APCSP Semester 1 Concept Review

Front

What is the purpose of DNS?

Back

It returns the IP address given the name of a website.

Front

Why is IP v4 going to be replaced by IP v6?

Back

We are running out of IP v4 addresses.

Front

According to the domain name (DNS), which of the following is a subdomain of the domain example.com? about.example.com, example.co.uk, example.com.org, example.org

Back

about.example.com

Front

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?

Back

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

Front

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?

Back

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

Front

What is the 4-bit binary number for the decimal number Ten (10)?

Back

1010

Front

What is the best explanation for why digital data is represented in computers in binary?

Back

It's easier, cheaper, and more reliable to build machines and devices that only have to distinguish between binary states.

Front

In the context of computer science, decomposition is:

Back

To break things down into easier to handle chunks

Front

Flight simulation software, which imitates the experience of flying, is often used to train airline pilots. Which of the following is LEAST likely to be an advantage of using flight simulation software for this purpose? Flight simulation software allows pilots to practice landing in a variety of different terrains and weather conditions without having to physically travel., Flight simulation software could save money due to the cost of maintenance and fuel for actual training flights., Flight simulation software provides a more realistic experience for pilots than actual training flights., Flight simulation software allows for the testing of emergency air situations without serious consequences.

Back

Flight simulation software provides a more realistic experience for pilots than actual training flights.

Front

Which of the following best explains why it is not possible to use computers to solve every problem?
Options:
Current computer processing capabilities cannot improve significantly.
Large-scale problems require a crowdsourcing model, which is limited by the number of people available to work on the problem.
The ability of a computer to solve a problem is limited by the bandwidth of the computer’s Internet connection.
There exist some problems that cannot be solved using any algorithm.

Back

There exist some problems that cannot be solved using any algorithm.