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Define network tools, devices and topologies and use them

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Here are some definitions and examples of network tools, devices and topologies:

1. Network Tools:

Network tools are software applications or hardware devices that are used to manage, monitor and troubleshoot computer networks. Some examples of network tools include:
Network analyzers: Network analyzers are software or hardware tools used to capture and analyze network traffic, diagnose network problems and monitor network performance.
packet sniffers: Packet sniffers are tools used to intercept and analyze data packets as they pass through and network, helping to identify problems security issues and other network-related issues.
Ping and traceroute: Ping and traceroute are network diagnostic tools used to test connectivity between two devices on a network.
Network scanners: Network scanners are used to scan for active hosts and services on a network. 

2. Network devices: 

Network devices are physical hardware components that are used to connect devices to a network and enable communication between them. Some examples of network devices include:
Routers: Routers are devices that forward data packets between computer networks, allowing different networks to communicate with each other.
Switches: Switches are devices that connect multiple devices within a network, allowing them to communicate with each other.
Hubs: Hubs are devices that connect multiple devices within a network, but unlike switches, they do not have the ability to filter or segment traffic.
Firewalls: Firewalls are security devices that monitor and filter network traffic, helping to protect against unauthorized access and other security threats. 

3. Network Topologies:

Network topologies refer to the physical refer to the physical or logical arrangement of device and connections within a computer network. Some common network topologies include:
Bus topology: In the bus topology, devices are connected to a single cable, creating a linear arrangement.
Star topology: In a star topology, devices are connected to a central hub or switch, creating a hub-and-spoke arrangement.
Mesh topology: In a mesh topology, devices are connected to multiple other devices, creating a highly interconnected network.
Ring topology: In a ring topology, devices are connected in a closed loop, with each device connected to the next device in the loop.

These are just a few examples of network tools, devices and topologies. Understanding these concepts is important for designing and maintaining computer networks, as well as troubleshooting network issues when they arise.

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