Rbl4m: 09/05/12

Wednesday 5 September 2012

Click here for oracle site version 11

Click here for oracle site version 10

email : hassam_zafar10@yahoo.com

Password : chawaL85

copy and paste the name and password

Web Eng. ( 5 Sep. 2012 )

Assignment

Submission date : 10 Sep 2012 -expected

Problem:-

write down TCP/IP server with GUI just like any chat messenger and that TCP/IP server can connect min. 2 clients and server can locate port of the socket that is going to be created against particular client.Server can trace the ip address of client

Hint by Sir: server should be multi thread

Network design and Management ( 5 Sep. 2012 )

Assignment

make 8 subnets of following IP

203.81.192.0/18

Network design and Managent ( 5 Sep. 2012 )

Sub-netting

Click here for sub-netting by Cisco Support Community

Click here for sub-netting by serverfault

Click here for detailed view about IP

Click here for List of assigned /8 IPv4 address blocks

IPv4 address is of 32 bits. It consists of four octets

Class	1^st Octet Decimal Range	1^st Octet High Order Bits	Network/Host ID (N=Network, H=Host)	Default Subnet Mask	Number of Networks	Hosts per Network (Usable Addresses)
A	1 – 126*	0	N.H.H.H	255.0.0.0	126 (2⁷ – 2)	16,777,214 (2²⁴ – 2)
B	128 – 191	10	N.N.H.H	255.255.0.0	16,382 (2¹⁴ – 2)	65,534 (2¹⁶ – 2)
C	192 – 223	110	N.N.N.H	255.255.255.0	2,097,150 (2²¹ – 2)	254 (2⁸ – 2)
D	224 – 239	1110	Reserved for Multicasting
E	240 – 254	1111	Experimental; used for research

Note: Class A addresses 127.0.0.0 to 127.255.255.255 cannot be used and is reserved for loopback and diagnostic functions.

Private IP Addresses

Class	Private Networks	Subnet Mask	Address Range
A	10.0.0.0	255.0.0.0	10.0.0.0 - 10.255.255.255
B	172.16.0.0 - 172.31.0.0	255.240.0.0	172.16.0.0 - 172.31.255.255
C	192.168.0.0	255.255.0.0	192.168.0.0 - 192.168.255.255

Literal meaning of sub-netting is to add something ( bits ) to network bits
First ip of network is network ip
Last ip of network is broadcast address
Second ip of network or first useable ip will be gateway

There important steps for making sub-nets

Make sub-net mask
Find out no of bits required for sub-netting
Find out new sub-net mask

Than make new sub-net ips

Example is remaining .................

Business Process Management ( 5 Sep. 2012 )

Plz suggest Topic name / heading

Rise in Frequency of goods ordered
Global competitors
Cycle of time
Faster information interchange
Need for quick decision making
The need to adept ( ڈ ا لنا ) new changing demands

Web engineering ( 5 Sep. 2012 )

import java.net.*;
import java.io.*;

class MyServer_aft{

public static void main(String p[])throws Exception{
    ServerSocket ss;
    Socket s;
    BufferedReader in;
    String str;

    ss=new ServerSocket(4000);
    s=ss.accept();
    in=new BufferedReader(new InputStreamReader(s.getInputStream()));

    while((str=in.readLine())!=null){

        System.out.println(str);
    }
          }
              }

----------------------------

compile and run this program than
go to run dialog box and type in " Telnet "
a command prompt will open than
type in " o "
if YOU are connecting to a local server that means You are connecting to your own P.C than
type in " 127.0.0.1 "
hit enter
type any message its will show on other window

if You are connecting over internet than provide IP address of other user to whom You are going to be connect.

Java books

Click here for java network programing book

Click here for O'Reilly - Java and XML 2nd Edition

O'Reilly - Java Network Programming 2nd Edition

Click here for book (Java 2 compelete reference)

Click here for java books collection in form of torrent

Click here for O'Reilly - O'Reilly Ultimate Collection - 352 books [PDF]

Business Process Management ( 5 Sep 2012 )

Click on followings links for book and slides

Book of B.P.

Government accounting

r1 ........

Web Engineering( 3 Sep. 2012 )

Web

A network of networks is called Internet

the world wide web (abbreviated as www or w3, commonly known as the web), is a system of interlinked hypertext documents accessed via the internet. with a web browser, one can view web pages that may contain text, images, videos, and other multimedia, and navigate between them via hyperlinks.Using concepts from his earlier hypertext systems like enquire, british engineer and computer scientist sir tim berners-lee, now director of the world wide web consortium (w3c), wrote a proposal in march 1989 for what would eventually become the world wide web. at cern, a european research organization near geneva situated on swiss and french soil, berners-lee and belgian computer scientist robert cailliau proposed in 1990 to use hypertext "to link and access information of various kinds as a web of nodes in which the user can browse at will", and they publicly introduced the project in december of the same year.

