Networking - Subnetting - Discussion
Discussion Forum : Subnetting - Subnetting (Q.No. 19)
19.
Using the illustration from the previous question, what would be the IP address of S0 if you were using the first subnet? The network ID is 192.168.10.0/28 and you need to use the last available IP address in the range. Again, the zero subnet should not be considered valid for this question.
Answer: Option
Explanation:
A /28 is a 255.255.255.240 mask. The first subnet is 16 (remember that the question stated not to use subnet zero) and the next subnet is 32, so our broadcast address is 31. This makes our host range 17-30. 30 is the last valid host.
Discussion:
11 comments Page 1 of 2.
Saravanan said:
4 years ago
The answer is C because,
1) The Zero Subnet shouldn't be considered. What is that?
Basically its the first subnet obtained when subnetting the network address (192.168.10.0) OR also known as subnetted ip that has 0's in the subnet portion of the address.
2) We know that the ip address increment's in 16. So consider 192.168.10.16 as the first viable subnet instead of 192.168.10.0. The following subnet is 192.168.10.30. So from here we can calculate the last host for subnet 192.168.10.16 by minus 2 from 192.168.10.32 cause 192.168.10.30 is broadcast and below then that is the last host of 192.168.10.16.
1) The Zero Subnet shouldn't be considered. What is that?
Basically its the first subnet obtained when subnetting the network address (192.168.10.0) OR also known as subnetted ip that has 0's in the subnet portion of the address.
2) We know that the ip address increment's in 16. So consider 192.168.10.16 as the first viable subnet instead of 192.168.10.0. The following subnet is 192.168.10.30. So from here we can calculate the last host for subnet 192.168.10.16 by minus 2 from 192.168.10.32 cause 192.168.10.30 is broadcast and below then that is the last host of 192.168.10.16.
Lexi said:
4 years ago
B isn't correct because you have to use the first subnet and not the third subnet which would be 48-64 (usable 49-62). Zero subnet is not to be used in this question; which is irrelevant information as there are no options that include valid host addresses.
Luloth said:
4 years ago
@Sambhaji.
If a network address is subnetted, the first subnet obtained after subnetting the network address is called subnet zero.
If a network address is subnetted, the first subnet obtained after subnetting the network address is called subnet zero.
Khurram said:
6 years ago
Why B is incorrect?
10.62 is the last usable host in the subnet 10.48.
10.62 is the last usable host in the subnet 10.48.
Krishna said:
6 years ago
192.168.10.0,16,32.
C is the correct answer.
C is the correct answer.
Viren Narang said:
7 years ago
I think Option B is also correct.
Sambhaji said:
8 years ago
What is the concept of subnet zero?
Dibyaranjan Moharana said:
9 years ago
Option A) 192.168.10.24 is also the correct answer.
Mehedi hasan said:
9 years ago
The question was last available IP address in the IP range.
So I think that will be, 192.168.10.62 because that is last valid IP address for this scenario and the first one is 192.168.10.30.
So I think that will be, 192.168.10.62 because that is last valid IP address for this scenario and the first one is 192.168.10.30.
Patricio said:
9 years ago
What about option A, this value is between 17-30?
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