The Internet is based on which three key technologies?

Question

BlackTom AI · Accepted Answer

Client/server computing, packet switching, and the development of communications standards for linking networks and computers form the Internet’s core foundation.

Relevant concepts:
- Client/server computing: a network architecture where clients (end-user devices or applications) request services and servers provide resources. This model enables distributed services (file servers, mail servers, web servers) and scalable resource sharing across the network.
- Packet switching: data is divided into small packets that are routed independently across the network. Packet switching provides efficient multiplexing of many users on shared links, resilience to link failures, and improved utilization compared with circuit-switching.
- Communications standards (protocols and interoperability): specifications such as TCP/IP, Ethernet, routing protocols, DNS and other standards let heterogeneous computers and networks interconnect and communicate reliably. Standards ensure common addressing, routing, error handling, and application interoperability.

Step-by-step reasoning:
1. Determine what “based on” means: the Internet is built from architectural models, switching methods, and interoperable protocols—not merely application services.
2. Packet switching is historically and technically essential: ARPANET and early research adopted packet switching as the switching paradigm.
3. Client/server computing supplies the architectural pattern for services (web, mail, file sharing) that run across the network.
4. Without communications standards (for addressing, routing, transport, link layers) networks could not be linked into a global Internet; TCP/IP is a central example, but the broader category is “standards for linking networks and computers.”

Why the correct answer is correct:
The chosen option explicitly names the architecture (client/server), the switching technique (packet switching), and the necessary standards/ protocols that allow many networks and devices to interoperate—precisely the foundational technologies.

Why other options are incorrect:
- "TCP/IP, HTML, and HTTP": HTML and HTTP are application-level web technologies, not foundational linking technologies.
- "TCP/IP, HTTP, and packet switching": HTTP is an application protocol; the option omits the client/server architecture and broader standards development.
- "Client/server computing, packet switching, and HTTP": HTTP is one application protocol, not the general class of communications standards required.
- "Email, instant messaging, and newsgroups": these are services built on the Internet, not underlying technologies.

Conclusion: The correct answer is Client/server computing, packet switching, and the development of communications standards for linking networks and computers. This matches the provided answer.

The Internet is based on which three key technologies? 单项选择题

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