TRB-CS-VIP ONLINE COACHING CENTER (QUIZ-1)OPERATING SYSTEM

TRB-CS-Master online coaching center (QUIZ-8)Operating System

Quiz

 

1. Information in a memory that is no longer valid or wanted is known as
   1.   non-volatile
   2.   volatile
   3.   surplus
   4.   garbage
2. Which of the following filename extension suggests that the file is a backup copy of another file?
   1.   TXT
   2.   COM
   3.   BAS
   4.   BAK
3. Relocation bits used by relocating loader are specified (generated) by
   1.   Relocating loader itself
   2.   Linker
   3.   Assembler or translator
   4.   Macro processor
4. Nonmodifiable procedures are called
   1.   serially usable procedures
   2.   concurrent procedures
   3.   reentrant procedures
   4.   topdown procedures
5. . The instruction register
   1.   A. 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".
6. Which of the following scheduling objectives should be applied to the following: the system should admit jobs to create a mix that will keep most devices busy
   1.   to be fair
   2.   to balance resource utilization
   3.   to obey priorities
   4.   to be predictable
7. Multiprogramming systems:
   1.   are easier to develop than single programming system
   2.   execute each job faster
   3.   execute more jobs in the same time period
   4.   are used only on large mainframe computers
8. In an absolute loading scheme, which loader function is accomplished by assembler.
   1.   Reallocation
   2.   Allocation
   3.   Linking
   4.   Loading
9. . A task in a blocked state
   1.   is executable
   2.   is executable
   3.   is executable
   4.   is executable
10. System maintenance:
    1.   is usually not necessary
    2.   is necessary on all systems, regardless of how good
    3.   is not required if the system is well written
    4.   always requires several programs
11. Which of the following statements is not true about the FORTRAN language?
    1.   FORTRAN is a high level language
    2.   A FORTRAN program, written for the IBM-PC, is totally different from a FORTRAN program written for execution on the SUN machine
    3.   FORTRAN is extensively used to write programs for performing scientific computations
    4.   All of the above
12. A linker
    
    1.   creates a load module
    2.   is not necessary with variable partitions
    3.   must be run after the loader
    4.   is not needed with a good compiler
13. . Uniform Symbols Table
    1.   contains all constants in the program
    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 of 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.
14. In which of the storage placement strategies a program is placed in the smallest available hole in the main memory?
    1.   best fit
    2.   first fit
    3.   worst fit
    4.   worst fit
15. In which addressing mode, the effective address of the operand is generated by adding a constant value to the contents of register?
    1.   absolute mode
    2.   indirect mode
    3.   immediate mode
    4.   index mode
16. If special forms are needed for printing the output, the programmer specifies these forms through?
    1.   JCL
    2.   JPL
    3.   Utility programs
    4.   Load modules
17. Which policy replace a page if it is not in the favoured subset of a process's pages?
    1.   FIFO
    2.   LRU
    3.   LFU
    4.   Working set
18. Which of the following can be accesses by transfer vector approach of linking?
    1.   External data segments
    2.   External subroutines
    3.   Data located in other procedures
    4.   All of the above
19. Which of the following terms refers to the degree to which data in a database system are accurate and correct?
    
    1.   data security
    2.   data validity
    3.   data independence
    4.   data integrity
20. In analyzing the compilation of PL/I program, the term "Syntax 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

TRB-CS-VIP ONLINE COACHING CENTER (QUIZ-2)OPERATING SYSTEM

TRB-CS-Master online coaching center (QUIZ-7)Operating System

Quiz

 

1. In analyzing the compilation of PL/I program, the description "resolving symbolic address (labels) and generating machine language" is associated with
   1.   Assembly and output
   2.   Code generation
   3.   Storage assignment
   4.   Syntax analysis
2. Round-robin scheduling
   
   1.   allows interactive tasks quicker access to the processor
   2.   is quite complex to implement
   3.   gives each task the same chance at the processor
   4.   allows processor-bound tasks more time in the processor
3. What is the name of the system which deals with the running of the actual computer and not with the programming problems?
   
