Gate Workbook

Question

IP = 201.15.16.19

Subnet mask = 255.255.255.224

Which of the following can be possible

subnet ID? (Multiple Select Question)

 

a) 201.15.16.96

b) 201.15.16.48

c) 201.15.16.64

d) 201.15.16.78

Answer 1

To find the subnet ID, you need to perform a bitwise AND operation between the IP address and the subnet mask. Here's how you can do it:

IP: 201.15.16.19 Subnet: 255.255.255.224 Result: 201.15.16.16

So, the correct subnet ID is 201.15.16.16.

None of the given options match the calculated subnet ID of 201.15.16.16. Therefore, based on the provided options, none of them are correct.

Comments

How the Bit-wise AND operation between 19 & 224 is resulting as 16?. It Should be 0, no?.

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any 3 bits can be selected from last octate..so answer can be a, b, c….

subnet mask=11111111.11111111.11111111.11100000

last octate any three bits can be taken for subnet id….and for option d we need 4 bits for representing 78...thats why its wrong

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here the last 5 bits will tell us the range so range can be 0-31 only is it right ? that's why we can say no option is matching here.