Review: Mix 6

Which of the following describes the result of executing the program?

• The program displays the sum of the even integers from 0 to 10.

• The program displays the sum of the even integers from 0 to 20.

• The program displays the sum of the odd integers from 1 to 9.

• The program displays the sum of the odd integers from 1 to 19.

Which of the following describes how a distributed denial-of-service (DDoS) attack is most likely to compromise an online store’sWeb site?

• By causing incorrect information about services to be displayed

• By making it difficult for the site to safeguard customer login information

• By preventing customers from placing orders

• By preventing the store from filling previously placed orders

A program contains the following procedures for string manipulation.

Which of the following expressions can be used to generate the string "Happy" ?

• Concat (Substring ("Harp", 1, 1), Substring ("Puppy", 2, 4))

• Concat (Substring ("Harp", 1, 2), Substring ("Puppy", 3, 3))

• Concat (Substring ("Harp", 1, 2), Substring ("Puppy", 4, 2))

• Concat (Substring ("Harp", 2, 2), Substring ("Puppy", 4, 2))

Which of the following are true statements about how the Internet enables crowdsourcing?

I. The Internet can provide crowdsourcing participants access to useful tools, information, and professional knowledge.

II. The speed and reach of the Internet can lower geographic barriers, allowing individuals from different locations to contribute to projects.

III. Using the Internet to distribute solutions across many users allows all computational problems to be solved in reasonable time, even for very large input sizes.

• I and II only

• I and III only

• II and III only

• I, II, and III

A media librarian at a movie studio is planning to save digital video files for archival purposes. The movie studio would like to be able to access full-quality videos if they are needed for future projects. Which of the following actions is LEAST likely to support the studio’s goal?

• Using video file formats that conform to published standards and are supported across many different

  devices

• Using lossy compression software to reduce the size requirements of the data being stored

• Using storage media that can be expanded for additional data capacity

• Using a system that incorporates redundancy to handle disk failure