Worksheet Solutions: Operating System | Computer Applications for Class 9 PDF Download

Q.1. Fill in the blanks with the given words.

(i) An Operating System is a software that provides a platform for other applications to be executed.
(ii) Booting is the process of loading the Operating System into the memory during start up.
(iii) Hierarchical File System was made by Apple.
(iv) Process Scheduling is the process through which the Operating System decides which process gets the processor when and for how much time.

(v) The Kernel layer of the Operating System is responsible for multi-tasking, process control, exception handling and interrupt processing.
(vi) Multithreading is an Operating System that allows different parts of a single program to run concurrently.
(vii) The Distributed operating system allows software and data to be distributed around the system.
(viii) Hybrid kernel runs a few services in the kernel space to reduce the performance overhead of traditional microkernels.
(ix) Nano Kernel simplify the memory requirement by entrusting services, including the basic ones like interrupt controllers or timers to device drivers.
(x) The Process control system call is used to end, abort, create, terminate, allocate and free memory.
(xi) The UserInterface is a software layer which allows the user to interact directly with the operating system.

Q.2. State whether the following statements are True (T) or False (F).
(i)  The HFS was developed and maintained by Apple. True
(ii)  Booting is the process of storing the Operating System into the Hard Disk. False
(iii) Operating System is not responsible for de-allocating the memory when a process no longer requires it. False
(iv) User Interface layer is the core of an operating system. False
(v) An Application Software allocates the CPU to a process. False
(vi)  Real Time and Multi Threading Operating system behaves same like each other. False
(vii) Tracking of files and folders is the File Management functionality. True
(viii) An Application Software can execute even without an Operating system. False
(ix) FAT 32 file system is better than NTFS file system. False
(x) The Device Drivers are special software designed to enable interaction with hardware devices. True