Collegeboard 2020 MCQ Practice
Test Review: 56/67
- We covered a lot of the cirriculum in the team teaches, so it was useful to see a lot of learned material
- A lot of questions were also very basic common sense based, and not very computational
- it was hard to focus throughout the entirity of the test
- some of the wordings were tricky and tripped me up a bit, same with a few of the diagrams
- blox codes??
- the internet versions one tripped me up, i didn’t know what it was asking
Areas for Growth
- binary counting: I don’t know how to binary count, so i got a lot of those wrong
- Fault tolerance diagrams were still hard to understand, must spend some time reviewing
- coordinate grid problems??
- learn different internet versions
Test Corrections:
In a certain computer program, two positive integers are added together, resulting in an overflow error. Which of the following best explains why the error occurs?
Answer: The program can only use a fixed number of bits to represent integers; the computed sum is greater than the maximum representable value.
What is the binary RGB triplet for the color indigo?
Answer: Indigo was (75,0,130) so the right binary RGB triplet is (00100101, 00000000, 10000010)
Which of the following best compares the values displayed by programs A and B? (see question 15)
Answer: Program A and program B display identical values in the same order. Program A initializes i to 1. Inside the loop, it prints i and then increments i. The loop terminates when i is greater than 10, which occurs after 10 is printed. Program A prints 1 2 3 4 5 6 7 8 9 10. Program B initializes i to 0. Inside the loop, it increments i and then prints i. The loop terminates when i equals 10, which occurs after 10 is printed. Program B prints 1 2 3 4 5 6 7 8 9 10.
Which of the following can be used to replace MISSING CODE so that the figure is drawn correctly?
Answer: DrawLine (startX, startY, endX, endY)endY endY - 2
Internet protocol version 6 (IPv6) has been introduced to replace the previous version (IPv4). Which of the following best describes a benefit of IPv6 over IPv4?
Answer: IPv6 allows for a greater number of addresses than IPv4, which allows more devices to be connected to the Internet.
In which of the configurations is it possible to have redundant routing between devices Q and V? (see question 43 for image)
Answer: Both configuration I and configuration II. In configuration I, some possible routes between computers Q and V include Q-P-V, Q-T-V, and Q-R-S-V. In configuration II, some possible routes between computers Q and V include Q-S-V, Q-R-T-V, and Q-P-T-V.
In configuration I, what is the minimum number of connections that must be broken or removed before device T can no longer communicate with device U?
Answer: 2, If the connections between U and V and between U and P were removed, then computer T and computer U can no longer communicate.
The transmission control protocol (TCP) and Internet protocol (IP) are used in Internet communication. Which of the following best describes the purpose of these protocols?
Answer: To establish a common standard for sending messages between devices on the Internet