How many class A, B and C networks Ids can exist?
| A. | 2,113,658 |
| B. | 16,382 |
| C. | 126 |
| D. | 128 |
Answer : A Explanation : chandan kumar said: (7:33am on Saturday 6th July 2013)
IN CLASS 1 BLOCK 0.0.0.0 TO 0.255.255.2552 BLOCK 1.0.0.0 TO 1.255.255.255LAS BLOCK 127.0.0.0 TO 127.255.255.255NOW SEE IN BINARY REPRESENTATION128 64 32 16 8 4 2 1IN 1 BLOCK 1ST BYTE 0 FOR SELECT MAXMIM 127 WE NEED 7 BITHENCE IN CLASS A NO OF BLOCK=2POWER(7)=128IN CLASS B 1 BYTE 011 BLOCK 128.0.0.0 TO 128.0.255.255LAST BLOCK 191.255.0.0 TO 191 .255.255.255HENCE NO OF BLOCK IN CLASS B 2 POWER(6 8)=16384 IN CLASS C 1ST BLOCK 192.0.0.0 TO 192.0.0.2552ND BLOCK 192.1.0.0 TO 192.1.0.255LAST BLOCK 223 .255.255.0 TO 223IN BINARY REPRESENTATION 001NO OF BLOCK IN CLASS C=2 POWER(5 16)=2097152HENCE TOTAL NUMBER OF BLOCK IN CLASS A,B,C128 16384 2097152=2113664
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Option: A Explanation : Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. |
