03-26-2009, 03:48 PM
Ok these two drag and drop subnet questions both puzzle me for many reasons
1/ the questions ask for you to use subnet zero and to conserve host addresses for future use but both questions miss 4 host addresses when
allocating addresses to the serial interfaces n418 issues 192.168.91.197 to the serial link but the next usable host address is 192.168.91.193 so there is 4 missing hosts here and same thing occurs on question n419 where hosts 80-84 are not used
2/ when allocating hosts you should always issue your highest number of hosts to lowest so why does n419 allocate the 78 hosts their subnet last?
3/ going by the same principle of highest to lowest why does the serial link in n418 appear in the middle of the allocation?
4/ why is subnet zero not used in n418 if it is telling you it is in use?
this questions threw me off as they make no sense whatsoever and come with no explanation of how the answer was arrived at
please explain ???
1/ the questions ask for you to use subnet zero and to conserve host addresses for future use but both questions miss 4 host addresses when
allocating addresses to the serial interfaces n418 issues 192.168.91.197 to the serial link but the next usable host address is 192.168.91.193 so there is 4 missing hosts here and same thing occurs on question n419 where hosts 80-84 are not used
2/ when allocating hosts you should always issue your highest number of hosts to lowest so why does n419 allocate the 78 hosts their subnet last?
3/ going by the same principle of highest to lowest why does the serial link in n418 appear in the middle of the allocation?
4/ why is subnet zero not used in n418 if it is telling you it is in use?
this questions threw me off as they make no sense whatsoever and come with no explanation of how the answer was arrived at
please explain ???