Objective Questions - Computer Fundamentals for Computer Operator
Objective Questions with Solutions from Computer Fundamentals for Computer Operator Exam conducted by Lok Sewa Ayog (Public Service Examination), Nepal
Questions
1. Software in computer
a. enhance the capabilities of the hardware machine
b. increase the speed of central processing unit
c. Both of the above
d. Nome of the above
2. Microprocessors can be used to make?
a. Computers
b. Digital Systems
c. Calculators
d. All of above.
3. Machine language is
a. Machine dependent
b. Difficult to program
c. Error prove
d. All of the above
4. The translation program used in assembly language is called
a. computer
b. Interpreter
c. Assembler
d. translator
5. Which of the following is not computer language?
a. High level language
b. Medium level language
c. Low level language
d. All of the above
6. A floppy disk contains
a. Circular tracks only
b. Sectors only
c. Both circular tracks and sectors
d. All of the above
7. The octal equivalent of 111010 is
a. 81
b. 72
c. 71
d. None of above
8. The first electronics computer in the world was
a. UNIVAC
b. EDVAC
c. ENIAC
d. All of above
9. Which statement is valid about interpreter?
a. It translates one instruction at a time
b. Object code is saved for future use
c. Repeated interpretation is not necessary
d. All of the above
10. Which language is directly understood by the computer without translation program?
a. Machine language
b. Assembly language
c. High level language
d. None of the above
11. Which is the limitation of high level language?
a. Lower efficiency
b. Machine dependent
c. Machine level coding
d. None of the above
12. Mnemonic a memory trick is used in which of the following language
a. Machine language
b. Assembly language
c. High level language
d. None of the above
13. Instruction in computer language consists of
a. OPCODE
b. OPERAND
C. both of the above
d. None of the above
14. Which of the following is called low level languages?
a. Machine language
b. Assembly language
c. Both of the above
d. None of the above
15. Which of the following is problem oriented languages?
a. High level language
b. Machine language
c. Assembly language
d. Low level language
16. Which was the computer conceived by Babbage?
a. Analytical Engine
b. Arithmetic Machine
c. Donald Kunuh
d. All of above
17. Offline device is
a. a device which is not connected to CPU
b. a device which is connected to CPU
c. a direct access storage device
d. an I/O device
18. Easily readable language is
a. Machine language
b. assembly language
c. High level language
d. Medium level language
19. A compiler is a translating program which
a. Translates instruction of a high level language into machine language
b. Translates entire source program into machine language program
c. It is not involved in program's execution
d. All of the above
20. A Computer programmer
a. does all the thinking for a computer
b. can enter input data quickly
c. can operate all types of computer equipment
d. can draw only flowchart.
21. Which of the following is machine independence program?
a. High level language
b. Low level language
c. Assembly language
d. Machine language
22. High level language is also called
a. Problem oriented language
b. Business oriented language
c. Mathematically oriented language
d. All of the above
23. CD-ROM is a
a. Semiconductor memory
b. Memory register
c. Magnetic memory
d. None of the above
24. Which of the following is a secondary memory device?
a. Keyboard
b. Disk
c. ALU
d. All
25. Which of the following is not a primary6 storage device?
a. Magnetic tape
b. Magnetic disk
c. Optical disk
d. None of the above
26. A name or number used to identify a storage location device?
a. A byte
b. A record
c. An address
d. All of the above
27. Which of the following registers is loaded with the contents of the memory location pointed by the PC?
a. Memory Address Register
b. Memory Data Register
c. Instruction Register
d. Program Counter
28. The difference between memory and storage is that memory is …… and storage is ……..
a. Temporary, permanent
b. permanent, temporary
c. slow, fast
d. all of the above
29. The most commonly used standard data code to represent alphabetical, numerical and punctuation characters used in Electronic Data Processing System is called
a. ASCII
b. EBCDIC
c. BCD
d. All of above
30. Which of the following registers is used to keep track of address of the memory location where the next instruction is located?
a. Memory address register
b. Memory data register
c. Instruction Register
d. Program Counter
Answers:
1. Software in computer
a. enhance the capabilities of the hardware machine
[Hardware can do nothing without the instructions to it. A computer, unlike calculator or any other electronic device, is a programmable machine. This means the same machine can be made to work different tasks with the help of software. Thus software specify the capabilities of hardware.]
2. Microprocessors can be used to make?
d. All of above.
[Computers, Digital Systems, Calculators all use microprocessors to perform their tasks
3. Machine language is
d. All of the above
[Machine language is the native language of computers consisting of bits only. Thus it is very difficult for programmers to write program in machine language. So, mistakes and errors are very possible. Moreover, a program written for one machine can not be used in another machine. Thus it is machine dependent too]
4. The translation program used in assembly language is called
c. Assembler
[Compiler and interpreter are the language translators of high level language. First one is to create object program and second one to translate and execute line by line. Thus it is Assembler only that is used to translate assembly language into machine codes.]
