Shared Hosting- is also known as "Virtual
Hosting". In this multiple websites share the system
resources of a single server. In other words, it provides a
customer with a limited amount of server space to create their
web site. Bandwidth and storage space is distributed among
many clients, who all "share" the same physical
server. Hosting companies provide this service by maintaining
several large servers, and on those large servers they
maintain a number of virtual web hosts.
Shared hosting is generally aimed at beginners and
intermediate users .
Dedicated Hosting-Shared web hosting, no matter how
well managed, cannot be 100% reliable and stable. However if
you have your own dedicated server you can manage to avoid
most of the variables affecting the reliability and stability
of a server, commonly experienced by shared hosting accounts;
variables such as: overload, bad codes and scripts from other
users (especially beginners); and, too many applications and
components uploaded, and so on.
On a dedicated server you will install only software and
applications you want to use, while on a shared hosting server
you will find a host of other software and applications
installed for other users.
With dedicated server hosting you can provide instant support
to your own clients whenever required, which is not possible
if you are on a shared server.
Virtual private Hosting- To overcome the bridge between
shared hosting and dedicated hosting, comes the concept of
virtual private hosting. It still shares a machine or disk,
but the web server software and indeed the entire operating
system environment is usually isolated for each site in a
virtual hosting environment. So, you might have a computer or
disk with 20 sites on it, 20 different web servers for those
sites, and 20 isolated operating environments.
Advantages- There is a better control of resource
allocation and more enforceable distribution.
Difference between shared hosting and dedicated hosting-
The primary difference between dedicated and shared hosting is
how the web server is used. With Shared web hosting, the web
server is shared between many different websites. With
dedicated web hosting, the web server is dedicated to your web
site. Both services have their advantages and disadvantages.
Dedicated hosting is any day expensive than shared hosting.
What is disk space and bandwidth transfer?
Disk space is measured in Megabytes (MB) or Gigabytes (GB).
Megabyte roughly means 1,024,000 characters and Gigabyte
roughly means 1,024 Million characters. Imagine a character as
one key on your key board. These amounts determine how many
files, documents, or data you can have on your web site.
Network Transfer is also measured in Megabytes or gigabytes
which determines how much data (how many of your files,
documents or data) can be downloaded (transferred to) people
accessing your web site. The more people, or the more data
each person accesses on your web site the more data is
transferred on the network.
IP Address (Internet Protocol Address)
Often called a dotted quad, it is a a unique number consisting
of 4 or 6 parts (octets) separated by periods (or dots), and
which designates a hexadecimal address used to identify server
locations on the world wide web. It may appear like
this: 220.127.116.11 in its most common form, but could
also be expressed hex decimally. Note that IPv4
addresses have four octets, but the soon-to-be-in-use IPv6 IP
addresses will have six octets, and will appear as follows:
18.104.22.168.240.155. (whew!) Note that
In general, each domain name must resolve to an IP address
registered to the web server which is hosting the domain.
More commonly explained, an IP address is a number analogous
to a street address on the Web. When the internet was first
created in the 1960's as part of the Department of Defense, IP
addressing provided a means to identify unique locations on
the internet, much as street addresses are unique and identify
houses and buildings in a given city.
IP addresses may be dedicated, in which case they are
hard-assigned to a given computer or internet connection, so
that other computers may reach a given computer at an IP
address simply by using the IP address and without a
(canonical) domain name. Each web server has a dedicated
IP address or addresses, and individual domain names can have
dedicated IP addresses.
IPP (Internet Presence Provider)
This is another name for a hosting provider.
ISP (Internet Service Provider)
An ISP is an organization which creates connections from its
customers to the internet, thus allowing the customer to
access the internet. ISP's have come a long way in the
last 10 years, from a patchwork of local providers with a few
dominant nationwide players (such as AOL, Earthlink,
Mindspring, Juno, NetZero, MSN and Compuserve) to a
consolidated few national providers and few remaining local
providers, with new competition now arising around low-price
point (sub $5 monthly) dial-up access, and greater competition
among multiple large providers of high speed (broadband)
connections based on DSL (via telephone line) and cable (via
TV cable provider) service.