Client

A client is an application or system that accesses a service made available by a server. The server is often (but not always) on another computer system, in which case the client accesses the service by way of a network. The term was first applied to devices that were not capable of running their own stand-alone programs, but could interact with remote computers via a network. These dumb terminals were clients of the time-sharing mainframe computer.

The client–server model is still used today. Client and server can run on the same machine and connect via Unix domain sockets, or other inter-process communication techniques such as shared memory, or named pipes. Using Internet sockets a user may connect to a service operating on a possibly remote system through the Internet protocol suite. Servers set up listening sockets, and clients initiate connections that a server may accept. Web browsers are clients that connect to web servers and retrieve web pages for display. Most people use email clients to retrieve their email from their internet service provider's mail storage servers. Online chat uses a variety of clients, which vary depending on the chat protocol being used. Multiplayer online games may run as Game Clients on each local computer.

Server

A program that can accept a remote request and can send back response accordingly. For example Tomcat, IIS, oracle, mysql, informax

In most common use, a server is a physical computer (a computer hardware system) dedicated to running one or more services (as a host), to serve the needs of the users of other computers on the network. Depending on the computing service that it offers it could be a database server, file server, mail server, print server, web server, gaming server, or some other kind of server.

In the context of client-server architecture, a server is a computer program running to serve the requests of other programs, the "clients". Thus, the "server" performs some computational task on behalf of "clients". The clients either run on the same computer or connect through the network.

Port

Just a number that is going to be mark on a server type program.Its range is 1 - 65535 but recommended use is except 1 - 1024 because this may be used for operating system.

In computer networking a port is an application-specific or process-specific software construct serving as a communications endpoint in a computer's host operating system. A port is associated with an IP address of the host, as well as the type of protocol used for communication. The protocols that primarily use the ports are the Transport Layer protocols, such as the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) of the Internet Protocol Suite. A port is identified for each address and protocol by a 16-bit number, commonly known as the port number. The port number completes the destination address for a communications session. Thus, different IP addresses or protocols may use the same port number for communication, e.g. on a given host or interface UDP and TCP may use the same port number, or on a host with two interfaces, both addresses are associated with a port having the same number.

Socket

WebSocket is designed to be implemented in web browsers and web servers, but it can be used by any client or server application. The WebSocket Protocol is an independent TCP-based protocol. Its only relationship to HTTP is that its handshake is interpreted by HTTP servers as an Upgrade request.[2] The WebSocket protocol makes possible more interaction between a browser and a web site, facilitating live content and the creation of real-time games. This is made possible by providing a standardized way for the server to send content to the browser without being solicited by the client, and allowing for messages to be passed back and forth while keeping the connection open. In this way a two-way (bi-directional) ongoing conversation can take place between a browser and the server. A similar effect has been achieved in non-standardized ways using stop-gap technologies such as Comet.

In addition, the communications are done over the regular TCP port number 80, which is of benefit for those environments which block non-standard Internet connections using a firewall. WebSocket protocol is currently supported in several browsers including Internet Explorer, Safari, Firefox and Google Chrome. WebSocket also requires web applications on the server to be able to support it.

Stream

In computing, the term stream is used in a number of ways, in all cases referring to a sequence of data elements made available over time. A stream can be thought of as a conveyor belt that allows items to be processed one at a time rather than in large batches.

On Unix and related systems based on the C language, a stream is a source or sink of data, usually individual bytes or characters. Streams are an abstraction used when reading or writing files, or communicating over network sockets. The standard streams are three streams made available to all programs.

Pipelines can also be understood as streams as well as any unlimited (non-packaged) information that is inserted by a device.

In the Scheme language and some others, a stream is a lazily evaluated or delayed sequence of data elements. A stream can be used similarly to a list, but later elements are only calculated when needed. Streams can therefore represent infinite sequences and series.[1] See Stream (type theory).

Protocol

protocol is a system of digital message formats and rules for exchanging those messages in or between computing systems and in telecommunications. A protocol may have a formal description.

Protocols may include signaling, authentication and error detection and correction capabilities.

A protocol definition defines the syntax, semantics, and synchronization of communication; the specified behavior is typically independent of how it is to be implemented. A protocol can therefore be implemented as hardware or software or both.

The Internet Protocol is used in concert with other protocols within the Internet Protocol Suite. Prominent members of which include:

Transmission Control Protocol (TCP)

User Datagram Protocol (UDP)

Internet Control Message Protocol (ICMP)

Hypertext Transfer Protocol (HTTP)

Post Office Protocol (POP3)

File Transfer Protocol (FTP)

Internet Message Access Protocol (IMAP)

Other instances of high level interaction protocols are:

IIOP

RMI

DCOM