Which layer is responsible for the transmission of raw bits over a physical medium in the OSI model?
Correct answer: D. Physical layer
- A. Application layer
- B. Presentation layer
- C. Network layer
- D. Physical layer
Explanation
The Physical layer handles the electrical, optical, or electromagnetic signals that represent bits (0s and 1s). It defines aspects like voltages, cabling, connectors, and how the signals are sent and received.
Last updated
About Networking and Internet
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.
Practise Networking and Internet
452 free Networking and Internet MCQs from Computer Science and IT, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Computer Science and IT questions like this
Computer Science and IT is on 40 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.