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Sem 1-AHEAD_Cyber_Security > FCS - Week 3 > Flashcards

FCS - Week 3 Flashcards

1
Q

What is meant by data representation in Computer ?

A

data representation means , how data is stored and processed by the computer

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2
Q

What is data ?

A

Collection of raw , unorganised facts .consists of numbers,text,

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3
Q

What is information ?

A

Processed data is called information
means when data is processed organizes & structured.

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4
Q

Types of Data ?

A

Numeric
Character string (Text)
Audio
Video
Image

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5
Q

What is the raw form of data ?

A

**Raw form of data is,
Unprocessed Data
Unorganised Data
Non-Structured Data

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6
Q

What is mean by Data Representation in Computer ?

A

Data Representation means , how data is Stored,Processed & Transmitted .

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7
Q

How data is represented in computer ?

A

Computer interprets data as bit patterns.
Data is represented in computers as a sequence of bits ,Binary Digits 0s & 1s

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8
Q

How numeric data is represented in computer ?

A

Numbers are encoded to their binary equivalent through number conversion methods, computer uses 3rd B conversion methods for representing integers and fractions.

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9
Q

How text data is represented by computer

A

Text Data is represented by means of a code,
ASCII,UNICODE

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10
Q

How Audio is represented in Computers ?

A

The amplitude of the sound wave is recorded at regular intervals through sampling, then sampled data is encoded to binary sequence.

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11
Q

How images are represented in computer ?

A

Images interpreted as collection of dots in rows & columns, these dots are is called pixels,each pixel is encoded & the ebtire image is represented as a collection iof these encoded pixels.

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12
Q

How videos are represented by computer ?

A

A video can be considered as a collection of images and can be encoded almost similar to image encoding.

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13
Q

How many types of numbers or numeric data we have

A

Signed numbers unsigned numbers

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14
Q

What is a number system ?

A

Number system is the method to represent numbers
Number system define how a number can be represented using distinct symbols or digits

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15
Q

What is the base of number system

A

Total number of distinct digits in the system ?

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16
Q

What is the maximum value of a single digit in a number system .

A

Maximum value of single digit in a number system is One Less than its base

17
Q

How many types of Number Systems ?

A

Decimal
Binary
Octal
Hexadecimal

18
Q

What is the base of decimal number system

A

Base of decimal number is 10

19
Q

What is the base of binary number system

A

Base of binary number system is 2

20
Q

What is the base of octal number system

A

Base of octal number system is 8

21
Q

What is the base of hexadecimal number system

A

Base of hexadecimal number system is 16

22
Q

What type of number system conversion we have ?

A

We have to convert decimal, octal, hexadecimal to its binary equivalent,In other words we have to perform Binary Arithmetic

23
Q

What is the radix of number system ?

A

redix means base of a number system,
Redix determines how many different symbols are needed to represent a number

24
Q

How many symbols are in decimal number system

A

Total 10
0,1,2,3,4,5,6,7,8,9

25
Q

How many symbols are in binary number system ?

A

Total 2
0 and 1

26
Q

How many symbols are in octal number system ?

A

Total 8
0,1,2,3,4,5,6,7

27
Q

How many symbols are in hexadecimal number system ?

A

Total 16 - 0to9 & A to F
0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F

28
Q

What is the Task of Data Representation Technique ?

A

Data Representation Technique is used top convert the data into its corresponding binary format

29
Q

What methods are used to represent text data ?

A

Text data is represented by means of code discuss how thes,
These codes are of two types,
ASCII Codes
Unnicode

30
Q

Which method is used to represent audio later

A

Audio sampling method is used to represent audio data in computers. The amplitude of the sound wave is recorded at regular intervals through sampling

31
Q

Unsigned Data deals whith ,what type of data ?

A

Unsigned numbers deals with positive numbers

32
Q

How Signed data is represented in computer ?

A

Three methods are used to deal with signed data ,
1. Sign Magnitude Method
2.One’s Complement Method
3.Two’s Complement Method

33
Q

Whate is base 10 number system ?

A

Decimal Number Systerm is base 10 number System,
It is widely used number system all over the world

34
Q

How many group bits are used in octal number system ?

A

Group of three bits are used in octal number system.

35
Q

How many group bits are used in hexadecimal number system ?

A

Four bits group are used in hexadecimal number system

Sem 1-AHEAD_Cyber_Security (27 decks)

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