Nitesh Kumar (MADE EASY)
BAN USERI am hard worker....and thinks the things logically....
no this is not a interview question.....but asked in my college.....
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so if you know can you please xplain me the ans...
its a nice question man
the ans is simple........if n numbers are given then.......and will be
(2nCn)/(n+1)............hope it will help you...
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above C is for combination
Starting from application layer....your message will be kept in a packet containing header with port address (Source Port no, Destination Port no),in Transport layer then that packet will be transferred to network layer in with another header is added with IP addresses (Source IP, destination IP), and then this packet is transferred to data link layer....in which a header and a tailor is added..header is containing the Souce MAC addess and the MAC address of the next router to which it is to be forwarded.....(The MAC address of the next router is obtained by ARP...)....and then at the router we are having three layers....Data Link layer, Network layer and then transport layer....at the routers...the Destination MAC address is canged...which is of next...router fund by ARP.......and at last when the Destinations is reached,,,,,the data will be passed though the 5 layes from bottom to top...removing the headers one by one....and the will be shown according to the port no specified.......like 80 is the port no for http......
- Nitesh Kumar (MADE EASY) July 21, 2012When you send a ping request to another host then.....it just like a sending an echo packet to the another host....if that host connected with you in the internet then..that will reply you....that the connection is there......and technically speaking when you ping with an IP address...then that IP address will reply you.....
- Nitesh Kumar (MADE EASY) July 21, 2012
when you type the address in the url....i contacts ths DNS server for the IP address....using UDP....and then when the IP address is returned by the DNS server....then the IP packet is prepared with the destination addess as the IP that you DNS returned........
- Nitesh Kumar (MADE EASY) October 06, 2012.
Hope this is helpful.....