Data Representation
This number is represented in binary as 1011
What is 11?
This process simplifies complex data by focusing on relevant details.
What is data abstraction?
This is a structured way to store, access, and manage large amounts of data.
What is a database?
This type of information includes your name, address, or Social Security number.
What is personally identifiable information (PII)?
The number of unique values that can be represented using 3 bits.
What is 8?
This is an everyday example of data abstraction on your phone.
(Answers may vary)
What is a contact list showing only names and phone numbers?
This is a common reason websites collect your data.
What is to show targeted ads?
This is why it’s dangerous to access sensitive accounts on public Wi-Fi.
What is because your data can be intercepted on unsecured networks?
This is the main difference between a lossy and a lossless compression method.
What is lossy loses data and quality, while lossless keeps all original data?
This data structure lets you manage a collection of items under one name, demonstrating abstraction.
What is a list?
This is one ethical concern with collecting data online.
What is invasion of privacy (or collecting data without consent)?
This is one simple way to protect your accounts from hackers.
What is using strong passwords?
This numbering system is often used because it is more compact and readable than binary.
What is hexadecimal?
This is one reason data abstraction is useful in large programs.
What is it makes the code easier to understand?
This is what large datasets can slow down.
What is processing speed?
This process scrambles data so only those with a key can read it.
What is encryption?
This is how digital images store color using RGB values for each pixel.
What is each pixel is encoded using 24 bits (RGB)?
This is what you build when you combine simple data into more complex structures.
What is a higher-level abstraction?
This "data about data" helps organize and retrieve large datasets efficiently.
What is metadata?
This is how data might still be compromised even with security measures.
What is phishing or malware?