Tag: internet

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The Last

The layer 3, defines a network as a group of hosts with patterns of identical bits in the network address of your addresses portion.While the 32 bits define the host IPv4 address, there is a variable number of bits that make up the host address portion. The number of bits used in this portion of host determines the amount of host that we have within the network.Note that devices use the binary logic. Dotted decimal format is used to make people easier to use and remember directions.Lots of network and hostEn each IPv4 address, any portion of the higher order bits represent the network address. The layer 3, defines a network as a group of hosts with patterns of identical bits in the network address of your addresses portion.While the 32 bits define the host IPv4 address, there is a variable number of bits that make up the host address portion. The number of bits used in this portion of host determines the amount of host that we have within the network. For example, if need at least 200 hosts on a particular network, would need to use enough bits in the host portion to be able to represent at least 200 different bit patterns.For example, if we need to have at least 200 hosts on a particular network, you would need to use enough bits in the host portion to be able to represent at least 200 different bit patterns. To assign a unique address to 200 hosts, use the last octet integer.

A total of 256 different bit patterns can be achieved with 8 bits. This means that the bits for the three upper octets represent the portion of network. To understand the functioning of a device in a network, it is necessary to consider the addresses and other data from the way in which a device does: in binary notation. This means that it is necessary to be skilled in binary to decimal conversion.The data represented in the binary system can represent many different forms of data in the human network. This topic refers to binary because they are related to the IPv4 addressing system. This means that we see each byte (octet) as a decimal number in the range 0 to 255.To understand the functioning of a device in a network, it is necessary to consider the addresses and other data from the way in which a device does: in binary notation.

This means that it is necessary to be skilled in binary to decimal conversion.The data represented in the binary system can represent many different forms of data in the human network. This topic refers to binary because they are related to the IPv4 addressing system. This means that we see each byte (octet) as a decimal number in the range 0 to 255.

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RQ Search

The main purpose of the program RQ Search and Replace – mass search and replace text (blocks, strings, whole words) in text files and documents MSWord. One of its features, useful for zazrabotchikom WEB pages, is the presence of special functions for editing HTML files. With this program you can find and edit the tags or specific attributes of the tags found in the given conditions. For example you can find and remove the tags span lang = 'rus'>, which contain a lang attribute with the value rus, at the same time span tags with a different set of attributes will not be affected. You can edit and delete tags and attributes, change the value of individual attributes.

In this case the order of the attributes in the tag register, and other differences do not affect the HTML code is parsed result, it is allocated with the given name tags, this tag is distinguished attributes and their values and compared with predetermined. Tags with the specified attributes will be processed if they meet the selection criteria. This kind of operation can be implemented using regular expressions, and even then, maybe not all. In addition, when using RQ Search and Replace user does not need to know the rules of formation of regexps and construct the required formula. In the cell search and replace tags are entered in the usual form, and possibly some additional keys. In processing the HTML file, the following steps: Remove the tag – the tag is removed and the corresponding closing tag.

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Web Directory

Directory of sites (web directory), it is the same – directory of Internet articles or online resources – a structured set of links to sites with short descriptions. Themselves online resources within the directory are divided thematically. Thematic breakdown, undoubtedly have a positive effect on search engine optimization. Also check the catalogs increases the number of inbound links to your site. All catalogs are divided into four groups: private directories – adding sites in a catalog by only one person responsible for it. The remaining three types of catalogs are black, gray and white. White article directories and websites follow certain rules which are consistent with objectives set before the search engines, and do not use illegal methods. Following a link to a directory on another resource page, the page description of the site in white catalog of articles placed higher in comparison with standard references.

In addition, the correct (direct) links from directories will promote white site-specific search queries. Sometimes just the correct registration in catalogs is enough to website hit the top ten in search engines. Black and gray article directories and websites are prohibited methods: the presence on the site entrance pages – doorways and fraud in requests. It often happens that such a directory puts a link Site Web master via a redirect. Benefits of such a link is almost none. As it is not passed no PageRank, no Witz, or weight keywords in exile. The only benefit from these catalogs – an additional influx of visitors.

But usually, it's too small. During the registration site in this directory, the web master must place a link back to your site. If the directory – open (white), it puts a direct link to the site, and does not require the placement of 'inverse links' on your resources. Catalogs are moderated and unmoderated. It is not difficult to guess that the unmoderated directories accept all sites in a row. Imagine an environment in which it may be your site. In addition, search engines link to unmoderated directories do not accept. In the HELP Yandex directly referred to. Moderated directories, usually to the following conditions: – place direct links – no need to reverse links, or its location is not necessarily – you send a notice of acceptance or rejection of adding your site to the directory. To help the webmaster, there are many programs for semi-automatic and automatic registration different search and navigation systems online. With these programs can be qualitatively and quickly add the site to search engines, directories, ratings, message boards, sites, link exchange, etc. Registration site to directories – this is the first and very important stage promotion. Placement of articles and sites in the directories will be of great benefit in promoting a search engine optimization of your website.

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Optimization

However, optimization is much benefit in the cost / result / effect duration. When people need information, the better assistant than search string not found him. The user enters the words and phrases that reflect the essence of the issue, and in return receives a huge number of links to interesting subject. For example, if the user is asked in the search request Search for sellers of a product and got a list of 2000 links, in which the address of your resource is located somewhere in the thousandth position, the transition probability is very low on it. Most users do not go further second or third page of results, so the placement site in the top positions or in the top ten on the key demands – a mandatory condition for the success of the resource. TS The most effective and least wasteful way to online promotion of your site is through the major search engines. To conduct qualitative optimization is necessary to understand the principles of search engines and directories that will work out a strategy of optimal the use of their opportunities.

The main difference between a search engine of the directory is that when they use the pages on spiders. Spiders (from the English. The words 'spider' – a spider) – a multi-functional program who periodically make 'attacks' on the Web. They find new or changed pages and index them, ie, Contribute to the database, which is then used to generate the search results to a user request.