A: A Web server is a computer used to store WWW files and respond to customer requests. The role of the browser is to interpret and display hypertext documents, including references (or pointers) to other documents, which is very similar to documents on other HTTP servers. These pointers are also called links. When a link is selected from a hypertext page, the browser sends the request back to the new server, and then displays another page full of links on the client.
The basic steps to open a Web file are as follows:
Specifies the URL of the Web file to be accessed in the browser.
The browser sends a request to the server.
The c server forwards the request to the server at the specified URL.
The server sends the file back to the server.
The server sends the file back to the client browser.
Browse to display files on the computer screen. 2. Is there a correspondence between 2.IP address and domain name? If so, how do they correspond? If not, tell me how to uniquely identify the location of a resource on the Internet.
A: There is a correspondence between ip addresses and domain names. The IP address is a global address. In the protocol software, IP addresses are represented by binary saturation of two bits in the table and inside, and every eight bits are grouped and separated by dots. In user-oriented documents, IP addresses are visually represented as four decimal numbers separated by dots, where each decimal saturated pair is an eight-bit binary array (that is, a byte), and each decimal number can take a value of 0 ~ 255. In order to solve this problem and facilitate the hierarchical management and distribution of network addresses, a character-based address identification, namely domain name, has been adopted on the Internet since 1984.
Domain name system, domain name identifies the organization to which a household belongs and the host or node computer used. The naming method of domain names is naturally called domain name system, and domain names must be carried out in accordance with relevant ISO standards.
Similar to IP address, domain name adopts hierarchical naming mechanism, and domain name consists of n levels, separated by dots.
Domain name is the main content name of the character model that people can easily remember, and IP address is the numerical host name that computers can easily handle. Both of them describe the address of the host in the internet, and they correspond to each other one by one. Domain name system realizes the mapping from domain name to IP address.
The essence of the domain name system is an open database, including the standard format of unfinished data, the database query method and the standard method of updating data locally.
Domain Name System (DNS) announces the information management of hosts to many countries, regions and organizations. Users update the information of their domain on their own domain name, and the domain name server transmits the information to other domain name servers. In addition, the domain name server can be owned by almost all computer software, including e-mail, remote terminals and file transfer programs. 3. What are the main applications of image processing tools?
A: Image processing tools can edit, modify, optimize and format convert graphic files.
Graphic editing includes making fonts, making 3D effects, creating transparent GIF files, inserting backgrounds and shadows, handling fonts, arrows, logos and other graphic elements, and editing, moving and rotating graphics.
B Image modification refers to understanding and other modifications of the existing images in the network industry, including adjusting the brightness and contrast of the images, and coloring the black-and-white images with variants to improve the quality of the images in the web pages.
C image optimization refers to the optimization of color correction of established images by using various filters.
Generally speaking, image processing tools include public image processing tools, special image processing tools, and image processing tools that come with web page making software. 4. What problems should we pay attention to in order to achieve the goal of web page making?
Answer: Pay attention to the following questions.
A web page structure The web page structure should be clear and easy to browse, and the ideas and context should conform to the visitors' ideas. The measures that can be taken are: adopting frame structure to express theme, shadow and text; Web page size is generally controlled within 50KB; Put the contact information at the end of the page, such as email, so that visitors can establish contact and feedback the necessary information. Generally speaking, all web pages should be content-oriented, and there is no need to pursue complicated forms of expression excessively, but you must write a brief introduction, be distinctive and avoid space. The page itself should be simple. Web pages with complex structures not only consume a lot of energy, but also make it difficult for visitors to read because of complex hyperlinks.
On the premise of content-oriented, C word should combine form and content as much as possible. Don't make the page fancy, and don't just talk about the content without paying attention to the arrangement of words and pictures. It should be easy to read. Note: the title of the web page should be concise and clear, which can reflect the content of the whole document; Divide different parts with horizontal lines in the narrative part of the text; Emphasize that fonts should be used to express key articles and paragraphs.
D graphic design Reasonable use of graphics can add color to the web page. The graphics inserted in the web page should be as small as possible, and the graphics in the web page should be accompanied by text descriptions, so that people can understand the relevant content before the graphics come out; Don't add too long interactive text on the diagram, and don't put all hyperlinks on the diagram; Control the number of pictures in the page, and don't abuse the picture GIF5. What is what you see is what you get? What is a tool to mark the web industry? What are their advantages and disadvantages?
A: The marked network manufacturing tool does not just write the original code directly. Its advantage is that users can easily control the code. Because they are all written by themselves, there is no extra part, so we can grasp the performance of the whole HTML file in the browser. The biggest disadvantage is that users must be very familiar with the HTML language.
Visual web page making tools can not only make web pages by what you see is what you get, but also layout web pages very intuitively, which often makes the design work twice the result with half the effort. It does not require users to be familiar with HTML tags. As long as users have good ideas, they can make web pages that meet users' needs. However, it has a fatal disadvantage: it is difficult to achieve the same display effect as the browser accurately, and the generated code can not fully adapt to various situations, and it is often highly redundant, so it is not as simple as manual writing. 6. What can I do to enhance the learning effect when learning how to make web pages?
A: Let's start by understanding the basic tags of HTML.
B Choose the tool you think is convenient, starting from the first page.
