What is server?
Server may be a generic term applied to any machine running
a “service” application. That service being performed might include
access to shared file server or access to shared printers (print server).
There are other sorts of servers besides file and print servers. Communication servers offer access to remote devices outside of a network of computer. That access could be to a mainframe or minicomputer, or other network, workstations or servers.
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| Different Types of Servers |
Typically, a
machine that permits multiple users to
share one or more modems for external connections is
named a modem server. Modem servers are getting increasingly popular today as more and
more companies find the necessity to
access external information or E-mail services.
Types of Server
Dedicated File Servers
1. Simple Mail Transfer Protocol (SMTP)
2. Extended Simple Mail Transfer Protocol
(ESMTP)
3. Post Office Protocol 3 (POP3)
4. Internet Message Access Protocol (IMAP)
File Servers
What are File Servers?
A digital computer may be a computer
attached to a network that has the first purpose
of providing a location for the shared storage of data File
Server (such as documents, sound files, photographs, movies, images,
databases, et cetera) which will be
accessed by the workstations that are attached to the network. As distinguished
from timesharing or a mainframe (where a central computer provides calculation
resources for “dumb” terminals) a digital
computer is meant primarily to
enable the rapid storage and retrieval of
knowledge where the heavy computation is provided by the
workstations.
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| File Server |
File servers can also be categorized by the tactic of access: remote servers are frequently accessed by FTP (they run an FTP server) or by HTTP (they run an internet server).
One File serving computer could also be accessible by multiple means: it's going to run an FTP server, an HTTP
server, a database server, and a print spool.
The File servers do their work only for the asking from the nodes. The server cannot and doesn't behave arbitrarily on its own.
Servers of File generally offer some sort
of system security to limit access to files to specific users or
groups.
Since the crucial function of a digital computer is storage, hardware has been developed to work multiple disk drives together as a team, forming a disk array.
Types of File Servers :
A dedicated file server
A
dedicated server is usually designed
specifically to be used as a digital computer, with workstation attached for reading
and writing files and databases.
A non-dedicated file server
A
workstation may share files servers with other workstations on the
network directly however by turning on its “server” service then by creating a “share” to
the present process creates a non-dedicated digital computer that's primarily getting used as a workstation.
Application Servers
What are application servers?
An
application server is additionally called app
server, and application server may be a program
that handles all application operation between users and an
organization’s backend business application or database.
What is dbms? (What database management system) |
Server of Application may be a software
engine that delivers applications to client computers or devices, typically
through the web and using the hypertext
transfer protocol. Application servers are distinguished from web server-side dynamic content and frequent integration with database engines.
An application of server handles most, if not all, of the business logic and data access of the appliance (a.k.a. centralization).
The main advantage of an application servers is that the simple application development, since applications needn't be programmed; instead, they're assembled from building blocks provided by the appliance servers.
Application servers run on many platforms, and therefore the term applies to 2 different software applications.
The term is employed to ask server of web-based applications, like integrated platforms for e-commerce, content management systems, and web-site builders.
Alternatively, the term is employed as a synonym for web application framework.
Application server products typically bundle middleware to enable applications
to intercommunicate with dependent applications, management systems, chart
programs, and like web server.
Some application server also provide an API,
making them OS independent. Portals
are a standard application server
mechanism by which one point of entry is
provided to multiple applications.
Advantages of application servers
Data and code integrity
By
centralizing business logic on a private or
small number of server machines, updates and upgrades to the appliance for all users are
often guaranteed. There's no
risk of old versions of the appliance accessing
or manipulating data in an older, incompatible manner.
Centralized configuration
Changes to the
appliance configuration, like a move of database server, or
system settings, are often done centrally.
Security
A
central point through which access to data and portions of the appliance itself are
often managed is taken into account a
security benefit, devolving responsibility for authentication fare way from the doubtless insecure
client layer without exposing the database layer.
Performance
By
limiting the network traffic to performance tier traffic, it's perceived that
the client-server model improves the performance of
big applications in heavy usage environments.
Total cost of ownership (TCO)
In
combination, the advantages above are
considered to represent a price saving
to a corporation when developing enterprise
applications. In practice, however, the technical challenges of writing
software that conforms thereto paradigm combined with the
necessity for software distribution to distribute client code
somewhat negate these benefits.
