CodeHS - Unit 3: The Internet Test

Which of the following best describes the basic purpose of the internet?

• The internet protects the privacy of sensitive information.

• The internet stores data

• The internet sends information from one computer to another.

• The internet connects input and output devices to a computer.

What is the main purpose of routers?

• Routers connect computers and choose the path that information takes from one computer to another.

• Routers connect computers to nearby wireless devices, such as headphones and speakers.

• Routers translate a website’s name into an IP address.

• Routers increase the speed of a network’s internet connection by decreasing the latency.

Two computers are built by different manufacturers. Which of the following best describes whether these two computers can communicate with each other across the Internet?

• The computers can communicate directly because Internet communication uses standard protocols that are used by all computers on the Internet.

• The computers can communicate, but additional hardware is needed to convert data packets from one computer’s protocol to the other computer’s protocol.

• The computers can communicate directly only if the messages consist of text. Other formats cannot be interpreted across computers.

• The computers cannot communicate, because different manufacturers use different communication protocols.

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

• about.example.com

• example.com/about.html

• example.com.about

• example.org

Which of the following is NOT a main method for sending information from one computer to another?

• Radio

• molecules

• light

• electricity

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

• A packet number is assigned to the device.

• A Web site is assigned to the device.

• A device driver is assigned to the device.

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

What does it mean for a routing system to be 'redundant'?

• it means that there is more than one path between two points in the network.

• it means if one router goes down then the internet would crash.

• it means multiple packets are sent over the network.

• it means each computer is assigned its own address

What is the Internet Protocol (IP)?

• An agreement that sets a limit on the number of computers than can be on the Internet at any given time

• A protocol that defines the structure of an Internet address and assigns a unique address to every device on the Internet

• A law that says that the Internet is for everyone

• A set of rules describing what behavior is acceptable on the Internet

Fiber optic cables transfer data at the speed of light, so they have the _______________ latency. This results in the __________ connection.

• lowest, slowest

• lowest, fastest

• highest, slowest

• highest, fastest

Which of the following is considered an unethical use of computer resources?

• Downloading file sharing software on your home computer

• Searching online for the answers to CodeHS exercises and quizzes

• Purchasing an app from an app store and downloading it directly to a mobile device

• Searching online for an electronic version of a textbook