Mastering Parajumbles: Tips, Tricks, and Examples for Competitive Exams

Data Representation and Number Systems are crucial topics in the computer awareness section of banking and SSC exams. Understanding these concepts is essential for solving related MCQs efficiently.

Practice Show All Answers

Q1: To calculate perform calculation and store data computer user ______ number system.

A. Decimal

B. Hexadecimal

C. Octal

D. Binary

Computers use the binary number system, which consists of only two digits: 0 and 1. This system is fundamental to how computers process and store data, as it allows for efficient and straightforward representation of information.

Q2: The term bit is short for

A. Megabyte

B. Binary language

C. Binary digit

D. Binary number

The term "bit" is short for "binary digit." It is the smallest unit of data in computing and can have a value of either 0 or 1. Bits are the basic building blocks of digital information.

Q3: ______ is approximately one billion bytes.

A. Kilobyte

B. Bit

C. Gigabyte

D. Megabyte

A gigabyte (GB) is approximately one billion bytes. It is a unit of digital information storage commonly used to measure the capacity of storage devices like hard drives and memory cards.

Q4: One megabyte is equal to approximately

A. 1000 bits

B. 1000 bytes

C. 1 million bytes

D. 1 million bits

E. 2000 bytes

One megabyte (MB) is equal to approximately 1000 kilobytes (KB) or 1,048,576 bytes. This unit is used to measure the size of files and storage capacities in computing.

Q5: How many bits are in a byte?

A. 4

B. 8

C. 16

D. 32

E. None of these

There are 8 bits in a byte. A byte is a unit of data that consists of 8 bits and is the fundamental unit of digital information.

Q6: How many options does a binary choice offer?

A. One

B. Two

C. Three

D. It depends on the amount of memory in the computer

E. None of these

A binary choice offers two options: 0 or 1. This binary system is the foundation of digital computing, where all data is represented as a combination of these two values.

Q7: The _____ indicates how much data a particular storage medium can hold.

A. access

B. capacity

C. memory

D. storage

E. None of these

The capacity of a storage medium indicates how much data it can hold. This is typically measured in units like bytes, kilobytes, megabytes, gigabytes, and terabytes.

Q8: The smallest unit of information a computer can understand and process is known as a

A. digit

B. kilobyte

C. bit

D. byte

E. None of these

The smallest unit of information a computer can understand and process is known as a bit. A bit can have a value of either 0 or 1 and is the fundamental unit of digital information.

Q9: How many bytes are in a kilobyte (KB)?

A. 1000

B. 1024

C. 2048

D. 4096

E. None of these

There are 1024 bytes in a kilobyte (KB). This is because 1 KB is equal to 2^10 bytes, which is 1024 bytes.

Q10: A computer works on a ______ number system.

A. binary

B. octal

C. decimal

D. hexadecimal

E. None of these

A computer works on the binary number system, which uses only two digits: 0 and 1. This system is essential for the processing and storage of data in digital form.

Q11: Computers use the ______ system to process data.

A. processing

B. kilobyte

C. binary

D. representational

E. None of these

Computers use the binary system to process data. This system represents data using only two digits, 0 and 1, which allows for efficient and straightforward data manipulation and storage.

Q12: Information on a computer is stored as ________

A. analog data

B. digital data

C. modem data

D. watts data

E. None of these

Information on a computer is stored as digital data. Digital data is represented in binary form, using a series of 0s and 1s, which allows for precise and efficient storage and processing of information.

Q13: In the binary language each letter of the alphabet, each number and each special character is made up of a unique combination of

A. eight bytes

B. eight kilobytes

C. eight characters

D. eight bits

E. none of these

In the binary language, each letter of the alphabet, each number, and each special character is made up of a unique combination of eight bits, known as a byte. This allows for the representation of a wide range of characters and symbols in digital form.

Q14: A string of eight 0s and 1s is called a

A. megabyte

B. kilobyte

C. gigabyte

D. byte

E. none of these

A string of eight 0s and 1s is called a byte. A byte is a unit of digital information that consists of eight bits and is used to represent a single character or symbol in the binary system.

Q15: Which of the following is the largest unit of storage ?

A. GB

B. KB

C. MB

D. TB

E. None of these

The largest unit of storage among the given options is the terabyte (TB). One terabyte is equal to approximately 1,000 gigabytes (GB) and is used to measure very large storage capacities.

Q16: A _______ is approximately one billion bytes.

A. Kilobyte

B. Bit

C. Gigabyte

D. Megabyte

E. None of these

A gigabyte (GB) is approximately one billion bytes. It is a unit of digital information storage commonly used to measure the capacity of storage devices like hard drives and memory cards.

Q17: The smallest unit in a digital system is a

A. Byte

B. Kilobyte

C. Word

D. Character

E. bit

The smallest unit in a digital system is a bit. A bit can have a value of either 0 or 1 and is the fundamental unit of digital information. Bits are used to represent data in binary form.

Q18: The computer abbreviation KB usually means

A. Key Block

B. Kernel Boot

C. Kilo Byte

D. Kit Bit

E. None of these

The computer abbreviation KB usually means kilobyte. A kilobyte (KB) is a unit of digital information storage equal to 1,024 bytes. It is commonly used to measure the size of files and storage capacities.

Q19: How many bits are in a nibble?

A. 2

B. 4

C. 8

D. 16

E. None of these

A nibble is a unit of data that consists of 4 bits. It is half of a byte, which consists of 8 bits.

Q20: What is the hexadecimal equivalent of the binary number 1101?

A. A

B. B

C. C

D. D

E. None of these

The hexadecimal equivalent of the binary number 1101 is D. In hexadecimal, each digit represents 4 bits, so 1101 is represented as D.

Q21: Which of the following is not a valid binary number?

A. 1010

B. 1101

C. 1002

D. 1111

E. None of these

The number 1002 is not a valid binary number because binary numbers can only contain the digits 0 and 1.

Q22: Information on a computer is stored as what?

A. analog data

B. digital data

C. modem data

D. watts data

E. None of these

Information on a computer is stored as digital data. Digital data is represented in binary form, using a series of 0s and 1s, which allows for precise and efficient storage and processing of information.

Q23: One thousand bytes is a

A. kilobyte

B. megabyte

C. gigabyte

D. terabyte

E. None of these

One thousand bytes is approximately equal to one kilobyte (KB). A kilobyte is a unit of digital information storage equal to 1,024 bytes and is commonly used to measure the size of files and storage capacities.

Report Card

Total Questions Attempted: 0

Correct Answers: 0

Wrong Answers: 0

Keep Practicing!

Tips for Preparation:

• Practice Regularly: Number system questions are based on pattern recognition and practice. Solve as many MCQs as possible to get comfortable with conversions.
• Understand the Basics: Ensure you have a clear understanding of how numbers are represented in binary, octal, and hexadecimal forms.
• Use Shortcuts: Learn quick conversion methods and tricks for solving binary arithmetic questions.

Mastering Data Representation and Number Systems will not only help you answer questions accurately but also boost your confidence in the computer awareness section. Keep practicing and stay focused—these topics are crucial for scoring well in banking and SSC exams!

Computer Awareness Chapters: Learn Key Concepts with MCQs
General Introduction to Computers Input and Output Devices Personal Computer Data Representation and Number System Data Communication Microsoft Windows	Development of Computers Computer Memory Design Tools and Programming Languages Computer Software Internet Technology Microsoft Office