Data and File Types
What type of file is .jpg?
Image file
What does IP stand for?
Internet Protocol
What is the main reason to compress a file?
Reduce file size
What does SSL stand for?
Secure Sockets Layer
What is a byte made up of?
8 bits
Which file type stores raw, uncompressed audio data?
.wav
What is the role of DNS?
Converts domain names to IP addresses
Is MP3 lossy or lossless?
Lossy
What is phishing?
A method to trick users into giving personal info
Which is larger: 1 MB or 1 GB?
What does CSV stand for in .csv files?
Comma Separated Values
What protocol is used for secure web browsing?
HTTPS
What is run-length encoding?
A form of lossless compression using repeated values
Why is encryption important?
It secures data from unauthorized access
What’s a common method for visualizing data trends?
Line graph
What’s the difference between lossless and lossy compression?
Lossless retains all data; lossy removes some data to save space.
What is TCP responsible for?
Reliable, ordered, and error-checked delivery of data
What is metadata?
Data that describes other data
What is a DDoS attack?
Overwhelming a system with traffic to make it crash
What can cause biased results in data collection?
Non-representative sampling
Which file format is best for storing complex vector graphics?
.svg
What is the difference between IPv4 and IPv6?
IPv6 uses 128-bit addresses, IPv4 uses 32-bit
What does a higher compression ratio mean?
More reduction in file size
What is a digital certificate used for?
Verifying website authenticity
What is the digital divide?
The gap between those with and without internet access