## B.Sc. CSIT Model Question 2080

**Tu IOST** Update **Course number** and Provided **Model Question for CSIT Student for 2080 1st semester Students**.

Here You Can **Find the Complete Model Questions** and we will try to upload Solution of these questions.

**Table of Content:**

### Introduction to Information Technology

*Candidates are required to give answers in their own words and as far as practicable.*

#### Section A

*Attempt any two questions. (2 × 10 = 20)*

1. What is Operating System? Discuss different functions of operating system in details. (2+8)

2. Why do we need computer network? Discuss different types of network topologies along with their merits and demerits. (3+7)

3. What are the benefits of storing data using database? Discuss three levels of database system architecture in details. (3+7)

#### Section B

*Attempt any eight questions. (8*5=40)*

4. Discuss characteristics of third generation of computers. Compare it with fourth generations. (3+2)

5. Discuss the components of CPU in brief. (5)

6. What is primary memory? Discuss different types of primary memory. (1+4)

7. Define hard-copy and soft-copy output. Differentiate between impact and non-impact printers with examples. (2+3)

8. Convert (AF7)16 to binary. Subtract (1001101)2 from (1100011)2. (2+3)

9. Define IP address with examples. What are the benefits of using domain name? (2+3)

10. What are the characteristics of multimedia? Discuss. (5)

11. Define Cryptography. Discuss public key cryptography in detail. (1+4)

12. Write short notes on: (2*2.5=5)

a. Big Data

b. E-governance

### C Programming

Tribhuvan University

Institute of Science and Technology

2080

Bachelor Level / First Year / First Semester Full Marks: 60

Computer Science and Information Technology (CSC115) Pass Marks: 24

(C Programming) Model Question Time: 3 hours

*Candidates are required to give answers in their own words and as far as practicable.*

#### Section A

*Attempt any two questions. (2 × 10 = 20)*

1. Define function and list its advantages. Describe the difference between passing arguments by value and passing arguments by address with suitable program. (4+6)

2. Explain how structure is different from union? Make a program using structure of booklist having data member's title, author, and cost. Enter four data and calculate total cost. (3+4+3)

3. Explain various modes in which file can be opened? Write a program to CREATE and WRITE N numbers in a file "NUMBER.TXT". Open this file then read its contents and put all even numbers in one file "EVEN.TXT" and odd numbers in another file "ODD.TXT". (2+4+4)

#### Section B

*Attempt any eight questions. (8*5=40)*

4. What do you mean by a problem analysis? What are the properties of a good algorithm? Explain the Compilation and Execution of any C Program? (1+1+3)

5. Define nested if else statements with suitable flowchart. Write a C code to check if user given input is exactly divisible by 5 or 11 using nested if else statements? (2+3)

6. List various binary and unary operators used in C? write a program that uses a "while" loop to compute and prints the sum of a given numbers of squares. For Examples, if 4 is input, then the program will print 30, which is equal to 1^2+2^2+3^2+4^2. (1+4)

7. "Size of character array is always declared one more than the input size." Justify the statement. Write a program to read a character array input as "TRIBHUVAN UNIVERSITY" from the user and find out how many times a character "I" occurs in that array? (1+4)

8. Write syntax to declare and initialize 2-dimensional array? With suitable program logic explain how would you find a transpose of a 3*3 matrix? (1+4)

9. Explain the concepts of recursive function using the example program to find the factorial of given positive integer. (5)

10. Describe the fundamental concepts of pointer and its arithmetic with suitable examples. (5)

11. Explain the use of graphical functions. Write a program to draw a triangle using line() graphics function.

12. Write short notes on:

i) Dynamic Memory Allocation

ii) break and continue

### Digital Logic

*Candidates are required to give answers in their own words and as far as practicable.*

#### Section A

*Attempt any two questions. (2 × 10 = 20)*

1. Implement the following function F= E(0,1,3,4,7)

a) Decoder

b) Multiplexer

c) PLA

2. Differentiate between Synchronous and asynchronous sequential circuit. Design a counter as shown in the state diagram below.

