After a computer network is established, how to evaluate the quality of the network?

Ways to test your network:

1. Ping the target network to see the latency and packet loss rate.

2. tracert uses this command to test the target network, detect the route from the source address to the destination address, and the less it passes, the higher the quality.

3. Test from the target network, write some scripts and combine the above two commands to find some network nodes to test across the country.

4. The following webkaka and webmaster station have tools such as network speed test and traceroute, which can also be used as a reference.

1.The page should open quickly, and it can be lazy to load, but it must be able to display the content in the visual range in a timely manner.

2.After the page is opened, the first feeling must be good, do not messy color transitions, the first impression affects whether the user will continue to look down.

3.The page has content, and the so-called content is not simply gorgeous and full, but your ** can solve the problems that customers are concerned about, such as the industry of building a website, you can't simply put cases, and you also need to put some reasons for customers to choose you and your advantages in this industry.

4.The interactivity should be good, the so-called interaction has multiple aspects, and the most straightforward feeling is that after opening it, you will obviously feel that this ** is not ordinary from others**.

Whether the function and interface design are in line with the characteristics of the enterprise positioning, product or service. The purpose of building a website is to a large extent to promote their own brands and products, if you want to judge the effect of the first construction, it must see whether it plays a preset role, that is, whether the function and interface design are in line with the positioning or characteristics of the enterprise. Relatively speaking, large enterprises should highlight their brands more, while small enterprises should highlight the features and services of their products more.

2. The security and stability performance of the program is also very important for the construction of the server, and the security and stability of the program mainly depend on the security and stability of the server.

3. Function, maintenance and update difficulty. The function of the enterprise is not the more powerful the better, but should be self-sufficient in the current situation of the enterprise, the basic functions should include: columns can be added or decreased at will, all content can be added and deleted in the background, **main** or flash can be modified through the background, etc.

1) Access speed.

Not only do customers dislike it, but search engines don't like sites that open very slowly; Therefore, speed is very important, how to test the speed, the trial space provided by the same service provider is unreliable (personal opinion) They will provide the best server or space for customers to try, so the best way is to observe other sites under the server, that is, users who have purchased their server or **space, if you know them? This should be known to many people.,Through some webmaster tool queries,My ** has these tools, you can observe for a few days if there is no problem before buying,So that you won't be deceived by the server (the current server has a bad reputation.,Have to visit)。

2) Stability.

As with the method above, after a few days of testing and observation, you can choose multiple service providers to test at once, preferably no more than 3, so that you can analyze with the best effort.

How to know whether a server or ** space has been punished, it is also very simple, query the site inclusion under this server, if it is not included, then the server must have been punished. It is not advisable to choose.

4) What sites are there under that server.

Check what sites are there under this server, what kind of **, whether there is a bad site, if there is such a **, it is recommended that you do not choose such a service provider, if he is too evil, the search engine is likely to punish the server, then you will also be punished, so do not choose such a site, or let the service provider notify them to modify.

The employment prospects for computer science majors are good.

With the development of modern economy and technology, China's IT industry has entered an era of rapid development. The rapid development of IT is obvious to all, and the number of IT talent shortages is as high as more than one million every year.

Internet information technology does not exist and is used in our work, study and life. Facts show that the Internet has become more and more extensive into all aspects of people's lives, and the gap in the market demand for IT technology services will become bigger and bigger. Being proficient in a programming language and mastering an IT technology will have more employment options.

With the rapid development of the information industry, the demand for talents in the industry is also expanding year by year. According to domestic authoritative statistics, in the next five years, the total demand for informatization talents in China will be as high as 15 million to 20 million.

Among them, the shortage of talents such as "software development", "network engineering" and "computer art" is the most prominent. Taking software development as an example, the demand for software talents in China is growing at a rate of 20% per year, with an annual increase of nearly one million.

Today, with the rapid development of the market economy, the IT industry has become one of the most promising high-paying industries with its super development momentum, such as software engineers, network engineers, film and television animation designers and other IT talents will become the shortage of talents in the workplace, with good development prospects and rising salaries.

