Binary Numbers
2
How many bits are in a byte?
8 bits
What kind of requests do client computers make to get information from servers?
Acceptable answers: HTTP requests, GET requests, POST requests
Write on a whiteboard the data type for a 2D array of Ints.
[[Int]]
What other programming language is JavaScript named after?
Java
This number is 100 in binary.
4
What are the three different color values that create on single digital color on a computer?
Red, green, blue color values
The internet is not a centralized network, but a _________ network.
distributed
Name one use for a 2D array.
Acceptable answers include:
Images
Data tables
Grids (seating charts)
Game boards
What startup, acquired by Facebook for $1 billion in 2012, became the fourth most downloaded app in the 2010s and is known for the posting of pictures?
This number is 101 in binary.
5
What is the name of the code where each character corresponds to a different number? (Just the abbreviation is fine)
ASCII (American Standard Code for Information Interchange)
What is the name of the system that resolves domain names (e.g. google.com) to IP addresses?
DNS (Domain Name System)
Write on a whiteboard how would you initialize an empty 2D array of Ints (stored in a variable called arr).
let arr = [[Int]]()
OR
var arr = [[Int]]()
Which American tech company started with its founders' idea to rent out an air mattress in their San Francisco living room to travelers hoping to avoid the city's high cost of rent?
Airbnb
This number is 1100 in binary.
12
How many different values can be stored in a byte?
0 --> 255 = 256 different values
What is the name for the small pieces of data that are broken down and sent over the internet?
Packets
Write on a whiteboard how you would access the first subarray (row) of numbers in a 2D array of Ints called numbers.
numbers[0]
What computer was introduced in 1984 Super Bowl ads?
Apple's Macintosh
This number is 1111 in binary.
15
What is the type of image compression where the image loses some data?
Lossy image compression
What is the name of the protocol that handles the sending and receipt of packets?
TCP/IP (Transmission Control Protocol/Internet Protocol)
Write on a whiteboard how you would access the first number (think: upper left hand corner number) in a 2D array of Ints called numbers.
numbers[0][0]
Name at least ONE of the two browsers involved in the web's first browser war in the 1990s.
Microsoft's Internet Explorer, Netscape's Navigator