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Q1. A base register table
(A) Allows the programmer to write base registers and displacements explicitly in the source program
(B) Is used to remember which of the general-purpose registers are currently available as base registers, and what base addresses they contain
(C) Allows multiple programs to reside in separate areas of core at the same time
(D) Is a term that refers to the control programs of an operating system
Answer: (B) Is used to remember which of the general-purpose registers are currently available as base registers, and what base addresses they contain
Q2. The most common security failure is
(A) Carelessness by users
(B) Depending on passwords
(C) Too much emphasis on preventing physical access
(D) Insufficient technology used to prevent breaches
Answer: (A) Carelessness by users
Q3. Terminal Table
(A) Contains all constants in the program
(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 of 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: (D) A permanent table which lists all key words and special symbols of the language in symbolic form
Q4. Under virtual storage,
(A) A single program is processed by two or more CPUs
(B) Two or more programs are stored concurrently in primary storage
(C) Only the active pages of a program are stored in primary storage
(D) Inter-program interference may occur
Answer: (C) Only the active pages of a program are stored in primary storage
Q5. In a magnetic disk, data is recorded in a set of concentric tracks which are subdivided into
(A) Periods
(B) Sectors
(C) Zones
(D) Groups
Answer: (B) Sectors
Q6. Which of the following instruction steps, would be written within the diamond-shaped box, of a flowchart?
(A) S = B – C
(B) IS A<10
(C) PRINT A
(D) DATA X, 4Z
Answer: (B) IS A<10
Q7. Supervisor state is
(A) Never used
(B) Entered by programs when they enter the processor
(C) Required to perform any I/O
(D) Only allowed to the operating system
Answer: (D) Only allowed to the operating system
Q8. Which of the following functions is(are) performed by the loader
(A) Allocate space in memory for the programs and resolve symbolic references between object decks
(B) Adjust all address dependent locations, such as address constants, to correspond to the allocated space
(C) Physically place the machine instructions and data into memory
(D) All of the above
Answer: (D) All of the above
Q9. Addressing structure
(A) Defines the fundamental method of determining effective operand addresses
(B) Are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing
(C) Performs indicated operations on two fast registers of the machine and leave the result in one of the registers
(D) None of the above
Answer: (A) Defines the fundamental method of determining effective operand addresses
Q10. The LRU algorithm
(A) Pages out pages that have been used recently
(B) Pages out pages that have not been used recently
(C) Pages out pages that have been least used recently
(D) Pages out the first page in a given area
Answer: (C) Pages out pages that have been least used recently
Q11. Scheduling is
(A) Allowing jobs to use the processor
(B) Unrelated to performance consideration
(C) Not required in uniprocessor systems
(D) The same regard-less of the purpose of the system
Answer: (A) Allowing jobs to use the processor
Q12. The file structure that redefines its first record at a base of zero uses the term:
(A) Relative organization
(B) Key fielding
(C) Dynamic reallocation
(D) Hashing
Answer: (A) Relative organization
Q13. When a computer is first turned on or restarted, a special type of absolute loader is executed, called a
(A) “Compile and Go” loader
(B) Boot loader
(C) Bootstrap loader
(D) Relating loader
Answer: (C) Bootstrap loader
Q14. What is the initial value of the semaphore to allow only one of the many processes to enter their critical section?
(A) 8
(B) 1
(C) 16
(D) None of the above
Answer:(B) 1
Q15. In which addressing mode the operand is given explicitly in the instruction?
(A) Absolute mode
(B) Immediate mode
(C) Indirect mode
(D) Index mode
Answer: (B) Immediate mode
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