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One reason to learn C and C++ is simply that so much software is written in these languages. A related, butmore fundamental reason, is that C and C++ are relatively low-level, allowing ef?cient use of resources as well as direct access to pointers, critical for operating systems.
C is low-level, fairly close to what-you-see-is-what-you-get, with effectively no runtime system. (A runtime system is essentially an abstraction layer between the operating system and the appli- cation.) C is ef?cient in code space and execution time.
C++ is an upward-compatible (almost completely) object-oriented extension of C. This allows software-engineering bene?ts, including the use of classes, encapsulation ("private"), templates ("generics"), and other modularity advantages.
Define busy waiting and spinlock. When a process is in its significant section, any other process that tries to enter its critical section must loop continuously in the entry c
Which are the different states of a process? Different status of a process is: New: When the process is created. Running: When instructions are executed. Wait
basic advantage of using interrupt initiated data transfer over transfer under program control without an interrupt
What is thrashing? It is a method in virtual memory schemes when the processor spends most of its time swapping pages, rather than implementing instructions. This is because o
Explain external fragmentation? External fragmentation is the process where the free space and the space still available for use, in a piece of storage become separated into ma
When we download a movie from the Internet, we don't care about, say, packet sizes. However, even ifwe are not aware of howlow-level details of networks are implemented, our data i
what is system performence?
What are the system components of an operating system and explain them? a) Process management b) Main-memory management c) I/O management d) File management e) Seco
Q. What merit is there in having different time-quantum sizes on different levels of a multilevel queuing system? Answer: Processes that require more frequent servicing for ins
What are the different methods for handling deadlocks? Deadlock detection and recovery: Permit the system to enter a deadlock state, detect it and after that rec
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