Problem 2:

IP address: 192.168.10.0 / 26 (given)

1. Custom Subnet Mask: 255.255.255.192
2. Bits Borrowed: _________________________________________
3. Number of subnets: _________________________________________
4. Magic number: _________________________________________
5. Number of valid hosts per subnet: 62
6. (Sub) network address of subnet 0: 192.168.10.0
7. First usable host address in subnet 0: 192.168.10.1
8. Last usable host address in subnet 0: 192.168.10.62
1. Broadcast address in subnet 0: 192.168.10.63
10. (Sub) Network address in subnet 1: _________________________________________
11. Last usable host address in subnet 2: _________________________________________

Subnet	Subnet address	1st Host address	Last Host address	Broadcast
0
1
2
3
Etc.

Problem 3:

IP address: 192.168.10.0 (given)

Subnet Mask: 255.255.255.240

1. Slash prefix: _________________________________________
2. Bits Borrowed: _________________________________________
3. Number of possible subnets: _________________________________________
4. Magic number: _________________________________________
5. Number of usable hosts per subnet: _________________________________________
6. (Sub) network address of subnet 0: _________________________________________
7. First usable host address in subnet 0: _________________________________________
8. Last usable host address in subnet 0: _________________________________________
1. Broadcast address in subnet 0: _________________________________________
10. (Sub) Network address in subnet 1: _________________________________________
11. Last usable host address in subnet 2: _________________________________________

Subnet	Subnet address	1st Host address	Last Host address	Broadcast
0
1
2
3
Etc.

Problem 4:

IP address: 192.168.10.0 (given)

Minimum number of subnets needed: 31

1. Slash prefix: _________________________________________
2. Subnet Mask: _________________________________________
3. Bits Borrowed: _________________________________________
4. Number of possible subnets: _________________________________________
5. Magic number: _________________________________________
6. Number of valid hosts per subnet: _________________________________________
7. (Sub) network address of subnet 0: _________________________________________
8. First usable host address in subnet 0: _________________________________________
1. Last usable host address in subnet 0: _________________________________________
10. Broadcast address in subnet 0: _________________________________________
11. (Sub) Network address in subnet 1: _________________________________________
50. Last usable host address in subnet 2: _________________________________________

Subnet	Subnet address	1st Host address	Last Host address	Broadcast
0
1
2
3
Etc.

Problem 5:

IP address: 192.10.10.0 (given) (Note that this address is slightly different than above)

Minimum number of hosts needed per subnet: 16

(Remember that the goal is to find a solution that will waste as few host addresses as possible but still satisfy the requirements.)

1. Slash prefix: _________________________________________
2. Subnet Mask: _________________________________________
3. Bits Borrowed: _________________________________________
4. Number of possible subnets: _________________________________________
5. Magic number: _________________________________________
6. Number of valid hosts per subnet: _________________________________________
7. (Sub) network address of subnet 0: _________________________________________
8. First usable host address in subnet 0: _________________________________________
1. Last usable host address in subnet 0: _________________________________________
10. Broadcast address in subnet 0: _________________________________________
11. (Sub) Network address in subnet 1: _________________________________________
50. Last usable host address in subnet 2: _________________________________________

Subnet	Subnet address	1st Host address	Last Host address	Broadcast
0
1
2
3
Etc.

Answer the following questions. Try to answer them without using tables to guide you:

1. How many usable hosts per sub-network will you have using a /20 address? ______
2. Given a Class B address, what is the magic number if you need to subnet using a /23 prefix? ______________________
3. In a Class B address, how many sub-networks can you have with a /18 prefix? _______________
4. How many total addresses per network can you have with a subnet mask of 255.255.224.0? (Note that total addresses include network and broadcast addresses.)___________