According to relevant data, the IT industry is currently the industry with the highest average income, and the average annual salary of its employees has exceeded 100,000 yuan, and the average annual salary of experienced IT engineers is generally more than 120,000 yuan.

Extended information: The characteristics of computers are mainly reflected in the following aspects: fast computing speed.

The internal operations of a computer are composed of digital logic circuits, which can complete various arithmetic operations at high speed and accurately. Today's computer systems have a computing speed of trillions per second, and microcomputers can reach more than 100 million times per second, enabling a large number of complex scientific computing problems to be solved.

For example, the calculation of satellite orbits, the calculation of large dams, the calculation of 2 4-hour weather forecasts, etc., which used to take years or decades to calculate manually, can now be completed in a few days or even minutes with a computer.

The calculation accuracy is high. The development of science and technology, especially cutting-edge science and technology, requires highly accurate calculations. The accuracy of a computer-controlled missile against a predetermined target is inseparable from the computer's precise calculations.

Generally, computers can have more than a dozen or even dozens of significant digits (binary), and the calculation accuracy can range from a few thousandths to a few millionths, which is beyond the reach of any computing tool.

Strong logical computing ability. Computers can not only perform calculations, but also have the function of logical operations, which can compare and judge information. The computer can save the data, programs, intermediate and final results of the calculations, and can automatically execute the next instruction according to the judgment results for the user to call at any time.

Users can design the operation steps and programs in advance according to their needs, and the computer operates very strictly according to the steps specified in the program, and the whole process does not require manual intervention.

1. Look at the number of CPU cores: At present, the mainstream is dual-core, single-core (such as Pentium 4) has long been discontinued, and the high-end has quad-core.

2. Look at the production process: At present, 45nm CPUs have been popularized, the previous generation was 65nm, and there are older 90nm (rare). The manufacturing process of 45 nanometers refers to the width of the wire connection between the transistor and the transistor (referred to as the line width), which simply means that it can be on the chip in the same area"Squeeze"More transistors, more transistors leads to higher performance.

Even if the number of transistors does not increase, the area of the chip can be reduced accordingly, so that the power consumption and temperature can be reduced by a lot.

3. Look at the size of the L2 cache: the CPU is in the computer"Run"Sometimes, because it runs too fast, other hardware such as memory can't keep up with it, so CPU manufacturers have introduced caches. Judging the quality of the CPU by looking at the size of the second-level cache is mainly for Intel's CPU, because Intel's CPU relies heavily on the second-level cache, Intel's CPU second-level cache is mainly used to store data, and the first-level cache stores the address of the second-level cache, and these data are numbered such as a-z in the first-level cache, and the CPU needs to retrieve the data directly from the first-level cache when the number of the data is retrieved, for example, For example, the L2 cache is the content of a book, and the L1 cache is the directory of the book, which is why Intel's CPU L2 cache is particularly large, while the L1 cache is particularly small.

AMD's CPU design is different from Intel's, AMD's CPU Level 1 cache is used to store the most commonly used data, and the Level 2 cache is used to store more commonly used data, so AMD's CPU Level 1 cache and Level 2 cache are about the same size. Theoretically, Intel's CPU is more efficient, and the CPU can directly retrieve the number when it needs to retrieve some data.

4. Main frequency: In the case that the first three are the same, the quality of the CPU can be judged by the level of the main frequency, most of the CPU main frequency is around the to, and the highest is not exceeded, because the higher the main frequency, the greater the heat and power consumption, and the main frequency is too high, there will be more drawbacks, so so there is no CPU main frequency exceeded.

The computer is composed of a chassis and a display, and simply put, the main part is that the hardware of the chassis determines whether the operating efficiency of the computer is objective; Abbreviated as what you call good or bad;

The good meaning is that the total frequency of each hardware in the chassis is completely equal to the total frequency of the CPU (** processor), neither greater nor less than, so that the data processing effect can be fully exerted;

Bad means that the total frequency of each hardware is either greater than the CPU total frequency, or less than the CPU total frequency, either it increases the workload of the processor, or it cannot play the role of the processor at all;