Ethical hacking: Basic Concept of networks

Dosto ye mera new blog hai is par main aapko Networking , CCNA or CCNP ki puri jankari dunga sabse pahle main aapko basic cencepts bata raha hu networking ke networking ke bare mai jana kisi bhi hacker ke liye bahut jaruri hai. sabse pahle hum jante hai ki network kya hai.

network kya hai ?

do ya do se jada computers phones jab apas mai communicate karte hai use network kaha jata hai jaha par hum file ko share kar sakte hai , data share kar sakte hai, iske fayde bhi hai jaise maan lijiye ek network mai 4 computers hai or one printer hai or sabhi computers ek hi printer use kar sakte hai.

Two types of network configuration

Client-Server Model ⇒ Client-Server Model main ek computer ko server bna diya jata hai or baki computers ko client machine bnaya jata hai or bch mai server se client ke communication ke liye hub ya switch lgaya jata hai jaise maan lijiye network mai 5 computers hai or ek computer as a server act kar rha hai or baki 4 client computers hai or sabhi 5 computers switch ke sath connect hai or kisi bhi client computer ko jab koi file chahiye hogi to vo direct server ke ip address dal kar file nikal lega .

Peer-to-Peer Model ⇒ Peer-to-Peer Model mai sabhi computers as a server bhi act karte hai or as a client bhi act karte hai jaise kisi network mai 5 computers hai or ek client computer ko koi file chahiye jo kisi or computer par hai to vo client computer dusre computer ko access karke file le sakta hai.

Types of computer Networks

Local Area network (LAN)⇒ Local Area Network ek chota sa network hota hai jo humare computer centers, offices mai use hota hai jaise aapne dekha hoga kisi computer center par bahut sare computers hote hai or sabhi ek dusre se communicate karte hai to ise Local Area Network kaha jayga.

Metropolitan Area network (MAN)⇒ Metropolitan Area network yeh network do buildings mai hota hai jaise ek university mai bahut sari buildings hoti hai or ek building ka computer kisi dusre building ke computer se communicate karta hai to ise Metropolitan Area network kaha jayga.

Wide Area network (WAN)⇒ Wide Area network do cities mai hota hai aap ise all over the world keh sakte hai jaise Facebook par aap kisi se chat karte hai, telephone par kisi se bat karte hai to ise Wide Area Network kaha jayga.