in Unknown Category edited by
403 views
0 votes
0 votes

You are working with a network that is $172.16.0.0$ and would like to support $600$ hosts per subnet. What subnet mask should you use?

  1. $255.255.192.0$
  2. $255.255.224.0$
  3. $255.255.252.0$
  4. None of the options
in Unknown Category edited by
by
403 views

1 comment

edited by
Given IPA $\in C_B$ in which $16$ bits is NID, $16$ bit is HID. out of $16$ bits of HID $10$ bits is used as SID as $\log_2600=10$.

to make a subnet mask all NID and SID bits are set to $1$, and HID bits are set to $0$.

So subnet mask=$11111111.\ 11111111.\ 11111100.\ 00000000=255.255.252.0$
–1
–1

1 Answer

2 votes
2 votes
since it is class B address we have 16 bits for net  & 16 bits for host id

to accommodate 600 host per subnet we need 10 bits (2^10= 1024 as 2^9 =512 will not hold in this scenario)

 

therefore we need to make rightmost 10 bits as 0 for mask and rest 22 will be as 1 which is nothing but

11111111.11111111.11111100.00000000

 

255.255.252.0

 

therefore option C

Related questions