3. Explain different types of shift registers with necessary diagrams.

#### Section B

*Attempt any eight questions. (8*5=40)*

4. Convert (2AC5)16 to decimal, octal and binary.

5. What do you mean by encoder? Design 3 to 8 line encoder.

6. Design a combinational circuit that multiplies 2-bit numbers, ala0 and b1b0 to produce a 4-bit product, c3c2c1c0. Use AND gates and half-adders.

7. Design a circuit which produces 2's complement of the given four bit binary digit.

8. Implement full adder using decoder with truth table and logic diagram.

9. Design a circuit that produces the square of three bit number using ROM?

10. Use K-map to simplify the given function in POS. Implement the simplified function using 2-input NOR-NOR gate only.

F = M (0, 1, 2, 9, 10, 11, 14)

And with don't care conditions D = M (7, 8, 12)

11. Discuss race condition in J-K Flip Flop and methods to overcome it.

12. Write Short notes on (Any two)

a) Coding system in logic design

b) Error-detection code

c) Universal Gates

### Mathematics I

Tribhuvan University

Institute of Science and Technology

2080

Bachelor Level / First Year / First Semester Full Marks: 60

Computer Science and Information Technology (MTH117) Pass Marks: 24

(Mathematics I) Model Question Time: 3 hours

*Candidates are required to give answers in their own words and as far as practicable.*

#### Section A

*Attempt any two questions. (2 × 10 = 20) *

#### Section B

*Attempt any eight questions. (8 × 5 = 40)*

### Physics

*Candidates are required to give answers in their own words and as far as practicable.*

#### Section A

*Attempt any two questions. (2 × 10 = 20)*

1. What do you mean by the equilibrium current across the pn junction? Use Fermi-Dirac statistics and Maxwell-Boltzmann distribution to show the flow of electrons from n to p is equal to the flow from p to n. How electron current form p to n (that is, associated with minority carriers) is not affected by the height of the potential energy barrier? Explain. (10)

2. Set up differential equations for an oscillation of a spring using Hooke's and Newton's second law. Find the general solution of this equation and hence the expressions for period, velocity and acceleration of oscillation. (10)

3. Set up Schrodinger equation for Hydrogen atom using spherical polar coordinates and separate radial and angular part of this equation. Without solving radial and angular equations, discuss the quantum numbers associated with these. (10)

#### Section B

*Attempt any eight questions. (8*5=40)*

4. Explain Hall effect and discuss the importance of Hall voltage while manufacturing electronic devices. (5)

5. What do you mean by Bloch theorem? Discuss its use in Kronig-Penny model and hence in band theory. (5)

6. Describe the following process of IC production: (a) Oxidation, (b) Pattern definition, and (c) Doping. (5)

7. A given spring stretches 0.1 m when a force of 20 N pulls on it. A 2-kg block attached to it on a frictionless surface it pulled to the right 0.2 m and released. (a) What is the frequency of oscillation of the block? (b) What is its velocity at the midpoint? (c) What is its acceleration at either end? (d) What are the velocity and acceleration when x=0.12m, on the block's first passing this point? (5)

8. Two large parallel plates are separated by a distance of 5 cm. The plates have equal but opposite charges that create an electric field in the region between the plates. An a particle (q = 3.2 x 10^-19 C, m = 6.68 x 10^-27 kg) is released from the positively charged plate, and it strikes the negatively charged plate 2 x 10^-6 sec later. Assuming that the electric field between the plates is uniform and perpendicular to the plates, what is the strength of the electric field? (5)

9. What are (a) the energy, (b) the momentum, and (c) the wavelength of the photon that is emitted when a hydrogen atom undergoes a transition from the state n = 3 to n = 1? (5)

10. For a free quantum particle show that the wave function, ψ(x,t) = Acoskx e^-iwt satisfies the time dependent Schrodinger equation. (5)

11. Copper has a face-centered cubic structure with a one-atom basis. The density of copper is 8.96 g/cm3 and its atomic weight is 63.5 g/mole. What is the length of the unit cube of the structure? (5)

12. The output of a digital circuit (v) is given by this expression:

y = (AB+CA) (B+C)

You Can Check **CSIT First Semester Syllabus** as Below: