Evolution of Internet


Evolution of Networking
A network is a group of connected communicating devices such as computers and printers. An internet is two or more networks that can communicate with each other. The most notable internet is called Internet, a collaboration of more than hundreds of thousands of interconnected networks. This extraordinary system comes into existence in 1969.
In mid – 1960s, mainframe computers in research organizations were standalone(means not communicating) devices. Computers from different manufacturers were unable to communicate with one another. The Advanced Research Projects Agency (ARPA) in the Department of  Defense (DoD) was interested in finding a way to connect computers so that the researchers they funding could share their findings.
In 1967 , at an Association for Computing Machinery(ACM) meeting, ARPA presented its idea for ARPANET, a small network of connected computers. By 1969, ARPANET was a reality. Four nodes (Computers) were connected via the IMPs(Interface Message Processor) to form a network.

The Internet
Today, it is very rare to see a LAN, a MAN, or a LAN in isolation; they are connected to one another. When two or more networks are connected, they become an internetwork, or internet.
The internet has come a long way since 1960s. The internet is not a simple hierarchical structure. It is made up of many wide area networks joined by connecting devices and switching stations. It is difficult to give an accurate representation of the Internet because it is continuously changing- new networks are being added, existing networks are adding addresses, and networks of distinct companies are being removed.

Comments

Post a Comment

Popular posts from this blog

Program for calculating Simple Interest using the concept of Default Arguments

//Program for Interest calculation using the concept of default arguments #include<iostream.h> #include<conio.h> void main() { float amount, principal; int time; float interest(float p, int n, float r=0.15); cout<<"Program for simple interest calculation"<<endl; cout<<"Please enter principal amount:"; cin>>principal; cout<<"Please enter Time: "; cin>>time; amount=interest(principal, time); cout<<"\nThe amount is:"<<amount; cout<<"\nPress any key to continue..."; getch(); } float interest(float p, int n,float r) { return (p+((p*r*n)/100.0)); }
Read more

Computer MCQs Part-III

1. Computer uses the_________number system to store data and perform calculations. 1) Binary 2) octal 3) Decimal 4) Hexadecimal 5) None of these 2. .............. is the process of carrying out commands 1) Fetching 2) Storing 3) Decoding 4) Executing 5) None of these 3. In word, when you indent a paragraph, you .... 1) push the text in with respect to the margin 2) change the margins on the page 3) move the text up by one line 4) move the text down by one line 5) None of these 4. ASCII stands for ......... 1) American Special Computer for Information Interaction 2) American Standard Computer for Information Interchange 3) American Special Code for Information Interchange 4) American Special Computer for Information Interchange 5) American Standard Code for Information Interchange 5. Which of the following is used by the browser to connect to the location of the Internet resources ? 1) Linkers 2) Protocol 3) Cable 4) URL 5) None of these 6. ……….is the process of dividing the dis...
Read more

Program: Maximum number in three numbers in visual basic

Image
Program: Maximum number in three numbers User Interface   Coding: Function calMax(x, y, z As Variant) If x > y And x > z Then calMax = Str(x) ElseIf y > x And y > z Then calMax = Str(y) ElseIf z > x And z > y Then calMax = Str(z) End If End Function Private Sub Command1_Click() Dim a, b, c a = Val(Txt_Num1.Text) b = Val(Txt_Num2.Text) c = Val(Txt_Num3.Text) Lbl_Display.Caption = calMax(a, b, c) End Sub Private Sub Label5_Click() End Sub Private Sub Form_Load() End Sub
Read more