ISP's are sometimes also hosting providers, but have a very
poor record as such. In general, companies such as
realwebhost.net which specialize in domain name and hosting
services provide far better value, price, and telephone
technical support to assist customers with hosting needs.
Approximately a million bytes of data, or 8.3 million data
bits. 1024 of these will constitute one gigabyte.
One million of these will constitute one terabyte, and one
billion of these will make a petabyte.
NOC (Network Operation Center)
Sometimes called a Datacenter. This is the term for a secure,
managed network environment which may house tens or thousands
of Web servers with power backup and high-speed connections to
the Internet Backbone. NOCs usually have a mixture of OC-3 and
DS-3 connections, or higher (i.e., OC12).
Ultra-fast connectivity for mission-critical Internet needs,
typically connecting large ISPs and Hosting Providers to
internet backbones. An OC-3 ring or OC-3 link has
approximately 3 times the bandwidth capability of a T-3
POP3 / POP Email (E-Mail)
Post Office Protocol (POP) is used to retrieve e-mail from a
mail server, usually from a user's individual e-mail client
software such as Outlook Express or other applications, which
are often referred to as an "e-mail client."
Note that some newer software uses IMAP (Internet Message
Access Protocol) or APOP. Post Office Protocol
requires a username and password to access mail on a server.
There are three versions of POP, with the latest being POP3,
which has now become virtually the only POP version in use.
Secure Socket Layer (SSL) protocol
A secure transmission protocol whereby data transmitted
between server and client is encoded using an encryption key
(usually 128-bit) in such a way that it virtually cannot be
"cracked" and read by any party which may intercept
the information in between the server and client.
SSL protocol is used on virtually all websites which feature e-commerce
purchasing and transmission of payment data, as well as most
websites which require the exchange of sensitive information
in between the client and the server, such as medical
information, personal data, even name and address data.
To use SSL, you must have a dedicated IP address for the
server, and a Secure SSL Certificate such as those sold at
realwebhost.net at the lowest price on the internet for the
highest level of security and the best compatibility with the
widest range of browsers of any certificate on the market.
Note that a Secure Socket Layer only provides for secure
transmission of data and does not perform credit card
validation, verification, or merchant processing, although
those tasks are all performed from clients entering
information onto secure pages.
This is a broad term which generally refers to any computer
which provides data to another computer (client) or
clients across a wide variety of networks. Servers
can be simple file servers located on local area networks
(LAN) within an office or computing environment, or they can
be vast internet servers sending out web pages to computers
which query those pages for their content and data.
The term server is almost always used in conjunction
with the term "client" and frequently referred to as
the "client-server" relationship. While not
common in early computing for individual home users, client-server
relationships now are very pervasive as nearly every
computer in home use has some type of connection to the
internet, and utilizes client-server relationships to handle
everything from online gaming software to updates of antivirus
and utility software to simple web surfing!
The server functions not only as the computer which provides
data and is the central repository of information, but also as
gatekeeper between multiple "client" computers.
A server can also be called a "host" because it
hosts the data "served" to "clients."
This is increasingly common with regard to internet web
SSI (Server Side Includes)
Server Side Includes (SSI) is a practice whereby a set of tags
are embedded in the HTML code of a web page and which are
populated (replaced by something else) when the web page is
actually viewed by the user. The content which the
server provides to these tags is determined by many factors,
and can be programmed by the web designer to provide specific
and unique information to different types of web visitors
(persons viewing the web page). This is often done
in situations where the server makes a determination as to
which user is logged in an provides specific information to
that user relative to that user's account with with web host.
SSI is run by a Perl script on UNIX/Linux servers.
