DNS is a server that maps domain names to IP.
Therefore, every time you visit any website through a domain name for the first time, you must first ask the DNS server for the IP address corresponding to the domain name.
If you connect to the DNS server quickly, you will be able to return to IP quickly and your access to the website will be enhanced.
Actually, it is not recommended to modify DNS. Because local service providers assign a DNS server by default, this server is usually very fast. Only modify the DNS allocated by broadband operators when it is not easy to use.
It's true.
DNS is a server that maps domain names to IP.
Every time you visit any website for the first time through a domain name, you must first ask the DNS server for the IP address corresponding to the domain name.
The speed of connecting to DNS server is fast, so the speed of returning IP is also fast, and the speed of accessing websites is also enhanced.
DNS (Domain Name System) is a distributed database that maps domain names and IP addresses on the World Wide Web.
Users can access the Internet more conveniently without having to remember the IP number string that the machine can directly read.
The process of finally getting the IP address corresponding to the domain name through the domain name is called domain name resolution (or hostname resolution).
DNS protocol is implemented on top of UDP protocol, using port number 53.
In the RFC file, RFC 2 18 1 has a specification for DNS, and RFC 2 136 explains the dynamic update of DNS.
RFC 2308 explains the reverse caching of DNS queries.
Why do some people say that running legs will become thicker and running muscles will increase compensation? If running and rest are combined, muscles will become smaller after rest.
People can change! Why do some people say that I have changed! Environment will change a person, maybe they, not you. ...
Why do some people say that legs will get thicker, while others say that they won't? Because you don't stretch after exercise, your muscles will grow into blocks. Let's go to the gym. Many coaches ask you to do simple pilates or yoga for a while after jumping or running, which plays a certain stretching role. Even if there are new muscles, they are slender lines, not lumps. Leg lines will certainly be tight and slender.
Why do some people say that eating fish will make you smart? Because fish is rich in DHA. "DHA", commonly known as melatonin, is docosahexaenoic acid and a polyunsaturated fatty acid.
DHA is one of the essential fatty acids for human body. Essential fatty acids are essential for maintaining the function of various tissues, and when lacking, they will cause a series of symptoms, including growth retardation, abnormal scales on the panel, infertility, mental retardation and so on. As an essential fatty acid, DHA plays a more significant role in enhancing memory and thinking and improving intelligence. For example, population epidemiological studies have found that people with high DHA content in their bodies have strong psychological endurance and high intellectual development index.
People in China often say: Children become smarter by eating more fish. There is some truth in this statement.
Fish is rich in nutrition. It contains 15 ~ 20% protein, and its essential amino acid content and the ratio between them are very similar to that of human body and close to the ratio needed by children. The tissue structure of fish is particularly soft and easy to chew, digest and absorb; Fish is delicious and can stimulate appetite.
Most fish don't contain much fat. Fish fat contains more unsaturated fatty acids, which is easier to digest than livestock fat. Fish is rich in calcium, phosphorus and iron. Marine fish also contain iodine. Fish contains nicotinic acid, vitamins B 1, B2 and B 12, especially fish liver is rich in vitamins A and D. The brain in fish head contains more choline and lecithin. These things are all "panacea" to promote memory.
Why do some people say that people who watch Korean dramas will become stupid? Most Korean dramas are easy to understand and have no depth, so you don't need to use your brain to watch Korean dramas. If you don't use your brain often, you will become brainless. . .
Please accept it, thank you!
Can you bring money? Why do some people say that silver will turn black! The reason why wearing silver jewelry will turn black is a normal natural phenomenon. Because sulfur and oxides in natural media such as air have a certain corrosive effect on silver, after wearing for a period of time, some tiny spots (silver sulfide film) will appear, which will spread into pieces or even turn black for a long time. Everyone's endocrine structure is different. Some people have more acid in sweat, some people have less, and some people have high ammonia content, so wearing silver ornaments has different effects. Acid is easy to black, and acid is not easy to black. Even some people with exuberant oil secretion will bring their own silver ornaments to shine.
Methods of restoring the luster of silver ornaments
When wearing silver jewelry, don't wear other precious metal jewelry at the same time to avoid collision, deformation or wear.
Avoid silver ornaments touching water vapor and chemicals, and avoid swimming in them, especially when going into the sea.
After wearing silver jewelry every day, wipe it clean with cotton cloth and put it in a jewelry box or bag for sealed preservation.
Silver ornaments have been oxidized and blackened, which can be scrubbed with a soft brush dipped in toothpaste, or washed with soap or detergent by hand. If it is really impossible to clean, you can scrub it with silver washing water. After cleaning, the silver ornaments should be dried with cotton cloth.
Silver will turn black and be oxidized. Just put it in boiling water with aluminum and cook it for a while. Jewelry, etc. If I don't believe that anything will make my figure better, wearing such a small place can't have such a big impact on my whole body.