Test BigIdeas 4 - AP CSP

Two computers are built by different manufacturers. One is running a Web server and the other is running a Web browser. Which of the following best describes the ability of the two computers to communicate with each other across the Internet?

The computers can communicate directly because Internet communication uses standard protocols.

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

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

According to the domain name system (DNS), which of the following is a subdomain of the domain example.com?

about.example.com

The figure below represents a network of physically linked computers labeled A through G. A line between two computers indicates that the computers can communicate directly with each other. Any information sent between two computers that are not directly connected must go through at least one other computer. For example, information can be sent directly between computers A and B, but information sent between computers A and C must go through other computers. (picture) What is the minimum number of connections that must be broken or removed in the network before computer E can no longer communicate with computer F?

3

A certain computer has two identical processors that are able to run in parallel. The table below indicates the amount of time it takes each processor to execute each of two processes. Assume that neither process is dependent on the other. Process: P, Q Execution Time on Either Processor: 30 seconds, 45 seconds Which of the following best approximates the difference in execution time between running the two processes in parallel instead of running them one after the other on a single processor?

30 seconds

A certain computer has two identical processors that are able to run in parallel. Each processor can run only one process at a time, and each process must be executed on a single processor. The following table indicates the amount of time it takes to execute each of three processes on a single processor. Assume that none of the processes are dependent on any of the other processes. Process: X, Y, Z Execution Time on Either Processor: 60, 30, 50 Which of the following best approximates the minimum possible time to execute all three processes when the two processors are run in parallel?

80 seconds

Which of the following best explains what happens when a new device is connected to the Internet?

An Internet Protocol (IP) address is assigned to the device.

Researchers have developed a simulation of packets traveling between server computers and client computers in a network. Of the following, which two outcomes are most likely to be results of the simulation? Select two answers.

Better understanding of the effect of temporarily unavailable network connections Better understanding of the impact of increased connection speeds for frequently visited servers

Which of the following best explains how data is typically assembled in packets for transmission over the Internet?

Each packet contains data to be transmitted, along with metadata containing information used for routing the data.

The figure below represents a network of physically linked devices, labeled A through F. A line between two devices indicates a connection. Devices can communicate only through the connections shown. (picture) Which of the following statements are true about the ability for devices A and C to communicate? Select two answers.

If devices B and D were to fail, then information sent from device A could not reach device C. If devices D and F were to fail, then information sent from device A could not reach device C.

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

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

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

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 best describes the relationship between the World Wide Web and the Internet?

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 describes the ability of parallel computing solutions to improve efficiency?

The efficiency of a solution that can be broken down into parallel portions is still limited by a sequential portion.

A user enters a Web address in a browser, and a request for a file is sent to a Web server. Which of the following best describes how the file is sent to the user?

The file is broken into packets for transmission. The packets must be reassembled upon receipt.

The following figure represents a network of physically linked devices labeled P through S. A line between two devices indicates a connection. Devices can communicate only through the connections shown. (picture) Which of the following statements best explains the ability of the network to provide fault tolerance?

The network is considered fault-tolerant because there are redundant paths between each pair of devices.