Module 1 Lesson 3 Network Topologies

Network Topology

refers to the physical or logical layout of a computer network. It describes how devices and nodes are connected and how data flows through the network. There are several types including bus, star, ring, mesh, and hybrid.

Physical Topology

refers to the physical layout of devices and cables in a network. It describes how devices are physically connected and the physical path that data takes through the network.

Logical Topology

refers to the way in which data is transmitted between devices on a network. It describes the path that data takes as it moves between devices, and the rules that govern how data is transmitted.

Point-to-Point Connection

is a type of communication link that connects two nodes directly, without any intermediate devices or other network elements. It is a dedicated link between two devices, allowing for fast and secure data transfer.

Multipoint Connection

refers to a communication setup where multiple devices or endpoints can participate in a network connection simultaneously. It allows multiple nodes to establish communication links and exchange data with each other.

Radiated Connection

in networks refers to a wireless connection between devices that uses radio waves to transmit data. This type of connection is commonly used in Wi-Fi networks and allows devices to communicate with each other without the need for physical cables.

Physical Bus Topology

is a type of network topology in which all devices are connected to a single cable. It serves as a shared communication medium, allowing data to be transmitted between devices.

Unicast

refers to a one-to-one transmission from one point in the network to another point; that is, one sender and one receiver.

Multicast

is a network communication method where a single sender transmits data to multiple recipients simultaneously. It is often used for efficient distribution of information to a group of recipients who have expressed interest in receiving the data. The sender sends a single copy of the data, and it gets replicated at network nodes only when necessary, reducing network bandwidth consumption.

Broadcast

is a method of sending a message or data packet to all devices on a network simultaneously. It is commonly used in network protocols to announce the presence of a device or to send important information to all devices on the network.

Terminator

in computer networks is a device that is used to prevent signal reflection at the end of a transmission line. It is typically a resistor with a value of 50 ohms.

T-Connector

is a type of connector used in computer networks to connect three cables together. It has a T-shaped body with three female ports, one on the top and two on the sides. It is also known as a T-Adaptor.

Physical Star Topology

is a type of network topology where all devices are connected to a central hub or switch using point-to-point connections. The hub or switch acts as a central point of communication, allowing devices to communicate with each other through the hub or switch.

Physical Ring Topology

is a type of network topology in which all the devices are connected in a circular shape, forming a closed loop. The data flows in one direction around the ring, and each device acts as a repeater to amplify the signal and pass it on to the next device.

Physical Ring Topology

is a type of network topology in which all the devices are connected in a circular shape, forming a closed loop. The data flows in one direction around the ring, and each device acts as a repeater to amplify the signal and pass it on to the next device.

Dual Ring Topology

is a network topology where two ring networks are connected together, forming a redundant ring. This topology provides fault tolerance and redundancy, as data can be transmitted in both directions around the rings. If one ring fails, the other ring can still transmit data, ensuring that the network remains operational.

Physical Tree Topology

is a type of network topology where devices are arranged in a hierarchical structure resembling a tree. It consists of a root node, which is connected to one or more nodes at the next level, and each of these nodes is connected to one or more nodes at the next level, and so on.

Physical Mesh Topology

is a network topology where each device is connected to every other device in the network through a dedicated point-to-point link. This type of topology provides high redundancy and fault tolerance, but can be expensive to implement and maintain.

Hybrid Topology

is a combination of two or more different types of network topologies, such as star, bus, ring, or mesh. It is often used in large networks to take advantage of the benefits of multiple topologies while minimizing their drawbacks.

Logical Bus Topology

refers to a network configuration where devices are interconnected through a shared communication pathway, forming a linear arrangement. In this setup, data transmission occurs along the interconnected devices without the need for any explicit physical structure or layout.

Logical Ring Topology

is a network topology where the nodes are connected in a circular manner, but the physical connections may not necessarily be in the same configuration. Instead, the data is transmitted in a circular path, where each node receives the data and passes it on to the next node until it reaches its destination. This makes it logical because the data travels in a circular path, even though the physical connections may not be in a circle shape.

Logical Star Topology

is a network topology in which all devices are connected to a central device, such as a switch or a router, but the physical connections between the devices may not necessarily be in the same configuration. Instead, the devices may be connected in a variety of ways, but they communicate with each other as if they were connected in this configuration.