[ For Rough Work Only ] Roll No.
Set- 3
Code No. SKVM/HY/18-19/11/CS/083
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Please check that this question paper consist of 7 questions.
15 minutes has been allotted to read the question paper.
Computer Science (Theory)
ननननननननन ननन : 3 नननन
नननननन ननन : 70
Time allowed: 3hours Maximum marks: 70
General Instructions:
1. The question paper consists of two sections A and B
2. It is compulsory to mention on the page 1 in the answer book whether
you are attempting SECTION A or SECTION B.
3. All questions are compulsory within each section.
4 Each question consists of several questions, Check them carefully.
SECTION-A
Q1. a) Who first proposed the concept of ‘Stored Program
Computer’? [1]
b) Compare the salient features of first and second
generation computers. [2]
c) Explain the functional components of a computer
with the help of a block diagram. [2]
d) Explain booting process and its types. [3]
e) Differentiate between :
i) Digital computers and analog computers.
ii) Microcomputers and Mini Computers [4]
Q2. a) Where are the instructions needed to start a computer Section-B
is stored? [1] Q5. a) What is an operating system? Write names of any
b) Name at least four early calculating devices. [2] two popular operating systems of mobile phones. [2]
c) Why is Charles Babbage known as the ‘Father of b) What is the difference between an Open source
Modern Computers’? [2] Software and a Freeware. Write 2 examples of each. [2]
d) ‘Hardware is of no use without software and software c) What is utility software? [1]
cannot be used without hardware.’ Explain. [3] d) What was the name of first personal computer virus? [1]
e) What are Boot Sector virus and Trojan Horse Virus? [2]
e) Differentiate between: [4]
(i) An interpreter and a compiler.
(ii) Priority Scheduling and Round Robin Scheduling Q6. a) What is Antivirus Software? Write the name
of any 4 antivirus software’s. [2]
b) What is a ‘School management System’? [2]
Q3. a) What does ASCII stand for? [1]
c) Who has written the language ‘Python’? [1]
b) How are Freeware and Free Software different? [2] d) List the uses of Internet in various fields? [3]
c) Explain the major functions of an operating system. [3]
Q7. a) Convert the Decimal number to its Binary equivalent. [1]
i) (781)10 ii) (1024)10
b) Convert Binary number to its decimal equivalent. [2]
Q4. a) What is a Nibble? [1] i) (101101.001)2 ii) (101101.110)2
b) Define instruction set and word length of a c) Solve the following Binary Numbers calculations. [2]
i) 1 1 0 0 1 1 1 ii) 1 0 1 0 1 0
Microprocessor. [2]
+ 01001 -1011
c) Why do we use secondary storage? Name any two
secondary storage devices. [2] d) Convert the Decimal number to its Octal equivalent. [2]
d) Differentiate between Buffering and Spooling. [2] i) (700)10 ii) (320)10
e) What is the purpose of Cache memory? What is the
e) Convert the Decimal to its Hexadecimal Equivalent. [1]
difference between L1 Cache and L2 Cache? [3] i) (2048)10
f) Differentiate between CISC and RISC processors. [4] f) Convert the Hexa-decimal to its Decimal equivalent. [2]
i) 5AF ii) 7AD
