or two questions in a normal paper.
- Chances are that the standard commands can be asked directly or there can be a tougher question asking to integrate the outputs …
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Operating Systems, Computer Systems, Why Do We Need Operating System
Let us first see what is meant by computer systems.
Computer Systems
Combination of hardware, software and data which are used to solve the problems of human beings.
- Edit m photograph
- To access a webpage
Software ➾ programs ➾ collection of instructions
Hardware
- CPU ⇾ Chip
- Memory (various level of memories)
- RAM
- Hard disk
- Cache
- Registers
Programs are stored in RAM, what CPU will do is? It will fetch the program from the memory/RAM & then it will execute it.
To…
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