1 puc computer science question bank with answers pdf
District
level I PUC Annual Examination Feb – Mar – 2014
3 hrs 15
mins sub: COMPUTER SCIENCE (41) max. marks: 70
PART – A
i)
Answer all the following questions. 10 x 1= 10
ii)
Each question carries ONE mark.
1) Who is called as father of Computer?
Ans: Charles Babbage is called as father of
Computer.
2) What does mouse stand for?
Ans: Mechanically Operated User Serial Engine.
3) Define coding.
Ans: writing actual program in any programming
language is called coding.
4) What is an identifier?
Ans: identifier is a name given to the programming
elements such as variable, array, function etc.
5) Give the header file that holds
setw() and endl.
Ans: <iomanip.h>
6) Define the term looping.
Ans: looping is a process of repeatedly executing
certain set of instructions until certain condition is satisfied.
7) Give the syntax of one-dimensional
array.
Ans: data_type array_name [size];
8) What does the keyword void
represent?
Ans: keyword void specifies nothing.
9) What is a header in MS-Word?
Ans: header is used to maintain the consistency of
the document.
10) How to include a formula in a
worksheet?
Ans: begin typing “=” followed by name of the
formula.
PART – B
i)
Answer any FIVE of the following questions. 5 x 2 = 10
ii)
Each question carries TWO marks.
11)
Explain the role of computer in education.
Ans: the computers are implemented in the schools
for the creation of school ID card, which contains the details of the student.
The creation of marks card, attendance, learning the subject with audio and
video and fees collection so on.
12)
Give the different types of ROM.
Ans: PROM, EPROM, EEPROM
13)
Differentiate between interpreter and compiler.
Ans:
|
Interpreter |
Compiler |
|
1.
Interpreter converts source program into object code line by line. |
1.
Compiler converts whole source program into object code at a time. |
|
2.
Interpreter is slower. |
2.
Compiler is faster. |
|
3.
Interpreter takes less amount of memory. |
3.
Compiler takes more amount of memory. |
14)
What are the different characteristics of an algorithm?
Ans: input, definite, effective, terminate, output.
15) Mention any two applications of OOP.
Ans: - object oriented databases.
- Hypermedia, expert text and
hypertext.
- Artificial intelligence and expert
systems.
- Decision support systems and office
automation systems.
- Parallel programming and neural
nrtworks.
- CAD, CAM, CIM systems.
- Simulation and modeling.
16)
What are the simple data types of C++?
Ans: int ,char, float, double and void are the
simple data types of C++.
17)
Mention any two character manipulation functions.
Ans: isalpha(), isdigit(), isalnum(), isupper(),
islower().
18)
Give any two advantages of Word processors.
Ans: advantages of word processor
- Word processors are used to write
application letter, appointment order, resignation letter, memos etc.
- Word processors are used to
represent the statistical data in a graphical representation in the form of
charts.
PART – C
i)
Answer any FIVE of the following questions. 5 x 3 = 15
ii)
Each question carries THREE marks.
19)
Give the applications of OCR.
Ans: - OCR permits the direct reading of any printed
character without any special ink.
- With OCR, a user can scan a page
from a book.
- The computer will recognize the
characters in the page as letters and punctuation marks, and stores. This can
be edited using a word processor.
20)
Mention the features of UNIX operating system.
Ans: - portability.
-
Multiuser
and multitasking support.
-
Hierarchical
file organization.
-
Machine
independent.
-
Excellent
tools mad tool-building utilities.
21)
Define sequence, selection and iteration programming constructs.
Ans: sequence: in a sequential construct, the
program statements are executed one after another, in a sequence.
Selection: it is also known as conditional
construct. This structure helps the programmer to take appropriate decision.
The decision or selection is normally expressed as a condition.
Iteration: the process of repeated execution
of a sequence of statements until some condition is satisfied is called as
iteration or repetition or loop.
22)
Write an algorithm to find the largest of three numbers.
Ans: step 1: START
Step 2: [read three numbers]
INPUT a,b,c
Step 3: [assign a to large]
large=a
Step 4:[compare large and b]
if(b>large)
large=b
end if
step 5: [compare large and c]
if(c>large)
large=c
endif
step 6: [print the largest number]
OUTPUT large
Step 7: [end of algorithm]
STOP
23)
Mention the types of constants of C++.
Ans: - integer constants
o
decimal
constants
o
octal
constants
o
hexadecimal
constants
o
unsigned
constants
- floating point constants
- character constants
- string constants
24)
Explain the input, output operators in C++.
Ans: input operator “>>”
Input in C++ is done by using stream
extraction (>>) on the cin stream. The operator must be followed by the
variable that will store the data is going to be extracted from the stream.
Ex: int age;
cin>>age;
the first statement in example
declares the variable of type int called age, and the second one waits for an
input from cin in order to store it in this integer variable. cin stands for
console input.
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2 Comments
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