   1.   Operating system
   2.   Systems program
   3.   Object program
   4.   Source program
4. What is the initial value of the semaphore to allow only one of the many processes to enter their critical section?
   
   1.   8
   2.   1
   3.   16
   4.   0
5. Four necessary conditions for deadlock to exist are: mutual exclusion, no-preemption, circular wait and
   
   1.   hold and wait
   2.   deadlock avoidance
   3.   race around condition
   4.   buffer overflow
6. If you do not know which version of MS-DOS you are working with, which command will you use after having booted your operating system?
   
   1.   FORMAT command
   2.   DIR command
   3.   VER command
   4.   DISK command
7. A partitioned data set is most used for
   
   1.   a program or source library
   2.   storing program data
   3.   storing backup information
   4.   storing ISAM files
8. Page-map table is
   
   1.   A data file
   2.   A directory
   3.   Used for address translation
   4.   All of the above
9. The main function of the dispatcher (the portion of the process scheduler) is
   
   1.   swapping a process to the disk
   2.   assigning ready process to the CPU
   3.   suspending some of the processes when the CPU load is high
   4.   bring processes from the disk to the main memory
10. The errors that can be pointed out by the compiler are
    
    1.   Syntax errors
    2.   Semantic errors
    3.   Logical errors
    4.   Internal errors
11. When a computer is first turned on or restarted, a special type of absolute loader is executed, called a
    
    1.   "Compile and Go" loader
    2.   Boot loader
    3.   Bootstrap loader
    4.   Relating loader
12. Which, of the following checks, cannot be carried out on the input data to a system?
    
    1.   consistency check
    2.   Syntax check
    3.   Range check
    4.   All of the above
13. A program that converts a high-level language program to a set of instructions that can run on a computer is called a
    
    1.   Compiler
    2.   Debugger
    3.   Editor
    4.   All of the above
14. Which of the following is characteristic of an operating system?
    
    1.   resource management
    2.   error recovery
    3.   memory management
    4.   All the above
15. In MS-DOS, relocatable object files and load modules have extensions
    
    1.   .OBJ and .COM or .EXE, respectively
    2.   .COM and .OBJ, respectively
    3.   .EXE and .OBJ, respectively
    4.   .DAS and .EXE, respectively
16. The state transition initiated by the user process itself in an operating system is
    
    1.   block
    2.   dispatch
    3.   wake up
    4.   timer run out
17. 142 . Which of the following program is not a utility?
    
    1.   Debugger
    2.   Editor
    3.   Spooler
    4.   All of the above
18. The function(s) of file system is (are):
    
    1.   to provide complete file naming freedom to the users and to permit controlled sharing of files
    2.   to provide for long and short term storage of files with appropriate economic tradeoffs.
    3.   to provide security against loss of information due to system failure
    4.   all of the above
19. A public key encryption system
    
    1.   allows anyone to decode the transmission
    2.   allows only the correct sender to decode the data
    3.   allows only the correct receiver to decode the data
    4.   does not encode the data before transmitting it
20. . Feed back queue
    
    1.   are very easy to implement
    2.   dispatch tasks according to execution characteristics
    3.   are used to favor real-time tasks
    4.   require manual intervention to implement properly
21. . In which addressing mode the operand is given explicitly in the instruction?
    
    1.   absolute mode
    2.   immediate mode
    3.   indirect mode
    4.   index mode
22. . The technique, for sharing the time of a computer among several jobs. Which switches jobs so rapidly such that each job appears to have the computer to itself:
    
    1.   time sharing
    2.   time out
    3.   time domain
    4.   FIFO
23. Capacity planning
    
    1.   requires detailed system performance information
    2.   is independent of the operating system
    3.   does not depend on the monitoring tools available
    4.   is not needed in small installations
24. . Poor response times are caused by
    
    1.   Processor busy
    2.   High I/O rate
    3.   High paging rates
    4.   Any of the above
25. Link encryption
    
    1.   is more secure than end-to-end encryption
    2.   is less secure than end-to-end encryption
    3.   can not be used in a public network
    4.   is used only to debug