Print servers
A
print server of printer server may be a computer
or device to which one or more printers are connected, which may accept print jobs from external client
computers connected to the print server over a network. The print server then sends the info to the
acceptable printer that it manages.
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| Print Servers |
The term print server can refer to:
A
host computer running windows Operating system in computer with one or more
shared printers. Client computers connect using microsoft network printing
protocol.
A computer running some OS other then windows, but still implementing the microsoft network printing protocol (typically samba running on a UNIX or Linux computer).
A print server may be a computer or device that's being connected with another print devices or printers. Print server holds an OS like windows 2000. Windows 2003 and therefore the client computers send print requests to the print server.
What is network topology and Explain its types?how to 4 categories of network explain in english |
The print server servers there requests on the primary come first serve basis but there are
features within the printing software with
which the print jobs are often prioritized
i.e. you'll give preferences to some
printing requests. Client computers connect with the print server by using the
microsoft network in computer printing protocol.
Dedicated print servers
support an outsized number of the
protocols like TCP/IP, NetBEUI, IPX/SPX,
LPD/LPR and NetBIOS.
Mail servers
What are mail servers?
A
mail server (also referred to as a
mail agency or MTA, a mail
router or an online mailer) is an
application that receives incoming e-mail from local users (people
within an equivalent domain) and remote
senders and forwards outgoing e-mail for delivery. A computer dedicated to
running such applications is additionally called
a mail server.
Microsoft exchange, exim, qmail and sendmail
are among the more common mail server programs.
The mail servers works in conjunction
with other programs to form up what's sometimes mentioned as
a messaging system. A messaging system includes all the applications
necessary to stay e-mail moving because it should.
Once
you send an e-mail message, your e-mail program (such as outlook
or Eudora ) forwards the message to your mail server which successively forwards it either to a different mail server or to a holding area
on an equivalent server called a message
store to be forwarded later.
As a rule, the system uses SMTP (simple mail
transfer protocol) or ESMTP (extended SMTP) for sending e-mail, and
either POP3 (post office protocol 3) or IMAP (internet message access
protocol) for receiving e-mail.
Servers of Mail support an
outsized number of the protocols like SMTP,
ESMTP, POP3 and IMAP.
SMTP
SMTP (simple mail transfer protocol) may be a TCP/IP protocol want to send e-mail.
SMTP usually is implemented to work over internet port 25.
SMTP usually is implemented to work over internet port 25.
ESMTP
ESMTP (extended simple mail transfer protocol)
specifies extensions to the first protocol
for sending e-mail that supports graphics, audio and video files, and text in
various national languages. The first internet
protocol for sending e-mail are described in request for comments (RFC) 822,
standard for the format of ARPA internet text messages, and in RFC 821, simple
mail transfer protocol (SMTP).
Currently, most commercial e-mail servers and clients support ESMTP.
POP3
POP3 (post office protocol 3) is that the most up-to-date version
of a typical protocol for receiving
e-mail. POP3 may be a client/server
protocol during which e-mail is
received and held for you by your internet server. The conventional port number for POP3 is 110.
IMAP
IMAP (internet message access protocol) may be a standard protocol for accessing e-mail
from your local server.
POP3 and IMAP affect the receiving of e-mail from your local server and aren't to be confused with simple mail transfer protocol (SMTP), a protocol used for exchanging e-mail between points on the web. Typically, SMTP is employed for sending only and POP3 or IMAP are wont to read e-mail.
Proxy servers
In
an enterprise the uses and therefore the internet,
a proxy server may be a server that
acts as an intermediary between a workstation user and
therefore the internet in order that the
enterprise can ensure security, administrative control, and caching service.
A
proxy is related to or part a gateway
server that separates the enterprise network and a firewall server that
protects the enterprise network from outside intrusion.
In computer networks, a proxy server may be a server which services the requests of its clients by forwarding requests to other servers.
A client connects to the server
of proxy, requesting some service, sort of a file
connection, web page, or other resource, available from a special server the
provides the resource by connecting to the
required server and requesting the service on behalf of the client.
