The Internet Quiz

Imagine you just set up a new smart refrigerator in your kitchen and connected it to your home Wi-Fi. What happens next in terms of connecting to the Internet?

• A device driver is assigned to the smart refrigerator.

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

• A packet number is assigned to the smart refrigerator.

• A Web site is assigned to the smart refrigerator.

Which of the following activities poses the greatest personal cybersecurity risk?

• Making a purchase on an online store that uses public key encryption to transmit information

• Paying a bill using a secure online electronic payment system

• Purchasing a couch by emailing a credit card number to the couch owner

• Checking a bank account on a bank's website that uses HTTPS for secure communication

Which of the following is LEAST likely to indicate a phishing attack?

• An email from a website asks that you click on a link to reset your password.

• An email from your bank asks you to call the number on your card to verify a transaction.

• An email from your water utility company asks you to enter your date of birth and social security number for verification purposes.

• An email indicates you have won money, and asks you to enter your bank account number so the money can be transferred

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

Which of the following are true statements about digital certificates in Web browsers?

• Digital certificates are used to verify the ownership of encrypted keys used in secure communication.

• Digital certificates are used to verify that the connection to a Web site is fault tolerant.

• Both I and II

• Neither I nor II

Imagine you're setting up a website for a new coffee shop named 'Cafe Latte' with the domain cafelatte.com. Which of the following would be considered a subdomain for the website?

• menu.cafelatte.com

• cafelatte.com/menu.html

• cafelatte.com.menu

• cafelatte.org

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 back to the user?

• The file is broken into packets and sent over a network. The packets must be reassembled by the user's computer when they are received. If any packets are missing, the browser re-requests the missing packets.

• The file is broken into packets and sent over a network. The user's browser must request each packet, in order, until all packets are received.

• The server attempts to connect directly to the user's computer. If the connection is successful, the entire file is sent at once. If the connection is unsuccessful, an error message is sent to the user.

• The server repeatedly attempts to connect directly to the user's computer until a connection is made. Once the connection is made, the entire file is sent.

Imagine a scenario where a city's internet infrastructure is hit by a natural disaster, causing some of the connections between routers to fail. Which of the following is a benefit of the fault-tolerant nature of Internet routing in this context?

• The ability to use a hierarchical naming system to avoid naming conflicts

• The ability to provide data transmission even when some connections between routers have failed

• The ability to resolve errors in domain name system (DNS) lookups

• The ability to use multiple protocols such as hypertext transfer protocol (HTTP), Internet protocol (IP), and simple mail transfer protocol (SMTP) to transfer data.

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 whether these two computers can communicate with each other across the Internet?

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

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

A city government is attempting to reduce the digital divide between groups with differing access to computing and the Internet. Which of the following actions is LEAST likely to be effective in this purpose?

• Holding basic computer classes at community centers

• Providing free wireless Internet connections at locations in low-income neighborhoods

• Putting helpful tips for operating computers on the city government website

• Requiring that every school and library have assistive devices that allow people with disabilities to access computer resources