IPv4 Flashcards
1
Q
Formula for # of created subnets
A
2^s where s is number of “borrowed” bits
2
Q
Formula for # of assignable(!) IPs
A
2^h -2 where h is the number of host bits
3
Q
How many subnets /30 CIDR
A
64
4
Q
How many IPs /30 CIDR
A
4
5
Q
How many subnets /29 CIDR
A
32
6
Q
How many IPs /29 CIDR
A
8
7
Q
How many subnets /28 CIDR
A
16
8
Q
How many IPs /28 CIDR
A
16
9
Q
How many subnets /27 CIDR
A
8
10
Q
How many IPs /27 CIDR
A
32
11
Q
How many subnets /26 CIDR
A
4
12
Q
How many IPs /26 CIDR
A
64
13
Q
How many subnets /25 CIDR
A
2
14
Q
How many IPs /25 CIDR
A
128