A UNIX or Linux server can offer varying degrees of access to
use of the computer by the creation of a shell account
allowing the user to log in and browse, change, modify,
update, and delete files from a given set of files and folders
to which the user has permissions established. Access to
shell accounts by users is typically done by Telnet (not
secure) or by more secure means such as SSH, the popular
software for which is called SecureCRT.
Shell accounts are considered very dangerous from a security
point of view when the server is a shared web server (has
multiple client users) because crackers can often use
unscrupulous means to gain full (root) access to servers from
within shell accounts without full access. This allows
for mischief to occur. UNIX/Linux servers are
generally viewed as far more safe .
A dedicated line connection capable of carrying data at
1,544,000 bits-per-second. At maximum theoretical capacity, a
T-1 line can move a megabyte in less than 10 seconds.
Although once considered to be a very substantial bandwidth,
T-1 is now eclipsed by even the download speed of many cable
modems which operate at up to 3,500,000 bits-per-second.
To get an idea of what this speed can do, note that this high
transmission rate is still not fast enough for full-screen,
high-resolution, full-motion, uncompressed television video,
for which is needed at least 10,000,000 bits-per-second.
A high bandwidth, dedicated line connection capable of
carrying data at 44,736,000 bits-per-second, or approximately
30 times the speed of a T-1 line.
The command and program used to login from one Internet site
to another. The telnet command/program gets you to the login:
prompt of another host. Note that Telnet is not
considered secure as it is not encrypted. For secure
communications and exchange of passwords, users should always
use the SSH protocol rather than Telnet. SSH1 and SSH2
protocols provide the needed security. The software SecureCRT
is capable of all of these methods of communication and is
the most popular software in use.
Approximately a trillion bytes of data, or 1000 million
gigabytes or 1,000,000 MB, or 8 million data bits. One
thousand of these will constitute one gigabyte. One
million of these will constitute one terabyte.
Total amount of data which is sent from from a web site to
client computers accessing the sit. Transfer
measurements include all all HTML code from all displayed web
pages, as well as all images, sounds, video, and downloaded
data. See also Data Transfer for more information.
An operating system developed by Bell Laboratories (Bell Labs)
back in the 1960s (yes!) which is designed to be secure,
simple, and powerful. UNIX operating systems are
used typically on business-class computers typically used as
"servers" which provide information to client
computers for databases, websites, or other corporate
applications. UNIX has numerous variants including IRIX
(SGI), Solaris (Sun), and the most popular which was developed
by Berkeley Systems Division and known as BSD Unix. The
version of BSD Unix which has been compiled and offered under
a free GNU license is called "FreeBSD UNIX" and is
available to the general public at no cost. It can be
downloaded from a number of websites. Berkeley
Systems Division BSD UNIX has spawned many derivative
operating systems including including Apple's OSX, and the now
extremely popular Linux operating system, an open-source
operating system invented by (and named after) Finland's Linus
Torvalds and developed into the world's most popular UNIX
variant, with root kernels free to all users under GNU public
URL (Uniform Resource Locator)
This is the standard way to give the address of any resource
on the internet whether or not is part of the World Wide Web
(www), but as long as it can be accessed with an hyper-text
transfer protocol or file transfer protocol address call, and
is a part of a server listed on the canonical domain name
registration tables to resolve to an IP address.
The term "resource" here is used to refer to any web
page, graphic, sound file, or any other resource which one can
call from a URL. A URL will begin with http://
(hypertext transfer protocol) or https:// (hypertext transfer
protocol secure) or ftp:// (file transfer protocol)
with few or no other variants. Note that a URL can
refer directly to an Internet Protocol address (IP address)
such as this: http://192.168.1.1.
Virtual hosting is a type of hosting where you are given
control of your own "server" with your hosting
service. However, this "virtual server" is not
an entire computer server. This server is called
"virtual" because it is one of multiple
"virtual" servers located on a single physical
server computer. There can be anywhere from two
"virtual servers" on an actual server, up to 400 or
even 500 virtual servers on an actual server. The
virtual servers are almost always UNIX or Linux, and each have
assigned to them a portion of a hard drive using a UNIX
"jail" partitioning software so that no virtual
server can access the partitions assigned to a different
virtual server. Virtual servers have separate IP
addresses assigned to each server, and each virtual server
functions much like a dedicated server, able to do almost
everything that a dedicated server can do in terms of serving
as an internet host.
