Mixed MCQ Practice

Which of the following is an example of a phishing attack?

To be eligible for a particular ride at an amusement park, a person must be at least 12 years old and must be between 50 and 80 inches tall, inclusive. Let age represent a person's age in years, and height the person's height in inches. Which expression evaluates to true if and only if the person is eligible for the ride?

Which of the following best explains the relationship between the Internet and the World Wide Web?

Which of the following best exemplifies the use of multifactor authentication to protect an online banking system?

Which of the following best describes a direct benefit in using redundant routing on the Internet?

The player controls in a video game are represented by 5-bit binary numbers, as shown:

What is the decimal value for the jump control?

A list of numbers is "increasing" if each value after the first is ≥ the preceding value. The procedure below is intended to return true if numberList is increasing and false otherwise. Assume numberList contains at least two elements. Which change is needed for the program to work as intended?

Line 1: PROCEDURE isIncreasing(numberList)
Line 2: {
Line 3:     count ← 2
Line 4:     REPEAT UNTIL(count > LENGTH(numberList))
Line 5:     {
Line 6:         IF(numberList[count] < numberList[count - 1])
Line 7:         {
Line 8:             RETURN(true)
Line 9:         }
Line 10:        count ← count + 1
Line 11:    }
Line 12:    RETURN(false)
Line 13: }

The author of an e-book publishes the e-book using a no-rights-reserved Creative Commons license. Which of the following best explains the consequences of publishing the book with this type of license?

Which of the following best explains how devices and information can be susceptible to unauthorized access if weak passwords are used?

A local router is configured to limit the bandwidth of guest users connecting to the Internet. Which of the following best explains the result of this configuration as compared to a configuration in which the router does not limit the bandwidth?

A video-streaming website keeps a count of times each video has been played. At one time the most popular video's count was about two million. Later, the same video displayed a seven-digit negative number while other videos' counts displayed correctly. What is the most likely explanation?

Which of the following statements about the Internet is true?

In which of the following situations would it be most appropriate to choose lossy compression over lossless compression?

A social-media app is updating its algorithm to add a new feature. Which of the following strategies is LEAST likely to introduce bias into the application?

Which of the following best explains how data is transmitted on the Internet?

A binary number is transformed by appending three 0s to the end. For example, 11101 becomes 11101000. Which best describes the relationship between the transformed number and the original?

Which of the following is a true statement about the use of public key encryption in transmitting messages?

Result X is expected 25% of the time and result Y 75%. The code below is intended to simulate 100 trials, but it reports "X occurred 24 times and Y occurred 70 times" — only 94 trials counted. Which change ensures a correct simulation?

Line 1: xCount ← 0
Line 2: yCount ← 0
Line 3: REPEAT 100 TIMES
Line 4: {
Line 5:     IF(RANDOM(1, 4) = 1)
Line 6:     {
Line 7:         xCount ← xCount + 1
Line 8:     }
Line 9:     IF(RANDOM(1, 4) > 1)
Line 10:    {
Line 11:        yCount ← yCount + 1
Line 12:    }
Line 13: }

An online gaming company is introducing initiatives to encourage respectful communication. Which of the following describes a solution that uses crowdsourcing?

Which of the following best exemplifies the use of keylogging to gain unauthorized access to a computer system?