TRB-CS-VIP ONLINE COACHING CENTER (QUIZ-4)OPERATING SYSTEM

TRB-CS-Master online coaching center (QUIZ-5)- (Operating System)

Quiz

 

1. What is the name given to the organized collection of software that controls the overall operation of a computer?
   1.   Working system
   2.   Peripheral system
   3.   Operating system
   4.   Controlling system
2. The principle of locality of reference justifies the use of
   1.   reenterable
   2.   non reusable
   3.   virtual memory
   4.   cache memory
3. The register or main memory location which contains the effective address of the operand is known as
   1.   pointer
   2.   indexed register
   3.   special location
   4.   scratch pad
4. Assembly code data base is associated with
   1.   assembly language version of the program which is created by the code generation phase and is input to the assembly phase.
   2.   a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure.
   3.   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.
   4.   a permanent table which lists all key words and special symbols of the language in symbolic form.
5. Thrashing can be avoided if
   1.   the pages, belonging to the working set of the programs, are in main memory
   2.   the speed of CPU is increased
   3.   the speed of I/O processor is increased
   4.   all of the above
6. In analyzing the compilation of PL/I program, the term "Lexical analysis" is associated with
   1.   recognition of basic syntactic constructs through reductions.
   2.   recognition of basic elements and creation of uniform symbols
   3.   creation of more optional matrix.
   4.   use of macro processor to produce more optimal assembly code
7. Resolution of externally defined symbols is performed by
   1.   Linker
   2.   Loader
   3.   Compiler
   4.   Assembler
8. System generation:
   
   1.   is always quite simple
   2.   is always very difficult
   3.   varies in difficulty between systems
   4.   requires extensive tools to be understandable
9. System generation:
   1.   is always quite simple
   2.   is always very difficult
   3.   varies in difficulty between systems
   4.   requires extensive tools to be understandable
10. The Memory Address Register
    1.   is a hardware memory device which denotes the location of the current instruction being executed.
    2.   is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
    3.   contains the address of the memory location that is to be read from or stored into.
    4.   contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write".
11. In virtual memory systems, Dynamic address translation
    1.   is the hardware necessary to implement paging
    2.   stores pages at a specific location on disk
    3.   is useless when swapping is used
    4.   is part of the operating system paging algorithm
12. Fragmentation of the file system
    1.   occurs only if the file system is used improperly
    2.   can always be prevented
    3.   can be temporarily removed by compaction
    4.   is a characteristic of all file systems
13. Fragmentation of the file system
    1.   occurs only if the file system is used improperly
    2.   can always be prevented
    3.   can be temporarily removed by compaction
    4.   is a characteristic of all file systems
14. A non-relocatable program is one which
    
    1.   cannot be made to execute in any area of storage other than the one designated for it at the time of its coding or translation.
    2.   consists of a program and relevant information for its relocation.
    3.   can itself performs the relocation of its address-sensitive portions.
    4.   all of the above
15. Which of the following are(is) Language Processor(s)
    1.   assembles
    2.   compilers
    3.   interpreters
    4.   All of the above
16. 41 . In which addressing mode the effective address of the operand is the contents of a register specified in the instruction and after accessing the operand, the contents of this register is incremented t
    1.   index addressing
    2.   indirect addressing
    3.   auto increment
    4.   auto decrement
17. The memory allocation scheme subject to "external" fragmentation is
    1.   segmentation
    2.   swapping
    3.   pure demand paging
    4.   multiple contiguous fixed partitions
18. 43 . While working with MS-DOS, which command will you use to transfer a specific file from one disk to another?
    
    1.   DISKCOPY
    2.   COPY
    3.   RENAME
    4.   FORMAT
19. 44 . What is the name of the operating system for the laptop computer called MacLite?
    
    1.   Windows
    2.   DOS
    3.   MS-DOS
    4.   OZ
20. 45 . In which addressing mode the contents of a register specified in the instruction are first decremented, and then these contents are used as the effective address of the operands?
    
    1.   index addressing
    2.   indirect addressing
    3.   auto increment
    4.   auto decrement
21. 46 . What is the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer user's productivity?
    
    1.   Defined values
    2.   Fixed values
    3.   Default values
    4.   Special values
22. Page stealing
    
    1.   is a sign of an efficient system
    2.   s taking page frames from other working sets
    3.   should be the tuning goal
    4.   is taking larger disk spaces for pages paged out
23. In MS-DOS 5.0, which is the number that acts as a code to uniquely identify the software product?
    
