
How the Web Works – IB Computer Science
Authored by Jonathan Clark
Computers
11th Grade

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary job of DNS?
Encrypt website data
Improve download speed
Convert domain names into IP addresses
Manage browser settings
Answer explanation
The primary job of DNS (Domain Name System) is to convert domain names into IP addresses, allowing browsers to locate and access websites. This is essential for internet navigation.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A DNS server translates human-readable domain names into machine-readable IP addresses.
True
False
Answer explanation
True. A DNS server's primary function is to convert human-readable domain names, like www.example.com, into machine-readable IP addresses, enabling browsers to locate and access websites.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step your browser takes when you type in a URL?
Loads the homepage
Sends a request to the DNS resolver
Renders JavaScript
Opens Developer Tools
Answer explanation
When you type a URL, the first step your browser takes is to send a request to the DNS resolver to translate the domain name into an IP address, enabling it to locate the server hosting the website.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is responsible for reliable delivery of data over the internet?
IP
TCP
HTML
CSS
Answer explanation
TCP (Transmission Control Protocol) ensures reliable delivery of data over the internet by establishing a connection and managing data transmission, while IP (Internet Protocol) handles addressing and routing.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which protocol is best for transferring large files between computers?
TCP
FTP
HTTP
DNS
Answer explanation
FTP (File Transfer Protocol) is specifically designed for transferring large files between computers, offering features like resume capability and efficient data transfer, making it the best choice compared to TCP, HTTP, and DNS.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The Internet Protocol (IP) guarantees the data packets will arrive in order.
True
False
Answer explanation
The Internet Protocol (IP) does not guarantee that data packets will arrive in order. Packets can take different paths to their destination, leading to potential reordering. Therefore, the correct answer is False.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an IP address?
A security feature
A numerical address used to identify a device on the internet
A browser extension
A type of webpage
Answer explanation
An IP address is a numerical address used to identify a device on the internet, allowing it to communicate with other devices. This makes it essential for data transmission and connectivity.
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