In general, a computer network is divided into five types, namely;
1. Local Area Network (LAN)
Local Area Network (LAN) is a privately owned network within a building or campus-sized to several kilometers. LANs are often used to connect personal computers and workstations in a corporate office or factories in order to use shared resources (eg printers) and exchange information.
2. Metropolitan Area Network (MAN)
Metropolitan Area Network (MAN) is basically a LAN version is larger and usually uses the same technology as the LAN. MAN can include corporate offices are adjacent or also a town and can be used for private purposes (private) or public. MAN capable of supporting both voice and data, can even be associated with cable television networks.
3. Wide Area Network (WAN)
Wide Area Network (WAN), the range covers a wide geographical area, often covering a country or even continent. WAN consists of a collection of machines that aim to run the programs (applications) user. Get more about this with COM Express™ basic
4. Internet
Actually there are many networks in this world; often using hardware and software are different. People who are connected to the network often expect to be able to communicate with others who are connected to other networks. Desires such as these require the relationship between networks that are often not compatible and different. Usually to do this required a machine called the gateway to engage and implement the necessary translation, both hardware and software. Collection of interconnected networks is called the Internet.
5. Wireless Networking
Wireless network is a solution to the communication can not be done with the wired network. For example, people who want to get information or communicate despite being on top of a car or airplane, it is absolutely necessary because the cable network without a wired connection may not be made in a car or plane. Currently the networks without wires has been rapidly adopted by making use of satellite services and are able to provide faster access speeds than a wired network.
Congratulations if your website is indexed in search engines and you might be succeed with PPC campaign management! Maybe you’ve done submit manually, or have made use of free services submitter. However, websites that have been indexed in search engines is not enough. You have to try harder to web pages indexed you can much as possible and each get a good position in search engine result pages. There is a good technique (and of course free) which you can use to optimize performance of your website. This technique is a technique popular search engines leads to your web pages. Yes, do not wait too long to make search engines kindly browse through the pages of your website. You can call Dallas SEO firm or, now it’s time you was the one who handed me a list of tasks to the search engines. As a bonus, this technique is also a powerful trick if your website is not indexed in Google, secured less than a week your website will be indexed!
- Types of File List URL
First, always know the types of files that you have handed to the search engines:
– sitemap.xml (and file compression sitemap.xml.gz): files list of URLs that you later handed to the search engine Google.
– urllist.txt (and file compression urllist.txt.gz): files list of URLs to lead the search engine Yahoo.
– ror.xml: files list of URLs to be exchanged via syndication / RSS feed.
sitemap.html: files list the URL for you to serve your guests and reserve for other search engines.
- Create List of URLs
Second, prepare a list of files throughout your web page URL. No need to panic if you do not know how to create an XML file, do not despair if you have hundreds of web pages that must be recorded. You can utilize the tool makers files mentioned above. You can try the service of making a list of URLs online files or install software for this purpose.
- Upload a list of URLs to Web Hosting
Third, after several file formats a list of URLs you’ve had, are now uploaded to the web hosting you all. Put those files into the main directory (the example in public_html). These files were later to be first referred to as search engine bots visit your website (in accordance with the format of the file).
- Thrusting the URL to the Search Engine List
The last stage, specifically on Google’s search engine, you can be more aggressive in offering a list of URLs (sitemap.xml). You do this by utilizing the Google Webmaster Tools service. Log in to the service using your Gmail account ID. Fill your website data, verify a website as exemplified in there, and then submit sitemap.xml file that you currently have. Do not forget; please check SEO company in Dallas and use the features of Webmaster Tools there to monitor the performance of your website
While we all might complain that government is too involved in our personal affairs there are certain areas where we welcome their assistance. One of these assists is the governing of or at least supervision of product and service review web sites on the Internet. Take for example the area of broadband comparison. There are dozens of these web sites proposing to help you compare broadband. But out of all of these only a few are Ofcom recognized and approved. Making a comparison of home and mobile broadband on one of the sites either by using built in comparison tools or studying broadband reviews will easily cut the work of this analysis in half. More importantly an Ofcom approved comparison website will offer only unbiased impartial information. Yes these web sites make a profit by their referrals, but they don’t necessarily steer you in one direction or another. If they do point you in a direction it is always in the direction of the best value for the services you are seeking. One of the ways an Ofcom approved broadband comparison website can help you is in finding out your MAC code. You will need this special number to switch broadband providers with minimum downtime. Another feature of these better sites is comparison of broad band from companies delivered via a phone line and those such as Virgin Media who offer broadband without phone line rental required.
In the United States, three large cellular-service providers offer mobile broadband services on their networks. Sprint and Verizon are both CDMA networks, so their services are based on EV-DO technology. AT&T, formerly Cingular, is a GSM network, so it’s offering an HSDPA mobile broadband service.
Mobile broadband services provide fast and easy ways to connect even from coffee shops.
