A+ Computer Science- 1st Nine Weeks

Valentin and Jaylon are working on a project together on their computer. Which of the following best describes how their computer represents the information they are working on?

• Their computer will either represent the information as bits or bytes but not both.

• Their computer represents the information as a byte which is either a 0 or a 1.

• Their computer represents the information as bits which is either a 0 or a 1.

• Their computer represents the information as bits which contain 8 bytes.

Valentin and Patricia are computer science students working on a project for their class. They are currently trying to understand how to convert binary (base-2) numbers to decimal (base-10). They are stuck on converting 0011 0001. Can you help them?

• 32

• 64

• 49

• 121

Jaylon, Ethan, and Aiden are computer science students working on a project. They are developing a new algorithm and during their work, they encounter a situation where they need to convert the decimal (base-10) number 129 into binary (base-2) for their algorithm to function properly. What would be the binary representation of 129 that they should use?

• 1000 0001

• 1100 0001

• 0110 0110

• 0001 1111

During a school trip to Paris, Avery takes a picture of the Eiffel Tower with her smartphone and subsequently posts it on her school's social media page. Patricia, who runs a travel blog, finds the picture online and posts a copy of it on her blog with an attached Creative Commons license. Which of the following best describes who owns the photo?

• Patricia owns the photo because only holders of a Creative Commons license can own works online.

• Avery owns the photo because she was the original creator and did not license the work.

• Avery owns the photo because it was granted a Creative Commons license by another person online.

• Both own the photo because creating a copy makes it her intellectual property.

Mayra and Evan are helping their friend, Patricia, set up her new computer. They come across the term 'IP address'. Which of the following best describes the purpose of an IP address that Patricia should know?

• IP addresses indicate the location where Patricia's internet-connected computer was manufactured.

• IP addresses provide a unique number for identifying Patricia's computer that sends and receives information on the Internet.

• IP addresses indicate how many times an individual packet from Patricia's computer has been requested by a router.

• IP addresses assist in the reconstruction of a message that has been divided into many packets from Patricia's computer.

Valentin and Kimberly are working on a project where they need to send a large video file over the Internet to their client, Elijah. Which protocol is MOST important in ensuring all the packets of their video file reach Elijah and are reassembled correctly?

• Transmission Control Protocol (TCP)

• Internet Protocol (IP)

• User Datagram Protocol (UDP)

• HyperText Transfer Protocol (HTTP)

Ethan and Jaylon are setting up their new gaming console to connect to the Internet. Which of the following best describes the protocols their console will use?

• The protocols are designed by government agencies to ensure they remain free to use.

• The protocols are kept secret to maintain the privacy and security of people using them.

• Their console will use a protocol designed by the company that manufactured it.

• The protocols are open and used by all devices connected to the network.

Grant, Patricia, Kimberly, John, and Mayra are working on a group project. They need to request and send pages and files over the Internet. Which Internet protocol should they use to accomplish this task while browsing the World Wide Web?

• Transmission Control Protocol (TCP)

• Internet Protocol (IP)

• User Datagram Protocol (UDP)

• HyperText Transfer Protocol (HTTP).

Devin is a computer science student who is learning about number systems. He came across a decimal (base-10) number 255 in his textbook. Can you help Devin to find out the binary (base-2) representation of this number?

• 1111 1111

• 1010 1010

• 1001 1001

• 1100 1100

Kimberly and Ethan are setting up a home network. They are discussing the role of a router in their network. Which of the following statements by Ethan best describes the function of a router?

• A router is used to connect multiple devices like Kimberly's laptop and Ethan's gaming console to the Internet using a single IP address.

• A router is used to direct traffic in their network by forwarding data packets between devices like Kimberly's smartphone and Ethan's smart TV.

• A router is used to store data and files for devices connected to their network.

• A router is used to provide firewall and antivirus protection to their network.