Final Review 60Q

To qualify for a particular scholarship, a student must have an overall grade point average of 3.0 or above and must have a science grade point average of over 3.2. Let overallGPA represent a student’s overall grade point average and let scienceGPA represent the student’s science grade point average. Which of the following expressions evaluates to true if the student is eligible for the scholarship and evaluates to false otherwise?

• (overallGPA > 3.0) AND (scienceGPA > 3.2)

• (overallGPA > 3.0) AND (scienceGPA ≥ 3.2)

• (overallGPA ≥ 3.0) AND (scienceGPA > 3.2)

• (overallGPA ≥ 3.0) AND (scienceGPA ≥ 3.2)

The following code segment is used to determine whether a customer is eligible for a discount on a movie ticket.

val1 ←← (NOT (category = "new")) OR (age ≥ 65)

val2 ←← (category = "new") AND (age < 12)

If category is "new" and age is 20, what are the values of val1 and val2 as a result of executing the code segment?

• val1 = true, val2 = true

• val1 = true, val2 = false

• val1 = false, val2 = true

• val1 = false, val2 = false

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

• Redundancy enables messages to be transmitted with as few packets as possible.

• Redundancy enables network devices to communicate with as few network connections as possible.

• Redundancy often allows messages to be sent on the network even if some network devices or connections have failed.

• Redundancy prevents network communications from being intercepted by unauthorized individuals.

The following code segment is intended to set max equal to the maximum value among the integer variables x, y, and z. The code segment does not work as intended in all cases.

Which of the following initial values for x, y, and z can be used to show that the code segment does not work as intended?

• x = 1, y = 2, z = 3

• x = 1, y = 3, z = 2

• x = 2, y = 3, z = 1

• x = 3, y = 2, z = 1

Consider the code segment below.

Which of the following changes will NOT affect the results when the code segment is executed?

• Changing line 3 to b10

• Changing line 3 to b+10

• Changing line 7 to 

  b20

• Changing line 7 to b+20

A certain social media Web site allows users to post messages and to comment on other messages that have been posted. When a user posts a message, the message itself is considered data. In addition to the data, the site stores the following metadata.

- The time the message was posted

- The name of the user who posted the message

- The names of any users who comment on the message and the times the comments were made

For which of the following goals would it be more useful to analyze the data instead of the metadata?

• To determine the users who post messages most frequently

• To determine the time of day that the site is most active

• To determine the topics that many users are posting about

• To determine which posts from a particular user have received the greatest number of comments

Which of the following is a true statement about program documentation?

• Program documentation should not be changed after it is first written.

• Program documentation is only needed for programs in development; it is not needed after a program is completed.

• Program documentation is useful when programmers collaborate but not when a programmer works individually on a project.

• Program documentation is useful during initial program development and also when modifications are made to existing programs.

A user wants to save a data file on an online storage site. The user wants to reduce the size of the file, if possible, and wants to be able to completely restore the file to its original version. Which of the following actions best supports the user’s needs?

• Compressing the file using a lossless compression algorithm before uploading it

• Compressing the file using a lossy compression algorithm before uploading it

• Compressing the file using both lossy and lossless compression algorithms before uploading it

• Uploading the original file without using any compression algorithm

Consider the following code segment.

What are the values of first and second as a result of executing the code segment?

• The value of first is true, and the value of second is true.

• The value of first is true, and the value of second is false.

• The value of first is false, and the value of second is true.

• The value of first is false, and the value of second is false.

A student is creating an application that allows customers to order food for delivery from a local restaurant. Which of the following is LEAST likely to be an input provided by a customer using the application?

• The address where the order should be delivered

• The cost of a food item currently available for order

• The credit card or payment information for the purchaser

• The name of a food item to be included in the delivery