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the basic structure of a wired network. Therefore, wireless network applications can be performed on a new or existing wiring interface, without the overhead that is commonly required for LAN scaling users. Although wireless has such advantages, you still need to consider some issues before deciding whether the wireless network can be used as the best connection solution. These problems include: ◆ Wired Ethernet is usually faster than most Wireless Networks ◆ The blocking and interference modes

devices to the Internet. First, we will introduce some basic knowledge about wireless Internet access. Wireless networks use radio waves like mobile phones, TVs, and radios. In fact, the process of communication through a wireless network is very similar to two-way radio communication. The specific process is as follows: The wireless adapter of the computer converts the data into a radio signal and sends it out using an antenna. The wireless router r

network is composed of the following parts: (1) the transmission latency is the time required by the host or vro to send data frames, that is, from the first bit of the data frame to be sent, the time required to send the last bit of the frame. Transmission latency is also known as transmission latency. Transmission latency = data frame length (B)/transmission rate (B/s ). For a certain network, the transmission latency is not fixed, but proportional to the length of the sent frame and inversel

starts from three handshakes. we can see that the status of the first three packets (Flags) is: [S], [S.], [.] First, the client sends a 10-digit serial number to the server. after receiving the serial number, the server + 1 is returned. the client checks whether the serial number is correct, returns 1 to the server. According to the above description, we know that the three packages meet the requirements: seq + 1 = ack of the second package; ack = 1 of the third package After the connection is

I can not understand, the end of the company's HR to call me, told me that during the assessment of your work enthusiasm is not too high, well, indeed, I sometimes watch a day of work video tutorial, she said, I do not make waves, I resign, I calm.The gap between ideal and reality is sometimes unacceptable, entry three months, leaving, for me, is not easy, although the heart of the strong awareness can not be in such a little bit of life, but the tho

Directory one, network Protocol II, TCP (transmission Control Protocol, transmission protocol) TCP Header Format Three handshakes and four waves in the TCP protocol TCP Message Capture tool Third, HTTP (hypertext Transfer Protocol, Hypertext Transfer Protocol) Request message Structure Sample Request Message Request message Parameters Detailed Response message Structure Sample Response message Detaile

??My intuition is further confirmed that electromagnetic waves can be shielded, I think the gravitational waves can also. This is the original.http://blog.csdn.net/hawksoft/article/details/49406479Here's the latest news:US scientists detect gravitational waves to confirm Einstein's century-old prophecyHttp://news.sohu.com/20160212/n437232582.shtmlGravitational

The structure and function of the OSI and TCP/IP layers, what are the protocols Architecture of the five-tier protocol 1 Application Layer Domain Name System HTTP protocol 2 Transport Layer Transport layer mainly uses the following two kinds of protocols The main features of UDP The main features of TCP 3 Network Layer 4 Data Link Layer 5 Physical Layer Summarize Two TCP

not use traps, and so B with traps. Because the trap skill will be interrupted by the small wolf, causing the waste of the skill cooling time. In addition, the mocking skill can also knock down the wolf's Blood bar, this can make good use of. General two number with tacit understanding can get about 1500 loam. 2, after the end of time, use the transfer skills below the interface to return to the original location. Point NPC to obtain resource rewards, then point to start defense, depen

to the OSI reference Model of the physical layer, the data link layer and the TCP/IP model of the network interface layer corresponding to the principle of convenient understanding, Often take a compromise approach, using a five-layer protocol principle architecture, as shown in Relationship between layers and layers Layers and layers are called each other, and the same layer communicates with each other. The lower layer, the closer to the hardware, the higher the upper layer,

, mostly passive label, the application range is less than 1m, the disadvantage is that the information is small, and only suitable for low-speed scene 2. Medium-High Frequency electronic label, also mostly passive electronic label, must be in the range of the reader antenna radiation; ultra-high-frequency wireless microwave technology, can be active or passive, for the active, the reader's antenna radiation will wake up its power supply work, and with the reader to send informationRFID: Radio f

External review of Relativity1. What is light wave?The light wave is the spiral motion waveform of the optical particles! As long as the light in the instantaneous motion of the particle, actually means that the light wave is the motion waveform of the particles. Physical experiments have shown that light waves have particle properties and fluctuating properties. It says that light particles are also waves,

and time sequence from electromagnetic waves. The chip is used to store electronic code (and some also have logical computing functions ). A label is usually relatively small, and it is attached to an object to uniquely identify the target object. A tag is usually in sleep state and can be activated or disabled by a reader. Reader(Reader): A device that performs read/write operations on RFID tags. The device can activate or disable tags. The devic

Song of the sea In the morning, I am alone at this seaside.I can't recall the time of the past.Ah, look at the breeze blowing the white cloudsAh, waves beat the shell on the coast with silver flashes.At dusk I am wandering by the Sea aloneAn unforgettable figure emerges in my mindAh ups and downs of wavesAh light moonlight cold starsMusic ......In the middle of the night, I am wandering by the Sea aloneA sea breeze rolled up the

than words. The important scenario in this article "Fisherman" is that "the world is muddy and everyone is drunk". In software, we may wish to say that there are many fragments of memory that are about to run out to compare the world with turbidity, all people are drunk. According to his father-in-law's mind, "the water of the waves is clear, and the water of the waves is muddy, and the water of the

The following are from Wikipedia. The principle of radio technology is that changes in the current strength in the conductor will generate radio waves. With this phenomenon, information can be loaded onto radio waves through modulation. When the radio waves pass through the space to the receiver, the electromagnetic field changes caused by the radio

programs and watch more programs you like. At that time, people would say, "Aha, what a wonderful idea this is ." No, they will say, "Of course! Why is it any other way ?" Because any other method is stupid. The speed at which TV programs can be connected to families is quite limited. Today, at least in urban families in wealthy countries, such rules are changing. Although it still takes a long journey, many things will eventually emerge. In terms of shopping methods and habits, before people f

IOS-custom sawing background view with quartz2d As required by the project, uihas designed a jagged background image. The effects of program development are as follows: VcD4KPHA + fingerprint + pgltzybzcm9 "http://www.2cto.com/uploadfile/Collfiles/20150104/20150104091147176.jpg" alt = "\"> Then the two views overlap a little bit, that is, the view on the bottom moves on the Internet and overwrites the lower sawtooth of the view on the top, but the result is disappointing, for example:

that of other passive tags. When multiple readers are used, radio wave interference occurs between readers. In the United States, because 902 ~ Because of the large weekly band such as 928mhz, the weekly band is divided into multiple channels. As in the wireless network, multiple readers use different channels for communication to prevent interference. In Europe, as in Japan, only a small weekly band can be used. Therefore, before sending a mail, you must first check whether other readers nearb

Published on, Xu Xiaoming is a real spam. Post: Xu Xiaoming: Look at your blog over the past six months. You don't hurt yourself. I blushing for you. In March 20, when you die for 123, the vertex is 2295; In March 27, you said, "5 waves 5, the market has entered the final stage "; In the morning of March April 01, you once again stressed that this is 5 waves and there will be several months of adjustme