Question 7
My answer: A
Correct answer: B. A lossless compression algorithm can guarantee reconstruction of original data, while a lossy compression algorithm cannot.
Forgot difference between lossless and lossy compression.
Question 8
My answer: B
Correct answer: C. The original developer of open-source software provides free or low-cost support for users installing and running the software.
Did not know enough about open-source software. There is no guarantee that the owner of the software will provide support for the users.
Question 12
My answer: C
Correct answer: D. An application that allows users to view descriptions and photographs of local landmarks
Crowdsourcing is the practice of surveying a large group of people through the internet which allows the users to contribute description and pictures of landmarks around the world.
Question 14
My answer: D
Correct answer: A. Across all eight years, the average amount of data stored per user was about 10 GB.
I had to cauculate the average amount by dividing the two graphs instead of just looking at one of them.
Question 19
My answer: D
Correct answer: C. It displays true if x is negative and displays nothing otherwise.
If the condition is not met then the system will not print anything since it does not have a commmand displaying something other than true.
Question 22
My answer: D
Correct answer: B. IPv6 allows for a greater number of addresses than IPv4, which allows more devices to be connected to the Internet.
Did not know enough about Internet protocol version 6. It allows more IP addresses than IPV4 does.
Question 24
My answer: B
Correct answer: C. Redundancy often allows messages to be sent on the network even if some network devices or connections have failed.
Redundant routing on the Internet can send messages on the network even if some connections fail because it has multiple pathways.
Question 25
My answer: D
Correct answer: C. Users of the application may see health benefits as a result of the application encouraging them to exercise with each other.
The application can improve the user’s health by connecting with other users nearyby encouraging them to exercise together.
Question 34
My answer: B
Correct answer: A. (genre = “mystery”) AND ((1 ≤ num) AND (cost < 10.00))
The option I chose will not count books that have exactly one copy because it uses 1 smaller than num instead of smaller or equal to.
Question 40
My answer: B
Correct answer: D. The image analysis is likely to take a longer time for the research team than for a distributed group of individuals.
Citizen science has members of the general public participating in scientific research allowing the work to be completed in less time because of the work being distributed.