    1.   MS
    2.   DOS
    3.   MS DOS
    4.   5.0
24. Bug means
    
    1.   A logical error in a program
    2.   A difficult syntax error in a program
    3.   Documenting programs using an efficient documentation tool
    4.   All of the above
25. Memory management is :
    1.   not used in modern operating system
    2.   replaced with virtual memory on current systems
    3.   not used on multiprogramming systems
    4.   critical for even the simplest operating systems
26. The initial value of the semaphore that allows only one of the many processes to enter their critical sections, is
    1.   8
    2.   1
    3.   16
    4.   0
27. The Register - to - Register (RR) instructions
    1.   have both their operands in the main store.
    2.   which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, except in the case of store operation when it is also written into the specified storage location.
    3.   which perform indicated operations on two fast registers of the machine and leave the result in one of the registers.
    4.   all of the above
28. A page fault
    1.   is an error is a specific page
    2.   occurs when a program accesses a page of memory
    3.   is an access to a page not currently in memory
    4.   is a reference to a page belonging to another program
29. An algorithm is best described as
    1.   A computer language
    2.   A step by step procedure for solving a problem
    3.   A branch of mathematics
    4.   All of the above
30. The process of transferring data intended for a peripheral device into a disk (or intermediate store) so that it can be transferred to peripheral at a more convenient time or in bulk, is known as
    
    1.   multiprogramming
    2.   spooling
    3.   caching
    4.   virtual programming
31. Block caches or buffer caches are used
    1.   to improve disk performance
    2.   to handle interrupts
    3.   to increase the capacity of the main memory
    4.   to speed up main memory read operation
32. The action of parsing the source program into the proper syntactic classes is known as
    1.   syntax analysis
    2.   lexical analysis
    3.   interpretation analysis
    4.   general syntax analysis
33. Which, of the following is not true about the description of a decision table?
    1.   A decision table is easy to modify
    2.   A decision table is directly understood by the computer
    3.   A decision table is easy to understand
    4.   All of the above
34. Trojan-Horse programs
    1.   are legitimate programs that allow unauthorized access
    2.   do not usually work
    3.   are hidden programs that do not show up on the system
    4.   usually are immediately discovered
35. When did IBM release the first version of disk operating system DOS version 1.0?
    1.   1981
    2.   1982
    3.   1983
    4.   1984
36. Which of the following is false about disk when compared to main memory?
    
    1.   non-volatile
    2.   longer storage capacity
    3.   lower price per bit
    4.   faster
37. Producer consumer problem can be solved using
    
    1.   semaphores
    2.   event counters
    3.   monitors
    4.   all of the above
38. Most of the microcomputer's operating systems like Apple DOS, MS DOS and PC DOS etc. are called disk operating systems because
    
    1.   they are memory resident
    2.   they are initially stored on disk
    3.   they are available on magnetic tapes
    4.   they are partly in primary memory and partly on disk
39. The CPU, after receiving an interrupt from an I/O device
    1.   halts for a predetermined time
    2.   hands over control of address bus and data bus to the interrupting device
    3.   branches off to the interrupt service routine immediately
    4.   branches off to the interrupt service routine after completion of the current instruction
40. Seeks analysis
    
    1.   is used for analyzing paging problems
    2.   is used for analyzing device busy problems
    3.   is used for analyzing control-unit busy problems
    4.   is only shown on real-time displays
41. Which is a permanent database in the general model of compiler?
    1.   Literal Table
    2.   Identifier Table
    3.   Terminal Table
    4.   Source code
42. What is the name of the technique in which the operating system of a computer executes several programs concurrently by switching back and forth between them?
    
    1.   Partitioning
    2.   Multitasking
    3.   Windowing
    4.   Paging
43. Operating system
    1.   inks a program with the subroutines it references
    2.   provides a layered, user-friendly interface
    3.   enables the programmer to draw a flowchart
    4.   all of the above
44. Software that measures, monitors, analyzes, and controls real-world events is called:
    
    1.   system software
    2.   real-time software
    3.   scientific software
    4.   business software
45. The details of all external symbols and relocation formation (relocation list or map) is provided to linker by
    
    1.   Macro processor
    2.   Translator
    3.   Loader
    4.   Editor
46. The macro processor must perform
    1.   recognize macro definitions and macro calls
    2.   save the macro definitions
    3.   expand macros calls and substitute arguments
    4.   all of the above
47. A development strategy whereby the executive control modules of a system are coded and tested first, is known as
    1.   Bottom-up development
    2.   Top-down development
    3.   Left-Right development
    4.   All of the above
48. Which of the following is helpful in evaluating applications software what will best suit your needs?
    
    1.   recommendations by other users
    2.   computer magazines
    3.   objective software reviews
    4.   all of the above
49. What problem is solved by Dijkstra's banker's algorithm?
    1.   mutual exclusion
    2.   deadlock recovery
    3.   deadlock avoidance
    4.   cache coherence
50. The dispatcher
    1.   actually schedules the tasks into the processor
    2.   puts tasks in I/O wait
    3.   is always small and simple
    4.   never changes task priorities