A computer or a software package, that provides a specific
kind of service to client software running on other computers.
The term can also refer to a particular piece of software,
such as Apache for UNIX/Linux, which provides actual web
server functionality to a server computer. For more
information, see "Server" defined above.
Web Site / Website
A web site is a collection of web pages that reside together
on the World Wide Web and are connected with a common theme,
and usually a common domain name. Websites can exist
across multiple servers, and multiple IP addresses, and even
multiple domain names, but have a common theme, and are
inter-connected by hyperlinks in such a way that they function
together as a complete site.
Web Site Traffic Reporting
Software which reports the amount of activity on a website,
and can also provide more specifics, including important
information such as traffic broken down by day, hour, minute,
source of traffic, pages accesses, server which referred the
pages, and even the search term which was used to find the
given page. Information is divided by hits (number of
items accessed including pages, graphics, etc.), page views
(html pages viewed), and actual bandwidth used in the access
of these items. Popular reporting tools include Analog,
Webalizer, and Awstats.
Aliases can be used to identify different e-mail accounts and
can redirect mail to other POP3 accounts or to another folder
within the same address. A catch-all alias can be used to
process e-mail from unknown senders, and is often known as a
Auto responders are not true email accounts, but they do have
an e-mail address and reply to anyone who sends them an
e-mail. This is a handy tool if you want to send out the same
information to anyone who asks for it. The pre-formatted
e-mail is automatically sent as a reply, guaranteeing that
every response is identical.
Bandwidth is a term used to describe the amount of data that
can pass through a communications channel (such as an Internet
connection) in a given period of time. Bandwidth is often
A browser is a program that allows access to the web visually
by allowing requests from special files known as HyperText
Markup Language, The language of websites. There are many web
browsers out there to choose from. Microsoft’s Internet
Explorer program is one of the most popular.
A client is a computer program that can download files for
editing, run applications, or request application based
services from a file server. An FTP client is a common
software package used for uploading and maintaining websites.
Dedicated Hosting is a service that Web hosting companies
provide to their customers whose websites generate a lot of
traffic. Essentially, and entire server is used for a single
customer, ensuring that all of the server’s resources are
used to that customer’s needs. This is important for
companies that do business online, as heavy traffic tends to
eat up bandwidth and make sluggish websites.
DNS stands for “Domain Name System”, and it is a way for
institutions differentiate themselves from each other. The
most famous domain is the “dot com” (.com) domain, which
denotes a commercial website. Other domains include the name
of the host country (.us, .ca) or a specific sector of society
(.mil for military).
Domain Parking refers to when individuals or companies by up
domain names before they are ready to use them. A simple web
page describing the future content or advertising the new
owners of the website is then “parked” on the address in
order to generate interest before the website actually goes
Simply put, when you download data or programs you are
transferring data from a server or host computer to your own
Created by Roy Tomlinson for ARPANET in 1971, e-mail is a
system for sending and receiving messages electronically over
a computer network. E-mail has revolutionized personal
communications in the 21st century.
Forwarding accounts are special e-mail accounts that allow
e-mail to be redirected to another account as soon as they
come in. This can be helpful when you have several accounts
running at once and would like to consolidate your email to a
FTP stands for File Transfer Protocol. It is a communications
protocol that governs the transfer of files from one computer
to another over a network.
A gigabyte is a unit of computer memory or data storage
capacity equal to 1,024 megabytes. One Gigabyte (Gb) is equal
to about one billion bytes (230 bytes).
