PageRank (PR) is the way in which Google tries to show the importance of a site or page, is for it (Google) before the Internet. It was developed in 1995 at Stanford University by Larry Page, hence the name “Page” Rank.
PageRankBasicamente PageRank is an assessment of the relevance of the page. That relevance is distributed [...]

SEM, or Search Engine Marketing, is a set of techniques for internet marketing that aims to promote a website results pages (SERPs) for a search engine (eg Google, Yahoo, MSN, etc …).
Basically, the SEM is divided into two categories:
* SEO or search engine optimization, which aims to optimize keywords, content, links, factors on and off [...]

SEO is an acronym for Search Engine Optimization, which means optimizing sites for search engines.
The term Search Engine Optimization was first used by the Multimedia Marketing Group (MMG), John Audette, where the goal was to implement methods that caused a website could get a placement in search results better than the competitors.
So let’s split:
What is [...]

In osi layer data link layer is most important layer.it takes the physical link reliable by providing means by activate,maintain,deactivate link between any two successive nodes.it also handles duplicate frame transmission case.this layer is also responsible for creating& recognizing frame boundries by attaching special bit patterns of beginning & end of data.the special bit [...]

Transport layer lies above network layer which is in osi layer.where as data link layer maintains the link between two successive nodes.this layer is responsible for handelling data between the end systems.loss control,duplicity control& sequence control are the major function of this layer which is below:
.end-to-end delivery
.addressing
.reliable delivery
.flow control
.multiplexing

Any system must assure privacy throughout network or network sharing.ther should not be any unauthrousied access.thus security is needed which is implemented below.actually this is based on data transfer:
Encryption: it is the process through which sender transforms the original data into a form which is not understandable in plain format.it then sends it out over [...]

In bus topology,a link cable is used from one place to another nodes are connected to drop lines and taps.drop lines are cable running between device.taps are generally splices or punctured connectors.it use point to point communication.
Advantages :
-easy to install
-it is easy to lay down in suitable path.
-no routing control is required.
Disadvantages:
-recognition is [...]

In ring topology,each device has dedicated point to point link only with the next device.all devices from a closed loop and signals travels in one direction through the ring until it reaches destination.each devices receives the message and pass to next device.
Advantages:
-easy to install.
-adding of extra node means introduction of new connection
Disadvantages :
-maxium number of [...]

From a marketing standpoint, creating a Facebook Page for a business or
public figure can really generate ongoing buzz about a product or promotion. One of the unique things about Pages is that you, as the administrator, can determine what tab on the Page users land on when they display your Page. You can use this strategy to direct [...]

Training sessions on SEM and SEO, I have given here lately in the company and seminars and lectures that I attended, I found that even today there is confusion between what is SEM, SEO and PPC. Some people refer to mean SEM PPC SEO and others use thinking is SEM.
I have seen and heard everything. [...]

The questions I have received lately, one that is repeated is:
“How do I remove my site from Google that no longer appears in the results?”.
Coincidence or not the process has become much less complicated a few months ago thanks to the addition of a new service on the webmaster tool that Google offers – Google [...]

FACT: One of the most important factors for the placement of your pages in search engines are the format, structure and content of your URLs
Here I present to you 5 guidelines on how to build URLs that are not only friendly and relevant to search engines but also clear and straightforward for users of your [...]

10 hacking techniques and situations beneficial to the hacker are following:
a) Stolen access:
Involves the use of another user’s ID or password without permission to gain access to the internet.
b) Stolen resources:
Search for processors to store stolen software and data bases
c) Internet virus (aka worm):
Virus designed to traverse through the network, passing through multiple [...]

To view videos posted by others, you can click the Video link on theHome page to filter the news feed to show all the video clips your friendshave posted. You can also play a video clip directly in the news feed byclicking its Play button, as shown in Figure . This enables you to viewthe [...]

When starting on online business, it is essential for you to know about the pitfalls of making cash online. Knowing the dangers will allow you to proposition for your touchdown and avoid the most common problems that others have faced. Your notion may sound Herculean but when it comes down to putting it into practice, [...]