Computer Networks

Telephone lines transmit data one bit at a time over a single channel, which is the definition of serial transmission.

Full duplex communication allows data to be sent and received simultaneously, unlike half-duplex (one at a time) or simplex (one direction only).

Cyclic Redundancy Check (CRC) is the standard error detection method at the data link layer. Option B says 'cycle redundancy codes' which is a typo for 'cyclic', but refers to CRC.

ARPANET was the first network to implement dynamic routing, allowing packets to find paths based on current network conditions rather than fixed tables.

The data bus is the set of lines responsible for carrying the actual data between the CPU, memory, and I/O devices.

A transceiver is a device that combines both a transmitter and a receiver in a single unit, allowing it to both send and receive data.

LAN stands for Local Area Network, which is designed to connect computers within a small, localized area like a home, office, or building.

The primary purpose of a Local Area Network (LAN) is to allow connected computers to share resources, such as files, data, and peripheral devices like printers.

A multiplexer is commonly referred to as a data selector because its primary function is to select one data input from many and pass it to the output.

A computer network or data network is a telecommunications network which allows computers to exchange data. In computer networks, networked computing devices exchange data with each other using a data link. The connections between nodes are established using either cable media or wireless media. All the given options are correct. 

The multiplexer, shortened to “MUX” or “MPX”, is a combinational logic circuit designed to switch one of several input lines to a single common output line by the application of a control signal. Multiplexing (or muxing) is a way of sending multiple signals or streams of information over a communications link at the same time in the form of a single, complex signal; the receiver recovers the separate signals, a process called demultiplexing (or demuxing).

A star topology is a topology for a Local Area Network (LAN) in which all nodes are individually connected to a central connection point, like a hub or a switch. A star takes more cable than, e.g. a bus, but the benefit is that if a cable fails, only one node will be brought down.

When referring to a network, a multi-user system is a term commonly used to define a computer capable of allowing multiple users to connect to a network. Thus, large number of users are connected to a central system and data is kept on processing concept. All the given options are the features of multi-user computer network. 

It works on the principle of broadcasting and switching in which each station can transmit and receive.