Bridges, Wi-Fi Range Extenders, and Modems

1. Wired/Wireless Bridge

• Definition: A bridge is a networking device that connects two or more network segments, allowing them to function as a single network. Bridges can be wired or wireless.
• Bridge Mode:
  • Purpose: Used to connect and extend two networks, typically within the same local area network (LAN).
  • Function: In bridge mode, the device connects two network segments and forwards traffic between them, making the devices on both segments appear as if they are on the same network.
• Wireless Bridge Mode:
  • Purpose: Similar to bridge mode but operates wirelessly.
  • Function: Connects two wireless networks or a wireless network to a wired network, extending coverage and allowing devices from different networks to communicate with each other.
• Bridge Router:
  • DHCP: Off. In bridge mode, the router does not assign IP addresses. IP addressing is managed by another device on the network, typically the main router.
  • Firewall: Off. The bridge router does not provide firewall protection. Network security is managed by another device.
  • NAT (Network Address Translation): Off. NAT is not used in bridge mode. The bridge router passes traffic without modifying IP addresses.

2. Wi-Fi Range Extender

• Definition: A Wi-Fi Range Extender is a device designed to extend the coverage area of a wireless network.
• Function:
  • Signal Amplification: Receives the existing Wi-Fi signal from a router or access point and rebroadcasts it to areas with weak or no signal.
  • Improves Coverage: Helps eliminate dead zones in a wireless network by amplifying and extending the reach of the Wi-Fi signal.
• Deployment:
  • Location: Place the range extender within the range of the existing Wi-Fi network to ensure it can pick up and extend the signal effectively.
  • Configuration: Typically involves connecting to the extender’s web interface or app to set it up and link it to the existing network.

3. Modem

• Definition: A modem (modulator-demodulator) is a device that converts digital signals from a computer into analog signals for transmission over phone lines, and vice versa.
• Function:
  • Demodulation: Converts incoming analog signals (from the internet service provider) into digital signals that the computer can understand.
  • Modulation: Converts outgoing digital signals (from the computer) into analog signals suitable for transmission over phone lines or other communication mediums.
• Operation:
  • Analog to Digital: Demodulates analog signals into digital signals so that digital devices can read and process the information.
  • Digital to Analog: Modulates digital signals into analog signals for transmission over traditional communication lines.

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