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Anonymous users2024-02-06There are three common criteria:
Using the 5GHz band, the transmission speed is 54Mbps, which is not compatible with it.
Using the frequency band, the transmission speed is 11Mbps
Using the frequency band, the transmission speed is 54Mbps, which is backward compatible.
It is currently the most commonly used, but it has the strength of a next-generation standard.
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Anonymous users2024-02-05Wireless network. There are 6 kinds of standards, which are:
1. High-speed WLAN protocol, using 5G Hz.
Band. The maximum rate is 54Mbps, and the actual usage rate is about 22-26Mbps. It is not compatible with it, which is its biggest drawback.
2. The most popular WLAN protocol, using the Hertz frequency band. The maximum rate is 11 Mbps, and the actual usage rate is variable depending on distance and signal strength (1-2 Mbps within 150 meters, 11 Mbps within 50 meters). The lower speed of the wireless data network makes the cost of using the wireless data network acceptable to the general public.
3. WLAN-based QoS protocol, through which B and G can perform VoIP. In other words, it is a protocol that realizes the voice call function through a wireless data network. This protocol will be a powerful way for wireless data networks to compete with traditional mobile communication networks.
4. It is an extension on the same frequency band. Supports up to 54Mbps speed. Compatible. This standard has already outspoken to become the next step in wireless data networks.
5. Yes, the expansion is intended to be compatible with other standards in the 5G hertz band, such as HyperLAN 2 used in the European Union.
6. It is a new wireless data network security protocol, and the vulnerabilities in the WEP protocol that have been popularized will become a security hazard in the wireless data network.
A new TKIP protocol is proposed to solve this security problem.
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Anonymous users2024-02-041.Direct Sequence Spread Spectrum (DSS) with Complement Keying (CCK) encoding is used in open frequency bands and is physically modulated with a maximum data rate of 11Mbps without the need for straight line propagation.
2.It operates in the 5GHz U-NII frequency band, thus avoiding the congestion band, so it is relatively free of interference. The physical layer can reach 54 Mbps and the transport layer can reach 25 Mbps.
3.It is a continuation of the IEEE to solve the problem of interoperability with the IEEE, both of which also use common frequency bands, with high interoperability, and are optimistic about being a new generation of WLAN standards.
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Anonymous users2024-02-031) When a host is connected to two networks at the same time, the host must have two corresponding IP addresses at the same time, and its network slippery network number net-id is different. This type of host is called a multihomed host.
2) Several LANs connected by ** device or bridge are still one network, so these LANs all have the same network number net-id.
3) In the IP address, all the networks assigned to the network number Net-ID (whether it is a small range of local area network, or a wide area network covering a large geographical range, FR WAN) are equal, see the figure, the host and router interfaces in each network are in the same network segment, with the same NET-ID.
4) IP addresses can sometimes be used to indicate the address of a single network, and the host number field can be set to all zero. For example, 10 0 0 0, 175 89 0 0
1) The network number in the IP address of the computer or router connected to a local area network must be the same.
2) A LAN interconnected with a bridge (which only works at the link layer) is still a LAN.
3) Routers always have two or more IP addresses.
4) When two routers are connected directly, this segment of the connection constitutes a special "network" that contains only one line (as shown in the diagram nl, n2 and n3). The reason why it is "network" is because it has a Janen IP address.
2. Check whether the wireless network card driver is successfully installed in the computer device manager, and check whether the wireless network card has been started, the method is to click "My computer (win7 system is "computer") on the desktop, and then select "Properties" - Hardware "" - Device Manager, there should be a wireless network card adapter under normal circumstances. >>>More
1, the landlord don't panic, the wireless network is the need for professionals to go to your home to press, will give you a similar to a U disk thing, the specific steps are not easy to say, you can play the wireless network network operator's **consultation,**It seems to be 10086,Find manual service,If you have a professional**, it's better.。。 >>>More
As a result, the wireless LAN will be affected by the radio frequency interference of some sudden wireless devices in the same frequency band in the actual operating environment. Such as microwave ovens, Bluetooth mobile phone signals are in the frequency band. Therefore, when working on a wireless LAN, suddenly turning on a microwave oven in its area, or using a Bluetooth headset on a Bluetooth mobile phone, or suddenly having other wireless devices running in the same frequency band will interfere with the wireless signal of the wireless LAN. >>>More
Wi-Fi can be used at the same time as a wired network, but not within the same network. >>>More
Hehe, the encryption method set in your wireless router is different from the encryption method in your computer. Win7 system,Please find the "Manage Wireless Network" menu in the properties of the network,Check the properties of your wireless network profile,There is a security tab,There is an encryption method in it,Remember to modify it to the same as the encryption method in your router,Router and computer you can modify one side at will。 If it's still like this after the change, remember to restart it and take a look, so be it.