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Ready-made multiple-choice practice quizzes, hand-checked. Take any free quiz online — every answer comes with an explanation, and every quiz page has a full answer key to revise from.
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Free · no sign-up · no time limit
Ready-made multiple-choice practice quizzes, hand-checked. Take any free quiz online — every answer comes with an explanation, and every quiz page has a full answer key to revise from.
IT
Test your understanding of the technologies and protocols that allow devices, websites, and services to communicate across the Internet. Answer each question to see whether you got it right, with an explanation every time.
A free 12-question multiple-choice practice test on IT. Each question has one correct answer and a short explanation, and the full answer key below the player doubles as a study sheet. No account, no time limit — take it as often as you like.
This is a free, 12-question multiple-choice quiz. Answer each question to see whether you got it right, with an explanation for every answer. There is no sign-up and no time limit — take it as many times as you like, and use the answer key above to revise before or after.
Correct answer: BTo identify a device or network interface for communication
IP addresses provide network-layer addressing so data packets can be routed between devices across interconnected networks.
Correct answer: CIt translates the domain name into an IP address
DNS acts like a distributed directory, allowing applications to discover the IP addresses associated with human-readable domain names.
Correct answer: ATo forward packets between different networks
Routers examine addressing information in packets and determine where to forward them so they can travel toward their destination.
Correct answer: DTCP
TCP uses mechanisms such as acknowledgments, sequence numbers, and retransmissions to provide reliable and ordered data delivery.
Correct answer: ADividing data into smaller units that can travel independently through a network
Packet switching allows network resources to be shared efficiently because individual packets can be routed separately and reassembled at the destination.
Correct answer: BIt uses TLS to protect communication between the client and server
HTTPS combines HTTP with TLS, which provides encryption and helps protect the integrity and authenticity of communication.
Correct answer: CConnectivity between the user's network and the wider Internet
An ISP connects customers to its network and provides routes through which their traffic can reach other networks on the Internet.
Correct answer: AThe browser asks the server to return a specified resource
GET is an HTTP method used to request a representation of a resource, such as a web page, image, or API response.
Correct answer: BThe Internet is a network infrastructure, while the Web is a service that operates over it
The Internet is the global system of interconnected networks, while the Web is one of many services that use that infrastructure.
Correct answer: CRouters can make forwarding decisions based on current network routes and conditions
Internet routing is dynamic, so forwarding paths can change because of routing updates, network topology, failures, or traffic-management decisions.
Correct answer: DTo store previously retrieved resources so they may be reused
Caching can reduce loading time and network traffic by allowing suitable previously downloaded resources to be used again.
Correct answer: CDistribute content across multiple locations closer to users
CDNs place or cache content at geographically distributed servers, which can reduce latency and lessen the load on the original server.