Unit 4 Lessons 1-3, 5-10 (APCSP Code.org)

This type of encryption uses one key for both encryption and decryption.

• symmetric

• asymmetric

• private

• public

If your message is encrypted using public key encryption it is _________________ to crack.

• impossible

• relatively easy

• computationally hard

• relatively hard

What type of key can be freely shared with anyone so that they can encrypt a message?

• Personal key
• Free Key
• Public Key
• Private Key

The key for a random substitution cipher is 

• a number
• an alphanumeric string
• a mapping of the letters of the alphabet to other letters
• two keys, a public and a private

This type of cyber attack involves overwhelming web servers with more requests for data than they can handle.

• phishing
• DDoS
• private key cracking
• public key encryption

When criminals attempt to obtain personal data by sending email impersonating legitimate companies, it is called 

• DDoS
• Caesar
• Vigenere
• phishing

Historically it has been observed that computer processing speeds tend to double every two years. This is known as:

• Boolean's Conjecture
• Moore's Law
• The "Big Data" Effect
• Powers of 2 Principle

When a computer scientist uses the term "Big Data" what do they typically mean?

• That a data set is larger than 5TB, which is the common "Big Data" threshold. 
• There is enough data that traditional data processing applications are inadequate. 
• It implies that the findings from the data analysis are hugely important for society. 
• There is so much data that it is virtually impossible to process. 

Which of the following is FALSE regarding exponential growth?

• Based on this concept, the average hard drive will be 8-10 terabytes in just over six years

• Exponential growth (combined with Moore's Law) makes it easier to plan for our future computing power and storage needs

• Refers to the fact that computing power is doubling every 1.5 to 2 years

• The amount of data being pushed around, saved, and/or processed is growing exponentially

What is data that describes data?

• metadata

• maxdata

• context

• content