Multiple Choice 2018 Test Corrections and Reflection

• Score: 64/66 = 96%
• Corrections
  • Question 40 - The teacher has data representing the scores of thousands of students. For each student, the data contain the student name, the midterm exam score, the final exam score, and the result of the total points calculation. Which of the following could be determined from the data?
  • Question 47 - In public key cryptography, the sender uses the recipient’s public key to encrypt a message. Which of the following is needed to decrypt the message?

Score: 64/66 = 96%

Corrections

Question 40 - The teacher has data representing the scores of thousands of students. For each student, the data contain the student name, the midterm exam score, the final exam score, and the result of the total points calculation. Which of the following could be determined from the data?

**I got this question wrong. I put C, 1 and 3 only while the correct answer was D, 1, 2, and 3. C is incorrect because the average increase in total points per student as a result of the score replacement policy can also be determined by calculating the differences between each student score before and after the replacement policy was applied. D is correct because all of the bullet points can be determined from the data presented in the table. **

Question 47 - In public key cryptography, the sender uses the recipient’s public key to encrypt a message. Which of the following is needed to decrypt the message?

**I got this question wrong. I put B, the sender’s private key while the correct answer was D, the recipient’s private key. B is correct because the sender’s private key cannot be used to decrypt the message. Adn D is correct because in public cryptography, a message is encrypted with a recipient’s public key and decrypted with the recipient’s private key. **