Mock Exam #1-4

A bank customer receives an e-mail from a sender claiming to be a bank employee. The e-mail asks the customer to provide personal information and to call a phone number if he or she has any questions. The customer suspects the e-mail might be a phishing attempt. Which of the following responses is most likely to be a privacy risk for the bank customer?

• Calling the bank at its official phone number to ask whether the request for personal information is

  legitimate

• Calling the phone number given in the e-mail and providing the personal information over the phone

• Checking that the domain name of the sender’s e-mail address is associated with the bank

• Conducting aWeb search to see if other people have received similar requests for personal information

Which of the following would be the best use of citizen science?

• An experiment that requires all participants to be working in the same laboratory

• An experiment that requires expensive equipment to conduct

• An experiment that requires data measurements to be taken in many different locations

• An experiment that requires specialized knowledge and training to conduct

A student is writing a program to model different real-world events using simulations. Which of the following simulations will generate a result that would best be stored using a Boolean variable?

• A simulation of flipping a fair coin

• A simulation of rolling a fair die (with sides numbered 1 through 6)

• A simulation of the temperature in a location over time

• A simulation of traffic patterns on a road

The code segment below is intended to swap the values of the variables first and second using a temporary variable, temp.

temp <- first

first <- second

<MISSING CODE>

Which of the following can be used to replace <MISSING CODE> so that the code segment works as intended?

• second <- first

• second <-temp

• temp <- first

• temp <- second