A proxy server may optionally alter the client’s request or the server’s
response, and sometimes it's going to serve
the request without contacting the required server.
During this case, it
might ‘cache’ the primary request
to the remote server, so it could save the
knowledge for later, and make everything as fast as possible.
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| Proxy Server |
A proxy
server that passes all requests and replies unmodified is usually called a
gateway or sometime tunneling proxy.
A Server
of Proxy can be placed in the user’s local computer or at specific key
points between the user and the destination server or the internet.
A
proxy server receives an invitation for an internet service (such as an online page request) from a user. If it passes filtering requirements, the proxy
server, assuming it's also a cache
server, looks in its local cache of previously downloaded sites.
If it finds the page, it returns it to the user without having to forward the request to the web.
If it page
is not in the cache, the proxy server, acting as a client on behalf of
the user, uses one of its own IP addresses to request the page from the server
out on the internet.
When the page is returned, the proxy of server
relates it to the first request and
forwards it on to the user.
To the user, the proxy server is invisible; all internet requests and returned responses appear to be directly with the addressed internet server. (The proxy isn't quite invisible; its IP address has got to be specified as a configuration choice to the browser or other protocol program).
To the user, the proxy server is invisible; all internet requests and returned responses appear to be directly with the addressed internet server. (The proxy isn't quite invisible; its IP address has got to be specified as a configuration choice to the browser or other protocol program).
An advantage of a proxy server is that its cache can serve all users in computer network. If one or more websites are frequently requested, these are likely to be within the proxy’s cache, which can improve user reaction time. In fact computer network, there are special servers called cache servers. A proxy can also do logging.
Web servers
A
computer on a network that it runs specific software that permits other selected users on the network to access information and
resources that are stored on the online server.
The
information and resources stored on the online server are formatted during a way consistent with the HTTP protocol (hypertext transfer protocol).
The web server manages and controls the utilization of WWW services there on computer. And lots
of more (FTP server, streaming audio server, streaming video
server).
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| Web Server |
Every web server has an IP address and possibly a domain name. for example, if you enter
the URL https://www.worldteachesus.com/index.html in your browser, this sends a request
to the server whose domain name is worldteachesus.com.
The server than fetches the page named index.html and sends it to your
browser.
Any computer
can be turned into a web server by installing server software and connecting
the machine to the internet.
There
are many web server in computer network software applications,
including ownership software from NCSA and
Apache, and commercial packages from Microsoft, Netscape etc all.
The term or types of web server can mean one of two things:
A bug that's to blame for accepting HTTP requests from clients, which are noted
as web browsers, and serving them HTTP responses alongside optional data
contents, which usually are pages
such as HTML documents
and linked objects (images, etc.).
A computer
then runs a computer program as described above.
Question:
1. What is Network Server?
2. What is full form of SMTP?
3. What is full form IMAP?
4. What is Web Server?
5. What is Application Server in Explain?
6. What is full form of POP 3 and ESMTP?
7. What is File servers?
8. How many types of servers are there?
9. How many types of servers are there and which ones?
10. Draw a diagram of the Printer server?
FAQ ON PAGE CHECK LIST
1. What proxy server to use?
FAQ ON PAGE CHECK LIST
1. What proxy server to use?
A Server of Proxy can be placed
in the user’s local computer or at specific key points between the user and the
destination server or the internet.
2. How server works?
There are other sorts of servers besides file and print servers. Communication
servers offer access to remote devices outside of a network of computer. That access could be to a mainframe or minicomputer, or other network, workstations or servers.
3.What are print server
properties?
A host computer running windows Operating system in computer with one or
more shared printers. Client computers connect using microsoft network printing
protocol.
A computer running some OS other then windows, but still implementing the
microsoft network printing protocol (typically samba running on a UNIX or Linux
computer).
A print server may be a computer or device that's being connected with another print devices or printers. Print server holds
an OS like windows 2000.
Windows 2003 and therefore the client
computers send print requests to the print server.
4. How file server works?
As distinguished from
timesharing or a mainframe (where a central computer provides calculation
resources for “dumb” terminals) a digital
computer is meant primarily to enable the rapid storage and retrieval of knowledge where the heavy computation is provided by the workstations.
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