5. Which of the following is not computer language?
b. Medium level language
[There are only two levels of programming languages – high and low. Machine language and Assembly language are low level language and other are high level language. There is no medium level language.]
6. A floppy disk contains
c. Both circular tracks and sectors
[All of the disks are structured into tracks and sectors to make storing possible when formatting. Sectors only or tracks only cannot locate data on disk.]
7. The octal equivalent of 111010 is
d. None of above
[1x2^5 + 1x2^4 + 1x2^3 + 0x2^2 + 1x2^1 + 0x2^0 = 32 + 16 + 8 + 0 + 2 + 0 = 58 ]
8. The first electronics computer in the world was
c. ENIAC
[Electronic Numerical Integrator and Calculator]
9. Which statement is valid about interpreter?
a. It translates one instruction at a time
[Interpreter translates one instruction and lets CPU to execute it before converting another instruction. The translated code is not saved, so, needs to be translated again to run for successive times.]
10. Which language is directly understood by the computer without translation program?
a. Machine language
[Machine language is computer’s native language, so its not needed to translate. Assembly language and high level languages are developed so as to make programmers easy in developing programs that must be converted to machine codes before executing]
11. Which is the limitation of high level language?
a. Lower efficiency
[High level language is less efficient compared to the machine level language. Because machine language programs are written specifically for that particular machine are more efficient and run faster; but many compromises needed using high level language for ease, machine independency and productivity.]
12. Mnemonic a memory trick is used in which of the following language
b. Assembly language
[Assembly language appeared to make it easier to write programs. These programs were neither machine codes nor words and mathematical notations, called mnemonic]
13. Instruction in computer language consists of
C. both of the above
[OPCODE tells computer what operation to perform on OPERANDS, thus, instruction in computer language consists both of above]
14. Which of the following is called low level languages?
c. Both of the above
[Machine language and assembly language both are low level language. All other languages are high level language]
15. Which of the following is problem oriented languages?
a. High level language
[Machine language and assembly language were machine dependent and machine oriented. Programs were developed to provide functionality to the machine. You needed to write a program that is possible to the particular machine. But, due to the development in computers and programming practices you could write a program that run on any machine led way to programmers to focus upon the problem on which they are writing programs not on the machine for which program is developed]
16. Which was the computer conceived by Babbage?
a. Analytical Engine
[Babbage developed Difference Engine and demonstrated in Royal Society. After its success he aimed at further developing more powerful machine called Analytical Engine. His concept of Analytical Engine was successfully developed as test after a century of his death.]
17. Offline device is
a. a device which is not connected to CPU
[Devices which are connected to CPU are called online devices]
18. Easily readable language is
c. High level language
[High level language uses English words and mathematical notations which is far more readable than machine codes or mnemonics]
19. A compiler is a translating program which
b. Translates entire source program into machine language program
[Interpreters also convert high level program into machine codes but the difference is compiler translates entire source program into machine language program and interpreter translates each instruction in turn]
20. A Computer programmer
a. does all the thinking for a computer
[A computer processes everything according to the program provided. Thus a computer programmer must do all the thinking of a computer]
21. Which of the following is machine independent program?
a. High level language
[Low level language whether assembly or machine language is machine dependent. You can to run a program written for a computer on another. High level language programs can be compiled considering the target machine, this is machine independent.]
22. High level language is also called
d. All of the above
[Machine language and assembly language were machine dependent and machine oriented. Programs were developed to provide functionality to the machine. You needed to write a program that is possible to the particular machine. But, due to the development in computers and programming practices you could write a program that run on any machine led way to programmers to focus upon the problem on which they are writing programs not on the machine for which program is developed. Thus programming became business process oriented, mathematically oriented tasks.]
23. CD-ROM is a
d. None of the above
[CD-ROM is an optical storage device. Memory chips are semiconductor memory. CDROM is neither registers nor uses any magnetic mechanism to operate. Thus none of the provided options are correct.]
24. Which of the following is a secondary memory device?
b. Disk
[Keyboard and ALU are not memory device. Secondary memory means permanent storage like hard disks, floppy disks, CD-ROMS, DVDs etc.]
25. Which of the following is not a primary storage device?
d. None of the above
[All three options provided are secondary devices. RAM, ROM chips are the only primary device]
26. A name or number used to identify a storage location device?
c. An address
27. Which of the following registers is loaded with the contents of the memory location pointed by the PC?
c. Instruction Register
[PC is Program Counter that points to the instruction which has to run after the completion of current instruction.]
28. The difference between memory and storage is that memory is …… and storage is ……..
a. Temporary, permanent
29. The most commonly used standard data code to represent alphabetical, numerical and punctuation characters used in Electronic Data Processing System is called
d. All of above
[All of the three options provided are standard data codes]
30. Which of the following registers is used to keep track of address of the memory location where the next instruction is located?
d. Program Counter
[Program counter points to the next instruction to execute after the completion of current statement]
Best of Luck!
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