Networking - Subnetting - Discussion
Discussion Forum : Subnetting - Subnetting (Q.No. 5)
5.
You need to subnet a network that has 5 subnets, each with at least 16 hosts. Which classful subnet mask would you use?
Answer: Option
Explanation:
You need 5 subnets, each with at least 16 hosts. The mask 255.255.255.240 provides 16 subnets with 14 hosts-this will not work. The mask 255.255.255.224 provides 8 subnets, each with 30 hosts. This is the best answer.
Discussion:
26 comments Page 2 of 3.
Roopa said:
1 decade ago
Host bits required = 16.
By formula, 2^h-2 = 16.
=> 2^h = 18.
Best suited value here for h is 5.
By this sub net we get is 1111 1111.1111 1111.1111 1111.1110 0000.
255.255.255.224.
By formula, 2^h-2 = 16.
=> 2^h = 18.
Best suited value here for h is 5.
By this sub net we get is 1111 1111.1111 1111.1111 1111.1110 0000.
255.255.255.224.
Tabe rudith ayuk ashu said:
1 decade ago
Is there a possibility of using only the subnets and host values given in the question to get the subnet mask rather than testing the answers one after the other to get a match?
Vinay said:
1 decade ago
Network bits = 3.
Host bits = 5.
Formula:
To find number of subnet = 2^n(n = no>of borrowed network bits).
To find no.of host = 2^h-2(h = no>of borrowed host bits).
Host bits = 5.
Formula:
To find number of subnet = 2^n(n = no>of borrowed network bits).
To find no.of host = 2^h-2(h = no>of borrowed host bits).
S .HEMANATHAN said:
9 years ago
class c
192.168.2.0
Subnets = 5.
Hosts = 16.
128 64 32 16 8 4 2 1
1 1 1 0 0 0 0 0.
and
2^5 - 2=30 host
2^3 = 8 subnets.
So,
255.255.255.224.
192.168.2.0
Subnets = 5.
Hosts = 16.
128 64 32 16 8 4 2 1
1 1 1 0 0 0 0 0.
and
2^5 - 2=30 host
2^3 = 8 subnets.
So,
255.255.255.224.
(4)
Manikandan said:
8 years ago
I need formula 2^16=32 value of network.
So I taken 128.64.32. value mention after another 0.0.0.0.0 calculate 128+64+32=224.
Ans 255.255.255.224.
So I taken 128.64.32. value mention after another 0.0.0.0.0 calculate 128+64+32=224.
Ans 255.255.255.224.
Siri said:
9 years ago
Prove if a host on a network has the address 172.16.45.14/30, the broadcast address of the subnet is 172.16.45.15.
(1)
Mohamed said:
10 years ago
@Vinay and @Hagos explained well Thanks for your valuable inputs, I keep expect from your side.
Pollob basak said:
4 years ago
4 subnets, each with at least 20 hosts. Which subnet mask? Please explain about it.
Jaffar shaikh said:
1 decade ago
How 255.255.255.224 provides 8 subnets ,each with 30 hosts?
please tell me answer.
please tell me answer.
JaganPJ said:
8 years ago
@Roopa
Why the best value for h is 5?
Isn't it would be 9 because h=18/9.
Why the best value for h is 5?
Isn't it would be 9 because h=18/9.
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