AP CSP Exam Review #2

The Internet is ...

• a network of networks that was invented by Tim Berners Lee.

• something that connects devices and computers around the world.

• based on the internet protocol suite.

• All of the above

Which of the following are NOT examples of computer hardware?

• CPU, Main memory & Integrated circuits

• Flash drive, External hard drive, DVD Rom

• Microsoft Word, Angry Birds, Firefox

• Printer, Monitor, Mouse

What is lossless data compression?

• It is a form of data compression that reduces the data file size without any loss of data information. It allows the original file to be restored

• It is a form of data compression the reduces the data file size with an acceptable loss of data information. It does not allow the original file to be restored

• It is a form of data compression that reduces the data file size by removing non-essential data. When the file is restored it appears like the original file.

• It is a form of data compression that is only used for temporary data files. The file is reduced and stays compressed

Metadata is ...

• the data that has been analyzed and classified as significant

• the name for data that is not compressed.

• a set of data that describes and gives information about the data, such as file size, data format, creation date,etc.

• the name for the data that is lost during data compression

What is lossy data compression?

• It is a form of data compression that reduces the data file size without any loss of data information. It allows the original file to be restored

• It is a form of data compression the reduces the data file size with an acceptable loss of data information. It does not allow the original file to be restored

• It is a form of data compression that reduces the data file size by removing non-essential data. When the file is restored it appears like the original file.

• It is a form of data compression that is only used for temporary data files. The file is reduced and stays compressed

Which of the following describes a logic gate?

• It is a hardware abstraction that is modeled by Boolean logic

• It is a procedural abstraction that is modeled by Boolean logic.

• It is a high-level programming abstraction used in an application program.

• It is a low-level programming abstraction used in an application program.

Abstraction occurs ...

• in computer operations at the hardware, low-level only.

• in computer operations at the application, high-level only.

• primarily at the electrical hardware level.

• at every level and stage of computer operations.

Before the world's largest ocean liner, the Queen Mary 2, started construction, a 15 foot model is used in a 600 meter water basic using sophisticated computer simulations. Which of the following is not a benefit of such simulations?

• It assists in selecting the optimal hull design of the ship for all weather conditions.

• It helps to determine the size of the crew necessary to manage all of the ship's needs.

• It allows testing of dangerous water conditions without the danger to people or ship.

• It can save money by not using a faulty design that is very expensive to alter.

Characters are represented as numerical values initially using ASCII code. Later Unicode was introduced to represent characters. What was Unicode necessary?

• ASCII used an older algorithm for its conversions. Unicode uses a faster algorithm.

• Computer scientists realized that ASCII wasted memory. They switched to the smaller Unicode system for more efficient memory management.

• ASCII worked fine initially with western languages. Many middle east and eastern languages have more characters than ASCII can handle.

• The two systems are identical in purpose. It is pretty much a matter of personal preference as often is the case with chosen program languages.

Procedural abstraction is used in many programs. Which of the following are benefits of using procedural abstraction?

I. It makes a program more readable by using self-identifying procedure names.

II. It saves time and memory by writing the code once and using it many times.

III. It allows programmers to use program functionality without understanding it.

• I only

• I and II only

• II and III only

• I, II, and III