2 votes 2 votes Which of the following statements are correct regarding subnet mask $255.255.240.0?$ i. Class A network subnet mask$: 4096$ subnets and $4096$ systems per subnetwork ii. Class B network subnet mask$: 16$ subnets and $4096$ systems per subnetwork iii. Class C network subnet mask$: 1$ subnet and $ 256$ systems per subnetwork All are correct i, ii i, iii ii, iii Computer Networks computer-networks subnetting virtual-gate-test-series + – Utsav09 asked Jan 31, 2018 • edited Apr 14, 2019 by Lakshman Bhaiya Utsav09 946 views answer comment Share Follow See all 6 Comments See all 6 6 Comments reply sourav. commented Jan 31, 2018 reply Follow Share $B?$ 0 votes 0 votes Shubhanshu commented Jan 31, 2018 reply Follow Share It should be 1) 4096 Subnets and 4094 system assignable IP, whereas 2 are not system assignable because 1 is ID and Other is broadcast address over the subnet. 2) 16 subnets and 4094 system assignable IP, whereas 2 are not system assignable because 1 is ID and Other is broadcast address over the subnet. 3) In class C above mask i.e. $255.255.240.0$ will act as a supernet mask. 0 votes 0 votes garimanand commented Oct 10, 2018 reply Follow Share how can it be 4096 subnet in class A here first 8 bits will be for the network id and last 11 bits will be for subnet id and from 11 bits we only able to form 2^11=2048 subnets correct me if m wrong here?? 0 votes 0 votes Shubhanshu commented Oct 10, 2018 reply Follow Share First 8 bit for network second octet 8 bits + third octet 4 bit = 12 bit. And with 12bits u have 4096 subnets. 0 votes 0 votes garimanand commented Oct 10, 2018 reply Follow Share oh sorry silly mistake i thought it is 224 instead of 240 well thank you 0 votes 0 votes sim1999 commented May 19, 2021 reply Follow Share Why are you taking only 12 bits why not 24? Please elaborate 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes I think ans is (A) Mohit Pandit answered Oct 12, 2018 Mohit Pandit comment Share Follow See all 3 Comments See all 3 3 Comments reply kd..... commented Oct 7, 2019 reply Follow Share B is the right answer 0 votes 0 votes akshay7797 commented Oct 7, 2019 reply Follow Share can't class C be considered as a single subnet? @kd..... 0 votes 0 votes kd..... commented Oct 7, 2019 reply Follow Share For class c subnet mask must be 255.255.255.x 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes None is correct . As the number of subnets exclude broadcast and 0000 wala host. If this convention is ignored then option “a” is correct rish1602 answered Sep 7, 2021 rish1602 comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes i think answer B is right iamnarend answered Sep 2, 2023 iamnarend comment Share Follow See all 0 reply Please log in or register to add a comment.