IIS DNS, DHCP concepts

Answer Posted / global_pradeep

IIS :Internet Information Server (IIS) is a World Wide Web
server, a Gopher server and an FTP server all rolled into
one. IIS means that you can publish WWW pages and extend
into the realm of ASP (Active Server Pages) whereby JAVA or
VBscript (server side scripts) can generate the pages on
the fly. IIS has fun things like application development
environment (FrontPage), integrated full-text searching
(Index Server), multimedia streaming (NetShow), and site
management extensions.


DHCP :Dynamic Host Configuration Protocol (DHCP) is a
network protocol that enables a server to automatically
assign an IP address to a computer from a defined range of
numbers (i.e., a scope) configured for a given network.

DHCP assigns an IP address when a system is started, for
example:

A user turns on a computer with a DHCP client.


The client computer sends a broadcast request (called a
DISCOVER or DHCPDISCOVER), looking for a DHCP server to
answer.


The router directs the DISCOVER packet to the correct DHCP
server.


The server receives the DISCOVER packet. Based on
availability and usage policies set on the server, the
server determines an appropriate address (if any) to give
to the client. The server then temporarily reserves that
address for the client and sends back to the client an
OFFER (or DHCPOFFER) packet, with that address information.
The server also configures the client's DNS servers, WINS
servers, NTP servers, and sometimes other services as well.


The client sends a REQUEST (or DHCPREQUEST) packet, letting
the server know that it intends to use the address.


The server sends an ACK (or DHCPACK) packet, confirming
that the client has a been given a lease on the address for
a server-specified period of time.


DNS :Domain Name System (DNS) is a database system that
translates a computer's fully qualified domain name into an
IP address

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