MCQ Revisions
📸 My MCQ Score:
📸 Visual Breakdown:
✅ Strengths:
- Conditionals, developing procedures, data compression, iteration.
❌ Weaknesses:
- Strings and binary search.
Q5
Revisions: I was incorrect. Given these inputs, the OR gate will output false, while the first AND gate will output true. Since only one input to the second AND gate is true, the final output of the circuit will be false.
Q9
Revisions: Incorrect, Creative Commons license enables individuals to publish content while defining how it can be legally used or shared. However, it does not enhance the security of private data. Public-key encryption was the right answer.
Q11
Revisions: I had gotten this one wrong since I don’t have much knowledge of binary.
Q11
Revisions: This one I also got incorrect due to lack of knowledge of binary.
Q23
Revisions: Incorrect. This expression sets available to true if weekday is true or miles is less than 20, but the flowchart requires both conditions to be true.
Correct. The flowchart sets available to true only when weekday is true and miles is less than 20, matching the code’s functionality.
Q31
Revisions: Incorrect. Sharing the software, even with a few peers, violates copyright.
Correct. To share the application legally, the student must get permission from the copyright owner.
Q32
Revisions: Incorrect. This code subtracts the lowest score from the sum but incorrectly divides by the total number of scores instead of one less.
Correct. The code correctly drops the lowest score by subtracting it from the sum and then divides by one less than the total number of scores to find the average.
Q33
Incorrect. This can be determined by comparing each student’s original average to their final grade after dropping the lowest score.
Correct. Without the individual assignment scores, the administrator can only identify the lowest score, not the others.
Q38
Incorrect. IPv6 addresses are longer than IPv4, but address length does not directly impact routing speed.
Correct. IPv6 supports more IP addresses than IPv4, enabling more devices to connect.
Q41
Incorrect. Statement III is correct. It removes the first 11 characters (the date tag) using TrimLeft, then removes the last 4 characters (the file extension) using TrimRight, leaving only the description.
Q47
Incorrect. A binary search works on any sorted list, even if it contains duplicates.
Correct. A binary search requires the list to be sorted to function correctly.
Q54
Incorrect. The code inserts even elements from oldList at the beginning of newList, reversing their order.
Correct. The code scans originalList left to right, inserting even elements at the start of newList, reversing their order. Changing line 5 to APPEND(newList, number) preserves their original order.
Q55
Incorrect. Writing 1 at the top and height at the bottom results in the final card showing the number of people on top and the sum of heights on the bottom. Dividing gives the inverse of the average instead of the average.
Correct. Writing the height at the top and 1 at the bottom ensures the final card shows the sum of heights on top and the number of people on the bottom. Dividing gives the average height.
Q56
Incorrect. Version I calls GetPrediction once per element in idList, while Version II calls it twice per element plus one extra time, making it take over a minute longer.
Correct. Version I calls GetPrediction four times, taking about 4 minutes. Version II calls it nine times, requiring about 9 minutes to execute.
Q65
Incorrect. The code first stores “jack” in animal, then concatenates “jack” and “a” to get “jacka”, and finally prepends “lope” to store “lopejacka” in animal.
Correct. The code first stores “lope” in animal, then concatenates “a” and “lope” to get “alope”, and finally prepends “jack” to store “jackalope” in animal.
Q66
Incorrect. This line should not be removed. The variable count should increment by 1 when currentNum is a perfect number, so it must be inside the IF statement.
Correct. This line should be removed. count should only increase when currentNum is a perfect number, meaning it should be inside the IF statement.
Correct. This line should be removed. currentNum should be checked for every integer from start to end, so it should only be incremented inside the loop but outside the IF statement.
📌 How I Improved:
- Reviewed College Board assignments.
- Collaborated with peers (reaching out for help/questions)