Domain Hosting News and Questions

youssef edward asked:




When building a network, some considerations must be taken from the point of view of availability. In the context of networks, availability means that the network must be operable during the whole day regardless of failures. Thus, some techniques must be taken to make the network available all the time.

In order to develop redundant network one must consider the possible failures that must occur during the network operation. These failures are categorized into two types: link failure and network device failures. In link failures, one cable connecting two computers or two any two devices such as routers or switches can be disconnected and make some of the network or all of it to be down. On the other end, device failure means that the network device itself is down which could be router, switch, or a hub.

First let us find how to overcome link failures. The solution in link failures is simpler than device failure because all we need to do is to provide multiple links between devices such that when a link is down, other link takes its role. This is simple of course but can lead to problems. This is because when there are more one link connecting the devices the data will find multiple links and the switch will forward the data to multiple links and the receiving end will receive the data more than one time. In addition, looping can occur because the data will be forwarded across the links forever. This will occur because there is more than one path to the destination and because the switch or the hub forwards the data to all ports.

The solution to looping is to use some protocols that block some ports on the switch and open others so that only one path is existed to the destination. This is achieved by what is called spanning tee protocol, which is available on Cisco switches. Notice that the concept of looping and STP are applied only to devices connected through a LAN and not to routers.

Second let us see the other type of failure which is device failure. This type occurs when a network device fails and thus is unable to forward the packets. The failure here can have a big impact on the network if it occurs in the core layer of the network which connects the whole network together. Therefore the solution is suggested to be applied at the core layer where two network devices are connected to the network to forward the data, one is the primary and the other is the secondary If one device fails, the secondary becomes available.

The above technique is configured on the router or the switch depending on what is used. Some protocols are developed to accomplish this function and are available on Cisco devices. When implementing it, one must connect the device at the core which must be redundant to the proper ports of other devices and connect similar device to the rest of the network in the same manner the primary device is connected. If the primary fails, this secondary takes it role



3D Hosting Web

Web Host asked:




Before coming directly to characteristics of good and cheap web host first it’s better to have review of the fundamentals.

Defining Web Host.

A web host is a service provider that places websites of its customers on a server, which is connected to Internet.

For proving this facility a web hosting provider is generally having high-speed Internet connection as they have to host thousand of web sites on many servers depending upon requirement. Essentially the host providers rent out space where a user can get his website made available to whole world through www i.e. World Wide Web.

The best part of web hosting facility is that now its easy to manage the website even for a layman as all the technical aspects like maintenance of complicated server technology, technical maintenance etc us now the work of these providers. Now one can easily focus on his own Internet business for rest there is host provider.

Now coming to the point following are the features offered.

Features

The followings are the features available in most web hosting plans:

? Control Panel

A control panel is an interface by which access of website on web server is made possible, it helps in setting up and constantly updating as well as customizing the website. Some host providers customize their own control panel so as to enable them to upgrade and expand it when and where required.

? Disk space

Most of the sites that have less data or graphics or video clips or big downloadable files can use 50MB of disk space easily. This helps in further growth for reseller as he can use that space of host providers for other purpose.

? Bandwidth

It is the amount of data sends or received through a unit of time. When a visitor downloads files from website on his own computer then that time it is the bandwidth which is making that possible.

? Email Account

With the use of POP3 email accounts one can check email from Outlook, Netscape Mail, Eudora or any other Email software.

? Scripting language

As now the latest technology is based on Unix and Linux platform only host that support latest versions languages like php, perl and CGI must be selected as that can only provide the optimum utilization of money one is paying.

? Database

For displaying big amount of data like user accounts, stock prices, maps, Interactive news, message boards and forum etc that should be accessible also there is a need for an account that offers a database. For this MySQL, most popular and powerful built on Linux operating system is used. Besides language, many other features are also there like ability to handle millions of entries all at once, flexibility and speed allowing storage of logs and big pictures, ability to scale well under heavy traffic conditions that all together makes MySQL ideal for database-intensive or e-commerce-enabled Web sites.

Customer Support

Customer support is also an important criterion while selecting a good web host service and it is equally important both for an expert as well as a layman.

Following are the essentials for a good support system:

? size of the database.

Size of the database is an important feature as it helps in providing quick search for any answer and thus helps in getting solution of any problem without even bothering customer support staff. If the database is large its easy to search for information from it. Some web host providers even provide video tutorial guide, which helps in step-by-step setting up of account even for a layman.

? efficient customer staff

In order to get fast and good response quick customer support is a must. The following are few forms of customer support:

a. Email support

b. Phone support: Generally for sales and technique aspect it is used. A well-equipped and knowledgeable staff knows and problems and provide with immediate and relevant remedy without wastage of time.

