Which one of the following is not a function of the network layer?
Correct answer: D. error control
- A. routing
- B. inter-networking
- C. congestion control
- D. error control
Explanation
Error control is not a function of the network layer. It is a responsibility of the transport layer. The transport layer is responsible for ensuring reliable data delivery by detecting and correcting errors that may occur during transmission.
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Networking covers LAN, MAN, WAN and wireless networks, network topologies, transmission media, devices such as switches, routers and modems, and the OSI and TCP/IP models. Internet concepts include IP addresses, DNS, URLs, web browsers, email, protocols such as HTTP, HTTPS, FTP and SMTP, and basic network security.
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