What are the primary characteristics and best use cases for Bus, Star, Mesh, and other network topologies and communication methods like Simplex, as well as transmission media like fiber optic cables?

Here are the answers to your questions:

QUESTION 4
C. Bus topology.
A bus topology uses a single cable to connect all devices, requiring the least amount of cabling. However, a break in the main cable or a faulty connection can be very difficult to troubleshoot as the network grows, as it can bring down the entire network.

QUESTION 5
C. Central connecting device.
In a star topology, all workstations are connected to a central device, such as a hub or a switch. All communication between any two workstations must pass through this central connecting device.

QUESTION 6
D. Mesh topology.
A mesh topology provides the highest degree of redundancy because each device is connected to every other device. This creates multiple paths for data transmission, so if one path fails, data can be rerouted through another, ensuring high availability and fault tolerance.

QUESTION 7
C. Simplex.
A simplex communication system allows data to flow in only one direction, from the sender to the receiver, without any return path. Examples include traditional radio broadcasts or television transmissions.

QUESTION 8
C. Fibre optic cable.
Fibre optic cables transmit data by sending pulses of light through thin strands of glass or plastic. This method allows for very high bandwidth and long-distance transmission with minimal signal loss.

QUESTION 9
B. Convert signals between analog and digital forms.
A modem (modulator-demodulator) is a device that converts digital signals from a computer into analog signals suitable for transmission over analog communication lines (like telephone lines) and converts incoming analog signals back into digital signals for the computer.