Untitled Presentation

Multiple Choice

Byte pair encoding is a data encoding technique. The encoding algorithm looks for pairs of characters that appear in the string more than once and replaces each instance of that pair with a corresponding character that does not appear in the string. The algorithm saves a list containing the mapping of character pairs to their corresponding replacement characters.

For example, the string "THIS_IS_THE_BEST_WISH" can be encoded as "%#_#_%E_BEST_W#H" by replacing all instances of "TH" with "%" and replacing all instances of "IS" with "#".

Which of the following statements about byte pair encoding is true?

• Byte pair encoding is an example of a lossy transformation because it discards some of the data in the original string.

• Byte pair encoding is an example of a lossy transformation because some pairs of characters are replaced by a single character.

• Byte pair encoding is an example of a lossless transformation because an encoded string can be restored to its original version.

• Byte pair encoding is an example of a lossless transformation because it can be used to transmit messages securely.

Multiple Choice

What are the main topics covered in this content?

• Introduction to concepts

• Types of coding

• Binary code

• Text coding

Multiple Choice

A student sends the text message “Hi.” The cell phone turns the message into binary code. How are the H and the I different in binary code?

• Each letter is coded as a different pattern of 1s and 0s

• One letter is coded as a 1, and the other is coded as a 0.

• Each letter is coded as the number that matches its place in the alphabet.

• One letter is coded as a dark pixel, and the other letter is coded as a light pixel.

Open Ended

Explain the difference between coding and decoding as described in the text.

Multiple Choice

What is the definition of a code language as described in the image?

• A method of communication

• A way to store information

• A system of symbols

• A programming language

Multiple Choice

What is coding?

• The process of making coffee

• Writing instructions for computers

• A type of puzzle

• Drawing pictures for a computer

Multiple Choice

What are the different types of coding?

• Types of coding

• Coding languages

• Coding techniques

• Coding styles

Multiple Choice

A blog is a form of digital communication?

• True

• False

Multiple Choice

The string of 1s and 0s that control a computer is called _____ code.

• binary
• dichotomous
• Morse
• two-number

Multiple Choice

What are the advantages of non-numeric codes as mentioned in the image?

• They are more complex

• They are less informative

• They are easier to understand

• They provide only minimal information

Multiple Choice

ASCII is a character-encoding scheme that uses a numeric value to represent each character. For example, the uppercase letter “G” is represented by the decimal (base 10) value 71. A partial list of characters and their corresponding ASCII values are shown in the table above.

ASCII characters can also be represented by binary numbers. According to ASCII character encoding, which of the following letters is represented by the binary (base 2) number 1010100?

• N

• P

• T

• W

Multiple Choice

What is the point of binary?

• It represents how computers interpret electrical signals
• Because we like to make you do extra maths ;-D
• For the lulz
• Because it describes star systems

Multiple Choice

What is a bit and how does it relate to a byte?

• A bit is the smallest unit of data

• A byte consists of 8 bits

• A bit can be either 0 or 1

• A byte is larger than a bit

Multiple Choice

Calculate the binary addition:
00111011
00110011
Use binary addition rules + whiteboards!

• 01101111
• 01111110
• 01101110
• 11111110

Multiple Choice

What is the limitation of ASCII mentioned in the image?

• Only covers English language

• Supports multiple languages

• Includes special characters

• Has no limitations

Multiple Choice

Which of the following is true about ASCII?

• It supports all modern languages

• It is limited to 128 characters

• It uses 16-bit encoding

• It is primarily used for image encoding

Multiple Choice

What is the primary advantage of Unicode over ASCII?

• Unicode is faster to process

• Unicode can represent a larger set of characters

• Unicode uses less memory

• Unicode is easier to understand

Multiple Choice

How many bits are used in standard ASCII encoding?

• 4 bits

• 7 bits

• 8 bits

• 16 bits

Multiple Choice

What is the primary purpose of ASCII character encoding?

• To represent images in binary form

• To encode text characters using numbers

• To compress audio files

• To encrypt data for security

Multiple Choice

Why was Unicode developed?

• To replace binary code

• To provide a universal character set for all languages

• To improve internet speed

• To reduce file sizes

Multiple Choice

What determines the maximum number of colors that can be displayed in a bitmap image?

• The file format (e.g., JPEG, PNG)

• The size of the image file

• The color depth of the image

• The resolution of the image

Open Ended

Explain the PCM method and its importance in audio processing.

Multiple Choice

What is the significance of the sampling frequency of 44.1 kHz in relation to CD quality?

• It is the maximum frequency for audio playback

• It is the minimum frequency for audio playback

• It corresponds to the quality of analog sound

• It is irrelevant to audio quality

Multiple Select

A pottery shop’s database allows users to choose a type of plate, as shown.

Choose all the reasons why the database uses this type of validation.

• eliminates input spelling errors

• users are presented with the only possible

  options

• prevents impossible responses

• Avoids inputs of the wrong data type

Multiple Choice

What are the two types of parity mentioned in the image?

• Even parity

• Odd parity

• Both even and odd parity

• None of the above

Multiple Choice

What is the function of CRC in identifying layers as mentioned in the image?

• To enhance security

• To identify and locate layers

• To compress data

• To encrypt files

Multiple Choice

What does CRC-32 do in ZIP archives according to the image?

• It compresses files

• It checks data integrity

• It encrypts data

• It organizes files

Multiple Choice

What is the purpose of the CRC algorithm as described in the image?

• To calculate checksums

• To compress data

• To encrypt files

• To decode messages

Multiple Choice

What is the date mentioned in the image?

• 2025/08/05

• 2025/07/05

• 2025/06/05

• 2025/05/05

Poll

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