Ethernet network bandwidth
each version of Ethernet has a maximum cable length limit (that is, the length without amplification). Signals within this range can propagate normally, and signals beyond this range cannot propagate
in order to allow the construction of a larger network, repeaters can be used to connect multiple cables. Repeater is a physical layer device, which can receive, amplify and retransmit signals in two directions
extended data
several common Ethernet interface types
1. SC optical fiber interface
SC optical fiber interface has been applied in the era of 100base TX Ethernet, so it was called 100base FX at that time (F is the abbreviation of optical fiber). However, at that time, because the performance was not more prominent than twisted pair, but the cost was higher, so it was not popularized. Now the instry vigorously promotes gigabit network, and SC optical fiber interface is re valued
2. RJ-45 interface
this kind of interface is the most common network equipment interface, commonly known as "crystal head", and the professional term is RJ-45 connector, which belongs to the type of twisted pair Ethernet interface. RJ-45 plug can only be inserted along the fixed direction, and a plastic spring piece is set to be stuck with RJ-45 slot to prevent it from falling off
3. FDDI interface
FDDI has the highest transmission rate among the mature LAN technologies. It has the characteristics of timed token protocol, supports a variety of topologies, and its transmission medium is optical fiber. Fiber distributed data interface (FDDI) is a set of protocols developed by American National Organization for Standardization (ANSI) to transmit digital signals on optical cables
reference source: Network Ethernet interface
1. First, we click Start - control panel
mining refers to the process of using computer hardware to calculate the location of bitcoin and obtain bitcoin. When mining, we need to confirm the virtual currency transaction. In the process of transaction, we run complex operations. Miners use computers to perform these operations, and then get the virtual currency reward
mining, the process of computing the location of bitcoin by computer hardware and obtaining it, is called mining. Every other point in time, the bitcoin system will generate a random code on the system node. All computers in the Internet can search for this code. Whoever finds this code will generate a block and then get a bitcoin. This process is often called mining. Computing this random code requires a lot of GPU operations, so the miners purchase a large number of graphics cards to get bitcoin profits more quickly.
After reading the answers of other respondents, I really want to laugh. It's not terrible to pretend that I don't understand. What's terrible is to answer blindly. There's something wrong with this question. The burst of 5.7 billion yuan has nothing to do with a drop of 10 cents. It can even be said that its disappearance is e to the sharp rise. So where is the decline? If bitcoin really falls, it will not be 5.7 billion capital washed away, it will be tens of billions, hundreds of billions of capital evaporated, those who talk about trends and development, please study the capital and stock market well, and by the way, please search for the meaning of the word "burst", no culture is too terrible
in addition, I would like to make a digression. Recently, a hot topic is fund. In 2021, the annual meeting is more or less a national fund. In 2020, the fund manager is still a good active fund. Even if the position is not changed, the annual yield will reach at least 40%, but this does not mean that this year is still OK, It's not that everyone can make money playing with funds. it's similar to the nature of stocks. Index funds, stock funds and even active funds are risky. I think many people say that they should get on the bus quickly. They are really worried about your funds of course, 2021 may be a bull market. It is estimated that the whole network has spread, many people are rubbing their hands to make a lot of money, but I can't do much. I just advise you not to go with the flow too much, don't be greedy, and don't think you are. That's all. Good luck
in Word2000, create a new word document and click AutoCorrect on the tools menu. Open the AutoCorrect dialog box, select the AutoFormat as you type tab, and check "title" in "auto apply as you type" (in Word2002, check "built in Title Style")“ After "OK", return to the word window, input the title content and set it. Press enter twice in succession, and the title just entered will be automatically formatted
if you are not satisfied with the format of this title, you can modify it. Select the style command in the format menu, open the style dialog box, select the title 1 format, and click change to open the change style dialog box. To make a difference, you can change the name of the style, such as changing the name to automatic Title style. Click the "format" button to pop up the "format" menu. You can modify the "font", "paragraph" and so on to set the title style. Finally, click the "OK" button to set the title format as you need
tip:
1. Be sure to check the "add to template" check box in the "style" dialog box, so that the modification of style can be applied to all documents
2. Change the alignment to center in paragraph settings
3. After the title is automatically formatted, press "Ctrl + Z" or "backspace" to cancel the title format
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use system ("command & gt; Then read the information in the file
that's fine.