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new ccna certification.4.2 Basic Topics 43In this case, a WirelessRepeater can be used. A wireless repeater is actually an AP, but is not connected to a wired network to connect to a distributed network. However, the Wireless Repeater overlaps with an AP that is physically connected to the distributed network. To achieve the final result the overlap should be 50%. Figure 4-7 shows such an example. When a client is out of the AP's service range, the repeater enables the client to connect to that network.From the client to the AP'sFigure 4.7The AP can be used as a repeater, which is how the Cisco solution works. The problem is that a CiscoAP is required as the upstream "root" device, and only one SSID is supported in repeater mode. in addition, the total throughput is halved for each hop through the repeater.3. Outdoor Wireless BridgeWhen there are two or more LANs within a few kilometers of each other and you want to connect them together, you can use a wireless bridge. Since it is "bridged", the technology works at layer 2, which means that the LAN does not route traffic and has no routing table.A LAN can be connected directly to another LAN in a point-to-point configuration, as shown in Figure 4-8. Or multiple LANs can be connected together through a central hub, as shown in Figure 4.9. Figure 4-8 Point-to-Point Wireless Bridge Topology44 Chapter 4 Wireless LAN Technologies and Topologies4.2 Basic Topics 45