AP COMP SCI P - Unit 2 Assessment

Internet Protocol (IP)

rules for addressing and sending data across the internet by assigning unique numbers to each connected device

Transmission Control Protocol (TCP)

takes inventory of all packets in the data stream to ensure they are successfully sent and received

Computing device

a machine that can run a program

Computing system

a group of computers working together for a common purpose

Computing network

a group of connected computers that can send or receive data

Path

a sequence of direct connections

Which of the following best describes the protocols used on the Internet?

D. The protocols of the Internet are open and used by all devices connected to the network

Jesse purchases a new smartphone and is immediately able to use it to send a photo over the Internet to a friend who lives in a different country. Which of the following is NOT necessary to make this possible?

B. A single direct connection is established between any two devices connected to the Internet

Which of the following is true of how the Internet has responded to the increasing number of devices now using the network?

C. The protocols of the Internet were designed to scale as new devices are added

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

B. Packet metadata is used to route and reassemble information traveling through the Internet

Emilee is watching an online video. The video is being sent to her laptop by a server over the Internet which splits the video into packets and sends them in the order they appear in the video. Which of the following is true about how the packets will arrive at her computer?

D. The packets may arrive out of order

Which of the following best describes the purpose of an IP address?

A. IP addresses provide a unique number for identifying devices that send and receive information on the Internet

Which of the following Internet protocols is MOST important in reassembling packets and requesting missing packets to form complete messages?

A. Transmission Control Protocol (TCP)

Which of the following Internet protocols is used to request and send pages and files on the World Wide Web?

D. HyperText Transfer Protocol (HTTP)

Two devices are connected to the Internet and communicating with one another. A squirrel chews through one of the wires in the network that is currently being used by the devices to communicate. The network immediately begins using a different path through the network and communication continues as normal.

This situation best exemplifies which principle?

A. fault-tolerance

An Internet Service Provider (ISP) is a company that builds routers and wired connections that allow individuals to access the Internet. An ISP is considering adding additional redundant connections to its network. Which of the following best describes why the company would choose to do so?

C. Redundant networks are more reliable

Which of the following situations is most likely to cause issues arising from the digital divide?

A. A state makes voter registration forms available only by visiting a government website

Which of the following is MOST likely to be an outcome of the digital divide?

B. People from some racial or ethnic groups have unequal access to computing technology.

Packet

chunk of data and its metadata, used to route and reassemble information on the internet

Datastream

the way in which information travels on the internet, not as a single piece but in chunks

User Datagram Protocol (UDP)

sends all packets w/out checking whether they were received or ordered properly

Which of the following best explains how messages are typically transmitted over the Internet?

B. The message is broken into packets. The packets can be received in any order and still be reassembled by the recipient's device.

Which of the following is a primary reason for the use of open protocols on the Internet?

D. Open protocols provide a way to standardize data transmission between different devices.

Which of the following best describes the relationship between the World Wide Web and the Internet?

C. The World Wide Web is a system of linked pages, programs, and files that is accessed via a network called the Internet.

Which of the following best explains how fault tolerance in a network is achieved?

B. By providing multiple paths between devices, enabling routing to occur even in the presence of a failed component

Which of the following best explains how the Internet is a fault-tolerant system?

B. The Internet is fault-tolerant because there are usually multiple paths between devices, allowing messages to sometimes be sent even when parts of the network fail

Which of the following is a primary benefit of making a computing system fault-tolerant?

A.
If one component of the system fails, users of the system can often still access it.

Which of the following actions is most likely to help reduce the digital divide?

B. Deploying satellites and other infrastructure to provide inexpensive Internet access to remote areas of Earth

Which of the following is LEAST likely to be a contributing factor to the digital divide?

C. Some parents prefer to limit the amount of time their children spend using computing devices or the Internet.

Which of the following actions is most likely to be effective in reducing the digital divide at a local level?

C. Providing free community access to computers at schools, libraries, and community centers