Visit other people's web pages more and get inspiration from them.
D. in-depth analysis of successful websites and web pages. 1. What are the most important principles in website design? Why?
A: The most important principle of a website is creativity. Although the main purpose of a website is to convey its information to people, it also conveys its culture to those who get information. Mastery of software can be accelerated in a short time, and new software is inexhaustible and more powerful. However, the use of these softwares requires a good website design concept to create an excellent website, which is the core of website production. The website is made according to certain steps. Different website designers have different opinions and views on websites, but they have a common view: only inputting text, making hyperlinks and arranging pictures are not real web page making, because the most important principle of web page making is creativity. 2. What is an information board? What's the role?
A: The information board is a collection of all kinds of latest information provided for visitors in a website. It is usually located on the home page, or at the same time when the home page is opened, the opening information is controlled by the script. 3. Briefly describe the design process of the website and describe in detail the work that should be done in each step of the process.
A: The design process includes eight parts: preliminary discussion. Collect relevant information, determine the target users of the website, the content to be published and develop the network server platform. B conception. Based on the collected information, the designer began to conceive the content organization, column setting and basic structure of the page. C comprehensive content discussion. The designer first makes some initial pages, prints out drawings with articles, and discusses and studies with customers. Page layout and navigation. Once the customer agrees with these contents, the designer starts to compile the webpage, and the site is also compiled into the page, so that the customer can see the life effect of the page. E graphic production. When customers agree with the appearance design of the website, designers will make graphics and optimize them. F content stream. Use various network technologies to combine and modify customers' written materials. G test. Before the website is submitted to supporters, developers should thoroughly test every page and link and fix it. H acceptance and delivery. Once the acceptance work begins, the customer will conduct a lot of tests on the website to find out the printing errors and make corrections. After completing the necessary work, the website can be publicized and opened to the outside world. 4. What is the style of the website? What are the styles of typical commercial websites?
A: Website style refers to the impression that the structure, tone, words, signs, patterns and other elements adopted by the whole website give visitors about the website. The style of commercial companies is mainly manifested in the following aspects:
A company's logo or trademark should appear at the top of the page, the color should be as eye-catching as possible and the standing area should be small. B theme graphic product advertisements can be used to highlight the company's image and style. C the main column is generally explained by hyperlinks, and the pictures and words of the main column should be considered, and the theme graphics should support each other. Don't display the primary and secondary columns on the same page. E commercial websites generally have fixed columns and pages. F. Establish a search engine in the site to facilitate visitors to find the required information in the site. 5. What principles should the directory structure of an organization's website follow?
Don't put all the files in the root directory. B. establish a subdirectory according to the content of the column. Establish an independent picture catalogue under each column. The level of the directory should not be too deep. Avoid using Chinese catalogs. Don't use too long a directory. Try to use meaningful directories. 6. What is the significance of studying the connection structure of websites? What are the main website structures?
A: The connection structure of a website refers to the topological structure in which pages are connected with each other. It is built on the basis of wooden structure, but it can cross directories. Figuratively speaking, each page is a fixed point, and the connection is the connection between every two fixed points. A point can be connected with one point or with multiple points. More importantly, these points are not distributed on a plane, but exist in a three-dimensional space. The fundamental purpose of studying the connection structure of websites is to achieve the most efficient browsing with the least number of connections. Generally speaking, there are two connection structures for building websites: tree structure and star structure. In fact, these two structures are always mixed with each other. We hope that visitors can reach the page they need conveniently and quickly and know their position clearly. So the best way is to use a star connection between the home page and the secondary page, and a tree connection structure between the secondary and tertiary pages. What is the center of gravity of the 1. page? Why balance the center of gravity of the page? What methods are commonly used to balance the center of gravity?
A: Balance of gravity means that the center of gravity of the page reflects the coordination of the distribution of various elements on the page. Any picture or text occupies a certain space on the web page. As a module, it has its own center of gravity. When it is inserted into a blank web page, it will obviously change the center of gravity of the whole web page. The balance of the center of gravity means that the web page must be symmetrically laid out. Although symmetrical layout is easier to get the balance of the center of gravity, it often makes the page lose its vitality, so asymmetrical layout is the first choice for more web pages. Generally speaking, the balance of center of gravity refers to the balance of left and right centers of gravity. Paying more attention to the lower level is also a common method of web page composition. The balance of the center of gravity on the page is not strict. This is because the whole page is displayed when the browser scrolls, and visitors generally don't pay attention.
2. What is the color of 2.WEB security? What is jitter? Is there a connection between the two?
A: Web pages are safe because browsers are selective when displaying various colors. It can only be displayed in 2 16 colors. No matter the color channels of blue, red and green, he always uses the method of skipping display to encode the colors, that is, he can only take values between 00 and FF. These jump colors are called web safe colors, which means that they can be displayed in any browser. Jitter is because the browser can't display all the colors, so it forges the colors that can't be displayed in the palette, and produces the colors that don't actually exist in the image through the mixing of adjacent pixels, thus achieving the purpose of compensation. The dithered image has many grains and the image is rough. Jitter is caused by the restriction of web page safety color, and the color range used in jitter is within the web page safety color. ...resources/Liujing 2008 666/blog/item/ 1 FB BAC 33 cef 1 1 cfe 1 B4 cfffc . html。