new ccna book

new ccna book. Has a larger coverage area than a WPAN - within 100 meters from the AP to the client. Greater power output is required to reach greater distances. Non-personal networks* can have more clients, to be more precise. Unlike WPANs, WLANs are very flexible, so can have more than 8 active devices/clients. In aWLANs often have a mix of dual-band wireless APs, laptops and desktop computers. WLANs can operate in both the 2.4GHz band of the 802.1lb/g standard and the 5GHz band of the 802.11a standard. Of these protocols emerging in WLANs, 802.11b is the first to enter the market. Other protocols, such as 802.11a, came to market later. Today the 802.11a/b/g/n WLAN standards can be found in networks all over the world. The frequency bands used by 802.11a/b/g/n are all license-free.Since WLANs cover a much larger area, they require a greater power output compared to WPANs. The presence of WLANs3.2 Basic Themes 37problem is that the power rules set by the regulatory authorities cannot be exceeded. In the US, for example, it is the FCC that sets the transmit power levels.WLANs are able to provide mobile clients with access to network resources. As a result, WLANs support multiple users. In addition to wireless users, wireless print servers, presentation servers, and storage devices can also be supported. Many devices can be interconnected or share information with each other, often through a distributed system such as a local area network. This makes WLANs more complex than WPANs.The fact that APs and clients are dual-band makes WLANs more flexible. This makes it simpler to deploy different transmissions in different areas, while still keeping the majority of clients operational.3. WMAN