The Internet and Encryption
There's math in computer science?
Algorithms
It's all just bits
Let's Code
100
Before conducting ecommerce on a site, one should ensure that a safe connection has been established based on the protocol such as https://. In this case, the hypertext transfer protocol is ______.
What is secure
100
DISPLAY (20 mod 4) + 3
What is 3
100
Out of the following, which two levels of efficiency are considered unreasonable?

Quadratic, polynomial, cubic, linear, exponential, logarithmic, factorial or power.

What is exponential and factorial

100
The name for the base 2 number system.
What is binary
100
The type of control structure that can be used for making decisions in a program based on the value of a Boolean expression.
What is an if statement (or selection, or branching)
200
The Internet depends on a layered communication system of _______ that manage abstractions.
What are protocols
200
___ distinct numbers can be represented with 9 bits
What is 512
200
Bundling commands into one container for making programs easier to write and manage is _______________.
What is (procedural) abstraction
200
RGB color values mimic the human eye by representing colors using 3 values of ____ bits each.
What is 8 bits
200
The process of placing a loop inside another loop.
What is nesting
300

Involves one key for both encryption and decryption.

What is symmetric key encryption

300
HTML uses 6-digit hexadecimal notation for identifying colors on webpages so that the Red/Green/Blue values are each represented by a 2-digit Hexadecimal (16-bit) number. What is the decimal number for the Green color value in the color AC0BFF?
What is 11
300
In determining the best route to take on recent trip, a maps application gave the user three options based on traffic patterns, road construction, and roadways. This term refers to the method for choosing the best alternative among the three possible routes.
What is a heuristic solution
300

A company has a price list in a database. The manager attempts to apply a blanket 33% reduction in price but she notices some of the prices don't seem to be correct. What kind of error might be happening here?

What is round-off error

300
The failure to create a correct condition that controls a repeat statement results in this type of programming error.
What is an infinite loop
400
  • Pairs a public key for encryption and a private key for decryption. The sender does not need the receiver's private key to encrypt a message, but the receiver's private key is required to decrypt the message.

What is public key encryption

400

What is 6789 in hexadecimal? Only answers with work shown will be accepted.

What is 1A85

400
The binary search algorithm makes this vital assumption about the list of data being considered.
What is the data is sorted
400
Tiffani has a channel on a popular video sharing site and has over 100 thousand subscribers. After making her latest video and uploading to her channel, she notices that the quality of video better on her home computer than the uploaded version. This is the likely cause of Tiffani’s video quality.
What is lossy compression
400
The following code should display "even" if the positive number num is even.

IF (MISSING CONDITION)
DISPLAY ("EVEN")

Give a Boolean expression that could replace MISSING CONDITION
What is num MOD 2 == 0
500
The system used for translating a web address like www.google.com into an IP address that can be used to connect to the site's server.
What is the Domain Name System (DNS)
500
The binary number 00101101 in base-10.
What is 45
500
Assuming that forward tells a robot to move forward by 10 pixels and turn tells it to turn right by 90 degrees, this shape would be drawn by the following algorithm. forward forward turn forward turn forward forward turn forward turn
What is a rectangle
500
A computer program uses 3 bits to represent integers. When the program adds the decimal (base 10) numbers 5 and 3, the result is 0. Name the type of error that occurred.
What is an overflow error
500
i <- 0
sum <- 0
REPEAT UNTIL i = 4
sum <- sum + i
i <- i + 1
DISPLAY (sum)
What is 6
M
e
n
u