netwyman

The   TCP/IP   Network Interface layer formats IP datagrams at the Network layer into packets that specific network technologies can understand and transmit. A network interface is the network-specific software that communicates with the network-specific device driver and the IP layer in order to provide the IP layer with a consistent interface to all network adapters that might be present. The IP layer selects the appropriate network interface based on the destination address of the packet to be transmitted. Each network interface has a network address. The Network Interface layer is responsible for adding or removing any link layer protocol header required to deliver a message to its destination. The   network adapter   device driver controls the network adapter card. Although not required, a network interface is usually associated with a network adapter. For instance, the loopback interface has no network adapter associated with it. A machine must h...

URL  stands for Uniform Resource Locator. URL is the address of the website which you can find in the address bar of your web browser. It is a reference to a resource on the internet, be it images, hypertext pages, audio/video files, etc. Example : http://shrigujaratpustakalay.in/ What is DNS : DNS is short for Domain Name System. Like a phonebook, DNS maintains and maps the name of the website, i.e. URL, and particular IP address it links to. Every URL on the internet has a unique IP address which is of the computer which hosts the server of the website requested. Brief explanation about for what happens when we enter a URL : Browser checks cache for DNS entry to find the corresponding   IP address   of website. It looks for following cache. If not found in one, then continues checking to the next until found. Browser Cache Operating Systems Cache Router Cache ISP Cache If not found in cache, ISP’s (I...