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Q1. Block or buffer caches are used
(A) To improve disk performance
(B) To handle interrupts
(C) To increase the capacity of main memory
(D) To speed up main memory read operation
Answer: (A) To improve disk performance
Q2. Can you name of the major Operating System used in computers?
(A) MS DOS
(B) OS/2
(C) UNIX
(D) All of the above
Answer: (D) All of the above
Q3. The operating system of a computer serves as a software interface between the user and
(A) Hardware
(B) Peripheral
(C) Memory
(D) Screen
Answer: (A) Hardware
Q4. Part of a program where the shared memory is accessed and which should be executed invisibly, is called
(A) Semaphores
(B) Directory
(C) Critical section
(D) Mutual exclusion
Answer: (C) Critical section
Q5. The advantage of a command processor running only built-in commands is:
(A) Flexibility to the users in running lists of commands by simply collecting them in named batch command files
(B) The command set being common across different hardware configurations
(C) Users can create system programs and run them as commands
(D) The processing is much faster than would other-wise be the case when user defined commands are used
Answer: (B) The command set being common across different hardware configurations
Q6. A system program that sets up an executable program in main memory ready for execution is
(A) Assembler
(B) Linker
(C) Loader
(D) Compiler
Answer: (C) Loader
Q7. Memory
(A) Is a device that performs a sequence of operations specified by instructions in memory
(B) Is the device where information is stored
(C) Is a sequence of instructions
(D) Is typically characterized by interactive processing and time-slicing of the CPU’s time to allow quick response to each user
Answer: (B) Is the device where information is stored
Q8. Assembly code data base is associated with
(A) Assembly language version of the program which is created by the code generation phase and is input to the assembly phase
(B) A permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure
(C) Consists of a full or partial list or the token’s as they appear in the program. Created by Lexical analysis and used for syntax analysis and interpretation
(D) A permanent table which lists all key words and special symbols of the language in symbolic form
Answer: (A) Assembly language version of the program which is created by the code generation phase and is input to the assembly phase
Q9. Which of the following rules out the use of GO TO?
(A) Flowchart
(B) HIPO-DIAGRAMS
(C) Nassi-Shneiderman diagram
(D) All of the above
Answer: (C) Nassi-Shneiderman diagram
Q10. In virtual memory systems, Dynamic address translation
(A) Is the hardware necessary to implement paging
(B) Stores pages at a specific location on disk
(C) Is useless when swapping is used
(D) Is part of the operating system paging algorithm
Answer: (A) Is the hardware necessary to implement paging
Q11. In analyzing the compilation of PL/I program, the description “creation of more optimal matrix” is associated with
(A) Assembly and output
(B) Code generation
(C) Syntax analysis
(D) Machine independent optimization
Answer:(D) Machine independent optimization
Q12. If you want to execute more than one program at a time, the systems software you are using must be capable of:
(A) Word processing
(B) Virtual memory
(C) Compiling
(D) Multitasking
Answer: (D) Multitasking
Q13. Job Control Language (JCL) statements are used to
(A) Read the input from the slow-speed card reader to the high-speed magnetic disk
(B) Specify, to the operating system, the beginning and end of a job in a batch
(C) Allocate the CPU to a job
(D) All of the above
Answer: (B) Specify, to the operating system, the beginning and end of a job in a batch
Q14. In an absolute loading scheme, which loader function is accomplished by loader
(A) Reallocation
(B) Allocation
(C) Linking
(D) Loading
Answer: (D) Loading
Q15. The main function of the dispatcher (the portion of the process scheduler) is
(A) Swapping a process to the disk
(B) Assigning ready process to the CPU
(C) Suspending some of the processes when the CPU load is high
(D) Bring processes from the disk to the main memory
Answer: (B) Assigning ready process to the CPU
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