(XI) C.Sc. Science - 2079 Morning
Group "A"
Choose the best answer. [9×1=9]
1. ICs were used in ..... generation
a. First b. Third
c. Second d. Fourth
2. Data entered through the input device is temporarily stored in ......
a. RAM b. CPU
c. ROM d. Hard Disk
3. The binary digits 0 and 1, which are basic units of memory are called .....
a. bits b. nibble
c. byte d. all of above
4. Which of the following is not an example of an octal number system?
a. 345 b. 123
c. 678 d. 347
5. Which of the following is not an Operating system?
a. UNIX b. MS-DOS
c. LINUX d. PASCAL
6. Statistical calculations and preparation of tables and graphs can be done using
a. Adobe Photoshop b. Excel
c. Notepad d. Power Point
7. The format specifier for string is
a. %d b. %f
c. %s d. %c
8. What would be the output?
int main()
{
int a=5,b=6;
printf("%d",(a>b)+1);
return 0;
}
a. 56 b. 65
c. 0 d. 1
9. The program written by us, when compiled, it is converted into
a. assembler language b. machine language
c. english language d. nepali language
Group "B"
Short answer questions. [5×5=25]
10. Differentiate between Impact and non-impact printers. [5]
11. What is firmware? Write features of the third generation of computer. [2+3]
OR
Simplify and draw a digital circuit/diagram of following. [2+2+1]
PQR+QR+R’
12. Convert the following: [1+1+3]
a. (ABC) 16 to (?) 2
b. (2040) 8 to (?) 10
c. Subtract 1111 from 1100 using 2’s complement.
13. What is an Operating System? Explain any three functions of Operating systems.
[2+3]
14. What is Spreadsheet? Explain some uses of spreadsheet. [1+4]
OR
Write a program to input a number and check whether it is even or odd. [5]
Group "C"
Long answer questions. [8×2=16]
15. Draw a block diagram of the computer system and explain its units (control, arithmetic & logic unit and memory). [2+6]
OR
Define Boolean algebra. Explain about NOT, NAND and NOR gates in
detail. [2+6]
16. a. Explain about Relational operators. [4]
b. Write a program input marks in five subjects and find total with
percentage. [4]
(XI) C.Sc. Science - 2079 Day
Group "A"
Choose the best answer. [9×1=9]
1. Parallel port transfers a bits
a) A bit at a time b) Multiple bits at once
c) None of them d) 2 bytes
2. The requested data is not found by CPU at a given memory level called as
a) Miss b) Hit
c) Hit rate d) Miss rate
3. The use of the IC in computer has ...........
a) Increased the amount of heating
b) Reduced the size and cost of the computer
c) Reduced the peripheral devices to be used
d) Reduced the performance capacity of the computer
4. The primary purpose of an operating system is
a) Productivity maximization b) Coding
c) Testing d) Maintenance
5. The simplified form the expression using Boolean algebra: C(B+C) (A+B+C)
a) A+B b) B+A
c) C d) A
6. Every code execution begins from which of the following function
a) main() b) User defined function
c) Getchar() d) printf()
7. If a=2, b=3 and c=6, then a
