Network Hardware
Network Hardware
Routers
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Routers are central devices that help in connecting multiple networks together.
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They are responsible for managing the best path for data transfer between networks.
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They ensure that data packets reach their intended destinations through the most effective and efficient route.
Switches
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Switches are crucial for connecting multiple devices to a single network.
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They control data flow within the network, ensuring that data reaches the right destination within the network.
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Unlike routers, switches work within a single network and not across different networks.
Hubs
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Hubs are often used as a simpler connector for small scale networks.
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They transmit data to all devices in a network, regardless of the destination.
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Hubs are less efficient than switches, as they don’t direct data, leading to higher network traffic.
Network Interface Card (NIC)
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Network Interface Card (NIC) is a crucial hardware component located inside the computer.
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A NIC provides the physical connection to a network by translating data into a form transmittable over the network.
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Each NIC has a unique MAC address for identification purposes.
Access Points
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Access points are used in wireless networks to transmit and receive wireless signals.
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They serve as the communication hub by linking wireless devices to a wired network.
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Basic access points simply extend the reach of an existing network, while more advanced ones could provide additional functionalities like security features.
Modems
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Modems are devices that modulate (convert) digital signals to analogue and demodulate (convert) analogue signals to digital.
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They enable data to be transmitted over communication lines such as phone lines or cable.
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The word “Modem” is derived from its function, which is MOdulator/DEModulator.
Firewall
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Firewalls are network security devices that monitor and control incoming and outgoing network traffic.
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They establish a barrier between secured internal networks and untrusted external networks, such as the internet.
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They are an important part of a network’s defense system, blocking unauthorized access while allowing legitimate communication.