Assignment 28.1
Server
A server also known as host is a special computer connected
directly to the internet. It provides different types of services
such as Web servers, online gaming and streaming channels on
a network. Every server has its own Internet Protocol (IP)
address to differ from others. It can be set up by installing an
appropriate software like Windows Server in the computer,
which permits to control and manage data and the status of the
webpages available to the public. Servers can be accessible
thanks the protocol called hypertext transfer protocol (HTTP). Any electronic devices that
has access to the internet are called Client. For example, a client requests files to a web
host which serves the files following the set rules of protocol HTTP, to show the web page.
There are some features that servers contains such as support of large data which allows
storing data of different web sites and control of bandwidth to adjust network traffic which
regulates the traffic over the bandwidth to avoid down times. The cost of configuring a
server could, vary based on the services offered by different companies, there are four
main elements to take in consideration:
1.how much data space is going to be need, and its cost depends on (price per unit)
2.whether using a Virtual Private Network (VPN) or direct connection
3.Maintenance of the web server e.g. Firewalls (Prices from £60 to £400 per month)
4.Implementation, how the physical server will be available in the internet (prices from
£400 to £4500 per month)
Router
A router is a hardware device that can be either Wireless or
wired. Typically, it has a port for the power, and 5 ports for the
Ethernet wire, one of them is coloured differently because it must
be plugged to the modem, which connects the network to the
internet. It is composed by a CPU and RAM; router joins networks
together and manages information incoming and outgoing on other networks. An
information is known as packet and each packet has a certain IP address protocol. The
path they take to reach a destination is decided by the routers in this case called hops. As
every router knows the topology of many other routers they select the best path for a
packet. The reliability of a protocol is based on the network fault tolerant which changes
the path in case of congestion, if having more routers on the networks, the network fault
tolerant could work efficiently by increasing the reliability at the same time.
Protocols
Protocols are a set of rules for communication between two electronic devices. Computers
need to follow a certain protocol, in order to have a successful communication. For
example, there are so many different types of protocols such as TCP, HTTP, IP, FTP,
DNS etc. These are the most common in nowadays, each of them has a different way of
communication.