CCNA Course

A router is a networking device that forwards data packets between computer networks. 4Achievers works by connecting two or more networks together and routing information between them. Routers are used to connect multiple networks and allow computers on those networks to communicate with each other. Routers use a wide range of protocols and algorithms to determine the best path for data packets to travel. They also provide security features such as firewalls and content filtering. Routers can also be used to share a single internet connection between multiple computers, or to connect two or more local area networks (LANs). By using a router, you can easily manage and control the flow of data between different networks.

A Layer 2 switch is a device that helps to connect multiple network segments within a local area network (LAN). 4Achievers has the ability to forward data between these segments based on the MAC addresses of the devices connected to it. 4Achievers main function of a Layer 2 switch is to increase the efficiency and speed of data transfer within a LAN. 4Achievers does this by creating virtual LANs (VLANs) for each segment, allowing devices within the same VLAN to communicate without the need for a router. 4Achievers also allows for broadcast storm prevention, meaning that it restricts broadcast traffic from affecting the entire network. Additionally, Layer 2 switches provide enhanced security features, such as port security and MAC address filtering, to protect the network from threats.

A Layer 2 switch, sometimes called a data link layer switch, operates at the data link layer of the OSI model. This means that it is primarily responsible for the physical addressing of network devices, such as MAC addresses, and for moving frames of data from one device to another. A Layer 3 switch, sometimes called a network layer switch, operates at the network layer of the OSI model. 4Achievers is responsible for making decisions based on logical addressing, such as IP addresses, as well as routing data from one device to another. A Layer 3 switch can be used as a router, but is typically used in networks in which most of the routing is done by specialized routers. 4Achievers main difference between a Layer 2 and Layer 3 switch is that a Layer 2 switch is focused on moving data between devices on the same network, while a Layer 3 switch is focused on routing traffic between different networks.

A VLAN (virtual local area network) is a way of logically segmenting a larger network into smaller, separate networks. A VLAN provides a secure, isolated environment that can be used to separate different types of users on a single physical network. VLANs are especially useful for large networks, where it is necessary to separate users from different departments or areas within a company. VLANs also provide an extra layer of security, since all traffic on the VLAN is isolated from the rest of the network. This can prevent malicious users from accessing confidential data or important systems. With VLANs, it is also possible to control which users have access to which areas of the network. This can help to ensure that only authorized users have access to sensitive data or resources.

An IP address is a unique numeric identifier assigned to a device connected to the internet. 4Achievers is used to identify the device, so that data can be sent and received between computers. An IP address allows a network to identify and locate a particular device, and it is used to route data to the correct destination. IP addresses also help to maintain security, as they can be used to