AP Computer Science Principles Practice

Front

Which of the following is LEAST likely to indicate a phishing attack?
An e-mail from your bank asks you to call the number on your card to verify a transaction
An e-mail from a merchant asks that you click on a link to reset your password
An e-mail from a utility company asks you to enter your date of birth and social security number for verification purposes
An e-mail indicates that you have won a large sum of money and asks you to enter your bank account number so that the money can be transferred to you

Back

An e-mail from your bank asks you to call the number on your card to verify a transaction

Front

Which of the following activities poses the greatest personal cybersecurity risk?
- Making a purchase at an online store that uses public key encryption to transmit credit card information
- Paying a bill using a secure electronic payment system
- Reserving a hotel room by e-mailing a credit card number to a hotel
- Withdrawing money from a bank account using an automated teller machine (ATM)

Back

Reserving a hotel room by e-mailing a credit card number to a hotel

Front

Which of the following best describes a Distributed Denial of Service (DDoS) attack? Options: An attempt by a country to deny its citizens access to the Internet, An attempt to deny users access to a Web site's resources by flooding the Web site with requests from multiple systems, An attempt by one user to deny service to another user by posting material on a social network, An attempt by a user of the Internet to get private information from a secure database

Back

An attempt to deny users access to a Web site's resources by flooding the Web site with requests from multiple systems

Front

A program is expressed in a programming language. Which of the following is true of the program?

Back

The program can also be expressed as binary code, but will be more easily understood by humans when expressed in a higher-level programming language.

Front

Which of the following statements best describes the properties of public key encryption? Options: Public key encryption is an encryption method which relies on separate keys for encrypting and decrypting information., Public key encryption is a highly secure encryption scheme that in which a single key is used by both the sender and receiver of the message., Public key encryption makes use of certain types of problems which are easier for humans to solve than computers., Public key encryption makes use of mathematical problems which no algorithm can be used to solve.

Back

Public key encryption is an encryption method which relies on separate keys for encrypting and decrypting information.

Front

Which of the following statements best describes the behavior of the algorithm depicted in the flowchart? Assume a always starts greater than b.

Back

It displays the difference between a and b.

Front

Which of the following encoded ciphertext strings decodes to an original plaintext message of “secret”? Options: ersecr, wigvix, kwujwl, oaynap

Back

oaynap

Front

Which of the following best defines confidentiality in context with information and data? Options: The ability to limit access to information to a certain set of users, The certainty that information is accurate, The confirmation that a company will not sell your information to others, The reliability of access to information

Back

The ability to limit access to information to a certain set of users

Front

Which of the following is true about low level computer languages? I. Low level languages give the programmer more control over how system resources are used. II. Code in a programming language is often translated into code in another (lower level) language to be executed on a computer. III. Low level programming languages are designed to be easier for people to read and write.

Back

I and II only

Front

Consider the above code segment that is designed to print all numbers from a list of integer values, called grades, that are between 90 and 100, inclusive. Which of the following modifications can be made to the code to allow it to also print numbers from a variety of different ranges of values (e.g., 70 to 80, 85 to 95, 1 to 50, etc.)? Options: userPassword = "swordfish", "swordfish", userPassword != "swordfish", userPassword ← INPUT

Back

userPassword = "swordfish"