Recursive DNS

On internet every website or server have IP address, when we visit a website our system resolve domain name from DNS server using DNS query. It user service of Recursive DNS. Their are 2 types of DNS query:- 1.) Intrative request:- With these requests the DNS server will...
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VTP Configuration – VLAN Server

In My last post I explained how to configure VLAN in a switch, It is really easy task to configure it. But problem arise when you have 40 or 50 switches and also 20 or 30 VLANs then it become really problematic to configure all these and what...
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Virtual Local Area Network – VLAN

A Virtual Local Area Network – VLAN is a logical group of workstations, servers and network devices that appear to be on the same LAN despite their geographical distribution. A VLAN allows a network of computers and users to communicate in a simulated environment as if they exist...
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OSI reference model

OSI (Open Systems Interconnection) is reference model for how applications can communicate over a network. A reference model is a conceptual framework for understanding relationships. The purpose of the OSI reference model is to guide vendors and developers so the digital communication products and software programs they create...
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