HTML stands for HyperText Markup Language. HTML is a special
computer language used to structure the text and multimedia
documents of a website. It also is used to create hypertext
links between electronic documents. HTML was invented in 1991
by Tim Berner-Lee, and makes use of specifications made by
URLs (Uniform Resource Locators).
HTTP stands for HyperText Transfer Protocol. HTTP is mostly
used to request and transmit web pages and web page components
over the Internet or other computer networks.
The Internet is an interconnected system of networks that
connects computers around the world. The Internet was
developed by many different minds, but most agree that the
real birth of the modern Internet was the ARPANET program in
the 1960’s. The Internet connects networks together using
the TCP/IP protocol.
ISP stands for Internet Service Provider.
Managed hosting is when a web hosting company provides
services for their dedicated servers. Managed hosting can be
thought of as having the space and freedom of a dedicated
server, but with the perks and services that are provided to
shared-server packages. As businesses continue to grow online,
so has the need for managed security, storage, and database
A megabyte is a unit of computer memory or data storage
capacity equal to 1,048,576 bytes of information. A single
keystroke is equal to a single byte of information.
Packet Switching is essentially a method of data transmission
where small blocks of data are transmitted rapidly over a
channel (such as a phone line) that is dedicated to the
connection only for the duration of the packet's transmission.
Packet switching is one of the fundamental concepts
responsible for computer networking and the Internet. It was
developed in the 1960’s by Paul Baran, and was designed to
help the military build a communications network capable of
withstanding a nuclear attack.
A POP3 account is a standard e-mail inbox, a place on the
server used for storing incoming e-mail messages. E-mail
accounts usually come as “POP3” accounts. A specific
amount of space is often allotted to a POP3 account, and going
over can cause incoming mail to “bounce”, or return to
A server is a computer that processes requests for HTML and
other documents that are components of a webpage. All website
hosting takes place on a server of some type. A server can be
as small as a personal computer or span thousands of Gigabytes
in the case of large telecommunication companies.
Shared hosting refers to the practice of splitting up server
resources among many customers in order to defer the cost to
many different customers. This means that the shared host
accounts are more affordable. Additionally, shared servers are
often run by the ISP itself, meaning that they handle security
issues and technical operations as they arise in a
Storage on a server is simply the memory space available to
< their of needs the on based storage amount
tailor often companies hosting>
TCP/IP stands for Transmissions Control Protocol and Internet
Protocol. TCP is the host to host connection used by computers
to govern networking and IP passes the individual packets of
information between computers. TCP/IP is responsible for the
interconnecting of all the smaller networks that make up the
Traffic on a website refers to the amount of people who visit
the site on a given moment. Traffic also describes all of the
interaction that visitors take part in, such as surfing or
using e-mail while on that site. Companies pay particular
attention to the amount of traffic on their sites because it
gives them an indicator of how successful their website is.
Transfer rate and bandwidth is essentially the same thing,
referring to the amount of data that can flow through a
communications channel over a given time.
Uploading refers to transferring files from a client, such as
your home computer, to a host, such as your web hosting
company. Uploading is usually accomplished with the help of an
FTP client. Think of it as the opposite of downloading.
URL stands for Uniform Resource Locator. A URL is an Internet
address (for example, http//:www.domainname.com/example).In
this instance, the URL consists of an access protocol (HTTP),
the domain name (www.domainname.com) and optionally the path
of a file or resource residing on the server (/example).
Traditionally, the domain portion (.com) of the URL denotes
what sector of society the website belongs to. (.com) denotes
a commercial site.
A web server is a computer that stores websites and their
related files for viewing on the Internet. Visitors wishing to
access the sites and files simply type in the corresponding
URL to the site they wish to view. Web hosting is big business
in the age of electronic commerce.
“WWW” stands for World Wide Web. The World Wide Web is the
collection of networks that make up the Internet. The World
Wide Web incorporates HTML files that can be viewed by any web
browser connected to the Internet. The World Wide Web was
created by the folks at CERN in 1991 in order to create a
global network out of the many networks operating in various
parts around the world.