AP CSP Mid-Term

Convert the binary (base-2) number 1001 to decimal (base-10).

• 9

• 10

• 16

• 17

Convert the decimal (base-10) number 20 to binary (base-2).

• 10010

• 00101

• 11000

• 10100

Jorge is sending a large image file to a friend as part of a shared classroom project. Which of the following is most likely true if Jorge opts to compress the image before sending it?

• The image can no longer be represented using bits.

• 
  

  The image will have been converted into an analog form.

• The image will require more pixels to display it on the screen.

• The image will require fewer bits in order to be represented.

Which of the following is true of intellectual property?

• Information created on a computer is not owned by anyone since only analog information is protected under copyright law.

• You do not need to cite work created by someone else if both the original work and your use of it are in digital form.

• Creative Commons enables content creators to freely distribute their otherwise copyrighted work.

• Creative Commons has severely hindered broad and open access to digital information

Ryan is designing an app that needs to quickly send low quality photos between users. Most smartphones take much higher quality photos than Ryan needs for his app. Which answer best describes the type of compression Ryan should choose and why?

• Lossless compression since it ensures perfect reconstruction of the photo.

• Lossy compression since it ensures perfect reconstruction of the photo.

• Lossless compression since it typically results in smaller data sizes.

• Lossy compression since it typically results in smaller data sizes.

Your computer uses 4 bits to represent decimal numbers (0, 1, 2, 3 and so on) in binary. What is the SMALLEST number for which an overflow error occur?

• 14

• 15

• 16

• 17

This diagram shows a number of computing devices connected to the Internet with each line representing a direct connection.   What is the MINIMUM number of paths that would need to be broken to prevent Computing Device A from connecting with Computing Device E?

• 1

• 2

• 3

• 4

This diagram shows a number of computing devices connected to the Internet with each line representing a direct connection.   Device A is attempting to send data over the Internet to Device E. Which of the following is true of how the data will travel through the network?

• The data will always travel through Device B as it is the shortest path

• The data will never be sent to Device G since there are other shorter paths available

• It is possible that the data travels through any of the devices in the network before arriving at device E

• If the data travels through Device D then it will not travel through Device B

The following figures represent different ways of configuring a network of physically linked computers labeled P, Q, R, and S. A line between two computers indicates that the computers can communicate directly with each other. In which configuration is it NOT possible to have redundant routing between computers P and S?

• 
• 
• 
• 

Which of the following is true of how packets are sent through the Internet?

• Packet metadata is only included on important packets to indicate they should get access to faster paths through the network

• Packet metadata is used to route and reassemble information travelling through the Internet

• 
  

  Information sent through the internet is only encapsulated in packets if the message is too large to be sent as a datastream

• Information sent through the internet is split into two packets, one which contains the message and another which contains the metadata