1. . What is an operating system?
(A) interface between the hardware and application programs
(B) collection of programs that manages hardware resources
(C) all of the mentioned
(D) system service provider to the application programs
2. . Where is the operating system placed in the memory?
(A) in the low memory
(B) either low or high memory (depending on the location of interrupt vector)
(C) in the high memory
(D) none of the mentioned
3. . If a process fails, most operating systems write the error information to a ______
(A) new file
(B) another running process
(C) log file
(D) none of the mentioned
4. . In operating system, each process has its own __________
(A) open files
(B) address space and global variables
(C) All of above
(D) pending alarms, signals, and signal handlers
5. . The main memory accommodates ____________
(A) CPU
(B) operating system
(C) user processes
(D) all of the mentioned
6. . The operating system is responsible for___________
(A) bad-block recovery
(B) booting from disk
(C) disk initialization
(D) all of the mentioned
7. . The operating system and the other processes are protected from being modified by an already running process because ____________
(A) every address generated by the CPU is being checked against the relocation and limit registers
(B) they have a protection algorithm
(C) they are in different memory spaces
(D) they are in different logical addresses
8. . The operating system maintains a ______ table that keeps track of how many frames have been allocated, how many are there, and how many are available.
(A) memory
(B) frame
(C) page
(D) mapping
9. . In real time operating system ____________.
(A) process scheduling can be done only once
(B) all processes have the same priority
(C) a task must be serviced by its deadline period
(D) kernel is not required
10. . The operating system keeps a small table containing information about all open files called ____________
(A) open-file table
(B) directory table
(C) file table
(D) system table
11. . Whenever a process needs I/O to or from a disk it issues a ____________
(A) system call to the CPU
(B) a special procedure
(C) system call to the operating system
(D) all of the mentioned
12. . The two steps the operating system takes to use a disk to hold its files are _______ and ________
(A) Caching & logical formatting
(B) Partitioning & logical formatting
(C) Swap space creation & caching
(D) Logical formatting & swap space creation
13. . The _______ program initializes all aspects of the system, from CPU registers to device controllers and the contents of main memory, and then starts the operating system.
(A) Main
(B) Bootstrap
(C) Bootloader
(D) Rom
14. . Which principle states that programs, users, and even the systems be given just enough privileges to perform their task?
(A) Principle of least privilege
(B) Principle of process scheduling
(C) Principle of operating system
(D) none of the mentioned
15. . Which one of the following errors will be handled by the operating system?
(A) power failure
(B) all of the mentioned
(C) connection failure in the network
(D) lack of paper in printer