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level: Fundamentals

Questions and Answers List

level questions: Fundamentals

Question	Answer
What is the smallest unit of data in computing?	Bit
How is bit represented in computing?	0 or 1
Grouping of 4 bytes is known as _______	Nibble
The term used for measuring the number of bits in each word is called	Word length
Set of symbols that are used to represent values derived from a common base or radix is called	Number System
How many digits are there in the decimal number system?	Ten
How many digits are there in the Hexadecimal number system?	Sixteen
Octal number system has ________ digits	Eight
_________ refers to the form in which data is stored, processed, and transmitted	Data Representation
Devices such as smartphones, iPods, computers etc stores data in _________ format	Digital
_________ consists of numbers that can be used in arithmetic operations.	Numeric data
Which data is composed of letters, symbols, and numerals in data representation?	Character
Character data is commonly referred to as __________	Text
Which are the most common types of codes used by digital devices to represent character data?	ASCII, Unicode, and their variants
ASCII stands for __________	American Standard Code for Information Interchange
How many bits are used to represent a character in ASCII?	Seven
Which type of ASCII is also known as a superset of ASCII that uses eight bits to represent each character?	Extended
The ASCII code for an uppercase A is _________	1000001
Extended ASCII represents the uppercase letter A as _________	1000001
Which variable-length coding scheme uses seven bits for common ASCII characters and sixteen bit Unicode?	UTF-8
Which term indicates how much data a particular storage medium can hold?	Capacity
In a computer information is stored as _________	Digital data
Numbers that include fractions/values after the decimal point is called as _________	Real numbers
Images are stored in a computer system as _________	Bit-mapped graphics
A formula which is used to calculate the size of a bit-mapped graphic is _________	Height x Width x DPI x DPI x Bit Depth
_________ are stored as a 2D array of pixels	Bit-mapped graphics
What are the common file formats for bit-mapped graphics?	JPEG, GIF and PNG
Number of colours that can be used in the image is represented as _________	Bit depth
How vector graphics are stored?	As a list of attributes
Name a common file format used for vector graphics	SVG (Scalable Vector Graphics)
The binary system is built from digital electronic components with 2 states _________	On and Off
_________ are fixed-point numbers with the radix point fixed after the least-significant bit	Integers
Which can represent zero and positive integers?	Unsigned Integers
_________ can represent zero, positive and negative integers	Signed integers