Clove Chat support: Some web host companies like Lunar pages and Globat even have live chat support for their customers, but irrespective of how many support channels a company is offering its more important that the available staff is responsive to the need.

Price calculation on basis of ratio of Disk space to Bandwidth ratio What is the amount that one must pay depends upon the disk space and bandwidth that is available with the host plan. Thus price must be ascertained keeping in mind the above two factors.

Popularity

Besides all of the above features it’s all in vain if web host is not offering an effective marketing plan. It is so because if a web host provider is not having good customers or members as well as steady growth of them, then it’s not possible for them to survive in this competitive world.

The popularity of a particular web-hosting provider can be judged by the number of awards won as well as the reviews of other websites and also from the ranking in Alexa traffic.

All the hosting providers listed on our Top 10 Cheap Web Hosting Directory are among the top 40,000 most visited websites in the world.

Trustworthiness, Speed and Uptime Guarantee

For any company if its website is not available or accessible, then it tends to not only loosing of customer but also it hampers credibility therefore its important to check if web host provider is guaranteeing at least 99% uptime. However to ensure maximum uptime, installation of redundant back-up systems is quite important “Redundant means having an alternative Internet connection on the verge of interruption of main Internet connection. It tends to minimize downtime and is a part of host provider’s management system For a matter of speed, how fast a site is depends upon the types of network connections. Other matters like routing, web server set up and local area networks also play an important part but still they are after the factor of Internet connection.

Many hosting providers still connect to the Internet through T1, or T3 connections. However the best one would be one using OC (Optical Carrier) lines.

A T1 line offers data transfer rate of 1.5 Mbps (megabits per second), while a T3 line supplies data transfer rates of 43Mbps. OC-1 refers to a circuit that transmits 51.85Mbps. Higher levels are multiples of that speed. Ultra-High Speed OC3 and OC12 lines offer 155Mbps and 622Mbps respectively. Some hosting providers have connections to major Internet backbones at the speed of OC48 (2488Mbps) and OC96 (4976Mbps).



web hosting directory

swapnil asked:




The Ultra No-weight luggage by Skyway is the lightest weight luggage of all of the “light weights” on the market. It has an ultra cloudlike construction that provides uncompromised strength that is up to 60% lighter than conventional case construction. Skyway has brought innovation to the luggage industry for over 90 years, and this superior luggage design has been very well received by the weight conscientious consumer of today. Many of the airlines now charge for baggage that is over 50lbs. and the charges can run quite high. Using luggage that is lightweight to begin with allows you to bring more of the essentials that are important to the comfort and success of your trip.

These lightweight cases feature all the amenities of the heavier luggage on the market. Each vertical case comes complete with locking up and down upright handles. The handle is accessed by a push button mechanism that makes the case easy to push when necessary, as well as to pull. It also locks in the down position, and once depressed, the handle stores in low profile mode to insure no damage from handling. Cases also feature a cup handle located at the bottom of the case between the wheels. This handle makes it easy to grasp the case at the top and bottom. Additionally, all of the rolling pieces are equipped with a durable polyurethane in-line skate wheels. The high impact wheel housings are mounted at the outside corners of the cases to ensure superior stability and smooth operation over the many different surfaces you may encounter. It will wheel over cobblestones and carpets, as well as smooth tile.

All of the ultra No-weight cases have a fully lined interior to protect the contents of the case. Your possessions are important and should be shielded from impact and transit damage. The elastic tie-down straps will organize and secure your clothing, and prevent shifting, as it’s being rolled and transported. There is also a zip-off plush shoe bag for organized packing options inside all of the Pullman cases. The fabric is constructed of ultra-durable water and tear resistant high-density polyester and nylon. There is also a large, roomy u-shaped pocket on the outside of the vertical cases. This is handy for forgotten items and dirty clothes on your return trip. It is also the ideal place for a jacket, umbrella or sweater for the end of the trip. It will be readily accessible for any type of weather you may encounter when you arrive at your destination.

Strong zippers are one of the most important components on luggage. Ultra No-Weight bags are equipped with self-repairing nylon zippers with Smooth-Zip movement. This makes it easier to open and close, even when the case is fully packed. The easy-grip rubber coated zipper pullers are contoured for a more secure grasp, and can be locked for your security. Just remember to use TSA locks while traveling by airplane. Skyway Luggage Company also offers a 15-year limited warranty to assist the original purchaser in the unlikely event a defect should arise. The No-weight luggage provides you with both quality and value. It can save your back from struggling with heavy luggage and your pocketbook from the airline fees overweight baggage.