All three of these companies have built nationwide cellular networks. But not every part of the network is created equal. If you’re in a major metropolitan area, then you’ll have the most data services available to you. But if you’re out in a rural area, you may be limited to simply making phone calls or browsing the Web at dial-up speeds.
For example, AT&T’s mobile broadband service is called BroadbandConnect. With BroadbandConnect, you can send e-mails, instant messages, browse the Web at speeds between 400 and 700Kbps, watch TV shows, and even record and share live video during a phone call.
But to access all of these BroadbandConnect services, you need to be within coverage range of AT&T’s 3G network. Right now, that’s confined to the nation’s largest cities. If you’re outside of that coverage area, you can still access some data services like e-mail, text messaging and Web browsing, but at speeds between 75 and 135Kbps.
Sprint and Verizon’s services are the same. With Sprint’s mobile broadband service, you can use your cell phone to send e-mails, listen to streaming radio stations, download songs and music videos, watch live TV, share photos, play games and browse the Web at speeds between 600Kbps and 1.4Mbps (megabytes per second).
But like AT&T, the most data services and the best connection speeds are only available in 3G coverage areas, which are usually found in the nation’s biggest cities. On the fringes of these coverage areas are mobile broadband roaming areas, which offer limited multimedia and data services. Even further outside major cities is the regular Sprint nationwide cellular network, with basic data services and connection speeds between 50 and 70Kbps, similar to dial-up.
What you pay to access these mobile broadband networks depends on what device you’re going to use. There are four basic options for connecting to a 3G network:
- 3G cell phone
- PDA/smartphone
- laptop computer with a PC card
- laptop computer using a cell phone as a modem
For each of these options, the cellular providers offer several different mobile broadband payment plans. There’s usually an option for unlimited monthly access, which is the most expensive plan. Another option is to pick a plan that allows for a maximum amount of data transfer a month. Sprint, for example, has an option for laptop users to pay $39.99 a month for 40MB (megtabytes) of data transfer over the network. Verizon has a 5GB (gigabyte) plan for $59.99 a month. To give you an idea of what that means, Verizon says you could send 1,747,627 e-mails a month before reaching 5GB, or look up nearly 35,000 Web pages
Cellular providers generally package their mobile broadband services for cell phone users. Sprint’s package is called Power Vision and AT&T’s is called MEdia Net. You pay extra for these packages on top of your regular calling plan. Or you can sign up for an all-inclusive plan that gives you a certain amount of anytime minutes per month, plus unlimited mobile broadband usage. With a PDA or smartphone, you can choose from unlimited or maximum data usage plus a voice-calling plan.
If you don’t want to sign up for a monthly plan, you can actually pay by the kilobyte of data transfer. Sprint, for example, charges three cents a kilobyte for mobile broadband access without a monthly plan.
Now let’s break down the terms and fees of a mobile broadband plan.
Terms and Fees of Mobile Broadband Services
Mobile broadband is a brand new technology, so expect to pay a premium to use it. Like all cellular services, mobile broadband requires a one- or two-year contract. If you cancel the contract early, the cellular provider can charge an early termination fee up to $200.
If you’re going to use a cell phone for mobile broadband access, you might also need to buy a new phone. Cellular providers require that you use certain phones to access certain services. If you want to sign up for AT&T’s BroadbandConnect service, for example, you’ll choose from a dozen or so phones that have the right hardware and software to handle Web browsing and multimedia playback. And if you don’t sign up for an all-inclusive voice and data plan, then you’ll have to sign up for some kind of voice plan in addition to the mobile broadband contract.
The nice part is that the cellular providers often offer steep rebates and discounts when you buy a phone with a voice or data plan. Some phones and PC cards are even free after all of the instant discounts, online savings and mail-in rebates.
Make sure you read your mobile broadband contract closely and pay attention to all of the surcharges and taxes that apply. When you’re quoted a monthly charge of $39.99 a month, that doesn’t include any of the extra fees that will show up on your monthly bill. Let’s talk about a few of them:
- Most cellular service contracts come with a one-time activation fee of around $35.
- Some contracts require a deposit. Depending on your credit history, that deposit could be as low as $50 or as high as $1,000.
- Cellular services are subject to state and local taxes. Depending on where you live, those could add between 4 and 35 percent to your monthly bill.
- Phone companies are required to contribute to a federal fund for providing phone access to low-income individuals and families. This is called the Universal Service Fund (USF). As of April 1, 2008, the FCC is charging 11.3 percent per telephone line, also known as the Federal Universal Service Charge.
- There are also various regulatory and administrative charges that add up to around one dollar a month.
Some mobile broadband services have roaming areas that extend into parts of Mexico and Canada. Generally, if you use data or mobile broadband services within one of these extended roaming areas, you’ll be charged an extra fee based on a set price per kilobyte or megabyte of data transfer.
We hope this has been a helpful introduction to the exciting possibilities of mobile broadband. For more information about mobile broadband services, wireless technology and related topics, check out the links on the next page.