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Question 1
What is the main purpose of a CDN for a global audience?
Correct Answer:
It reduces latency by serving content from servers closer to users, improving load times.
Explanation:
A CDN works by bringing content closer to users to speed things up. It places copies of your static resources on many servers around the world, so when someone in another country requests a page, the CDN serves from the closest server. That shortens the distance data has to travel, reduces the number of network hops, and lowers the time it takes for the page to start loading. This leads to faster load times and a better user experience for people worldwide. A CDN also helps by taking some of the load off the origin server, especially during traffic spikes, and it can improve reliability. It doesn’t increase the size of the origin server; in fact, it reduces direct requests to it. DNS resolution is still used to locate the nearest edge server, not eliminated. And it doesn’t force everyone to download from a single server—they’re distributed across many edge locations.
Question 2
Which of the following is the correct unit for upload speed?
Correct Answer:
50 Mbps
Explanation:
When we talk about internet upload speeds, the rate is measured in bits per second, not bytes per second. The standard unit for consumer speeds is megabits per second, abbreviated Mbps. So 50 Mbps means 50 million bits transmitted every second, which is how internet providers describe upload (and download) speeds. Other units would describe data in bytes per second. Megabytes per second (MBps) is eight times larger than Mbps, since 1 byte equals 8 bits, so 50 MBps would be 400 Mbps in the same scale. Gigabytes per second (GBps) would be far faster than typical home internet, and kilobytes per second (KBps) is a much slower rate. Because upload speed is conventionally expressed in megabits per second, the correct choice is the unit Mbps.
Question 3
What information does a typical data packet contain?
Correct Answer:
A header with routing information and a payload with the actual data.
Explanation:
Data is sent over networks in small chunks called packets, and each packet carries two main parts: a header and a payload. The header holds routing and control information that helps the network move the packet from the sender to the correct recipient, including addresses, sequencing data, and error-checking fields. The payload is the actual data you want to deliver, like part of a file or a piece of a web page. Without a header, routers wouldn’t know where to send the packet or how to reassemble the message, and without a payload there would be no useful data to deliver. Choices that suggest only the data or that include unrelated items (like a list of devices or a password) don’t describe how standard packets are structured.
Question 4
What does a 200 status code indicate?
Correct Answer:
The request was successful and the server returned the requested resource.
Explanation:
A 200 status code means the request was successful and the server returned the requested resource. This signals that everything went through as intended and you can expect the response body to contain the data you asked for. It’s part of the 2xx family that covers successful responses; 200 is the most common form when you fetch something, like a web page or data. Sometimes a request is successful but doesn’t need to return content, in which case you might see a 204 No Content. Other status codes describe different outcomes: 404 indicates the resource isn’t found; 5xx codes mean the server ran into an error; 3xx codes indicate a redirect to another URL.
Question 5
Which threat involves redirecting users to fake sites by tampering with DNS or hosts files?
Correct Answer:
Pharming
Explanation:
Pharming is the tactic of redirecting you to fraudulent websites by tampering with how domain names are resolved. Attackers can alter DNS records or modify the host file on your computer so that a legitimate URL resolves to an attacker‑controlled IP address. Even if you type the correct address or click a normal link, you’ll end up at a fake site, which can steal credentials or deliver malware. This network- or machine-level redirection is unique to pharming. Phishing relies on tricking you into visiting a malicious site via deceptive messages, malware is software that causes harm, and social engineering is the broader manipulation of people to reveal information or take action. The described scenario matches pharming because it centers on redirecting users through DNS or hosts-file changes.
Question 1
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Prepare with the Khan Academy The Internet Practice Test practice quiz. This question bank includes 10 questions covering packet, contain, swap, khan, and academy. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Khan Academy The Internet Practice Test

This practice set contains 10 questions from the matching question bank and focuses on packet, contain, swap, khan, and academy. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

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