COMPUTER NETWORKING

Detailed explanation-1: -The physical layer is only concerned with wired network connections. Explanation: The correct answer is False. The physical layer provides the means to transport bits over the network whether the network is wired or wireless.

Detailed explanation-2: -The physical layer deals with bit-level transmission between different devices and supports electrical or mechanical interfaces connecting to the physical medium for synchronized communication.

Detailed explanation-3: -The physical layer is responsible for sending computer bits from one device to another along the network. Its role is determining how physical connections to the network are set up, as well as how bits are represented into predictable signals–as they are transmitted either electrically, optically or by radio waves.

Detailed explanation-4: -The physical layer defines the relationship between a device and a transmission medium, such as a copper or optical cable. This includes the layout of pins, voltages, cable specifications, hubs, repeaters, network adapters, host bus adapters (HBA used in storage area networks) and more.