Subnetting
Howard Community College
PRACTICE SUBNETTING Instructor Greg Watlington
Name: ___________________________ Sunday, October 18, 2020
SHOW ALL WORK, To receive the practice points this sheet must be completed and uploaded
SEE SUBNETTING LECTURE NOTES FOR ADDITIONAL HELP
Step 1: What is the class the given IPA?
(Look at the decimal value of Octet 1 and compare it to the 5 IPA classes)
Class Range
A 0-127
B 128-191
C 192-223
D 224-239
E 240-255
Step 2: Identify the Classful Subnet Default Mask of the given IPA
A=255.0.0.0 B=255.255.0.0 C=255.255.255.0
Step 3: Compare the default mask to the give mask to determine if host bits are On/Borrowed/Masked.
Complete the following sub-netting pages
IPA and Mask | IPA Host Decimal Value(s) | Mask Host Decimal Value(s) | | Convert from | | Convert ANDING from Bin to Dec |
192.168.98.120 | | ============= | => | | | |
/29 | ===========> |
| => | | | |
| Subnet of IPA in Binary (ANDING) | => | | ==> |
|
Answer the questions based on the above Internet Protocol Address (IPA) and MASK
1. How many Subnet will be created from the borrowed Host bits (2 to the power of borrowed bits) ?
2. What is the Total Host Address Per Subnet (2 to the power of un-borrowed bits )?
3. How many Valid/Available Host IDs Per Subnet (2 to the power of un-borrowed bits - 2)?
4. What is the subnet block size/increment, it is the value of the last host bit borrowed (default 255)?
5. Build the network IPA scope, show the first 8 and Last subnets with full IPA ranges?
STEP 1 STEP 2 STEP 4 STEP 3
Subnet Name | Subnet IPA | First Available/Valid Device IPA (+1) | Last Available/Valid Device IPA (-1) | Broadcast IDs (-1 from next subnet) |
Sub01 | | | | |
Sub02 | | | | |
Sub03 | | | | |
Sub04 | | | | |
Sub05 | | | | |
Sub06 | | | | |
Sub07 | | | | |
Sub08 | | | | |
| | | | |
Last Sub | | | | |
IPA and Mask | IPA Host Decimal Value(s) | Mask Host Decimal Value(s) | | Convert from | | Convert ANDING from Bin to Dec |
172.24.65.193 | | ============= | => | | | |
/25 | ===========> |
| => | | | |
| Subnet of IPA in Binary (ANDING) | => | | ==> |
|
Answer the questions based on the above Internet Protocol Address (IPA) and MASK
1. How many Subnet will be created from the borrowed Host bits (2 to the power of borrowed bits) ?
2. What is the Total Host Address Per Subnet (2 to the power of un-borrowed bits )?
3. How many Valid/Available Host IDs Per Subnet (2 to the power of un-borrowed bits - 2)?
4. What is the subnet block size/increment, it is the value of the last host bit borrowed (default 255)?
5. Build the network IPA scope, show the first 8 and Last subnets with full IPA ranges?
STEP 1 STEP 2 STEP 4 STEP 3
Subnet Name | Subnet IPA | First Available/Valid Device IPA (+1) | Last Available/Valid Device IPA (-1) | Broadcast IDs (-1 from next subnet) |
Sub01 | | | | |
Sub02 | | | | |
Sub03 | | | | |
Sub04 | | | | |
Sub05 | | | | |
Sub06 | | | | |
Sub07 | | | | |
Sub08 | | | | |
| | | | |
Last Sub | | | | |
IPA and Mask | IPA Host Decimal Value(s) | Mask Host Decimal Value(s) | | Convert from | | Convert ANDING from Bin to Dec |
10.221.97.129 | | ============= | => | | | |
/18 | ===========> |
| => | | | |
| Subnet of IPA in Binary (ANDING) | => | | ==> |
|
Answer the questions based on the above Internet Protocol Address (IPA) and MASK
1. How many Subnet will be created from the borrowed Host bits (2 to the power of borrowed bits) ?
2. What is the Total Host Address Per Subnet (2 to the power of un-borrowed bits )?
3. How many Valid/Available Host IDs Per Subnet (2 to the power of un-borrowed bits - 2)?
4. What is the subnet block size/increment, it is the value of the last host bit borrowed (default 255)?
5. Build the network IPA scope, show the first 8 and Last subnets with full IPA ranges?
STEP 1 STEP 2 STEP 4 STEP 3
Subnet Name | Subnet IPA | First Available/Valid Device IPA (+1) | Last Available/Valid Device IPA (-1) | Broadcast IDs (-1 from next subnet) |
Sub01 | | | | |
Sub02 | | | | |
Sub03 | | | | |
Sub04 | | | | |
Sub05 | | | | |
Sub06 | | | | |
Sub07 | | | | |
Sub08 | | | | |
| | | | |
Last Sub | | | | |
IPA and Mask | IPA Host Decimal Value(s) | Mask Host Decimal Value(s) | | Convert from | | Convert ANDING from Bin to Dec |
172.30.100.249 | | ============= | => | | | |
/27 | ===========> |
| => | | | |
| Subnet of IPA in Binary (ANDING) | => | | ==> |
|
Answer the questions based on the above Internet Protocol Address (IPA) and MASK
1. How many Subnet will be created from the borrowed Host bits (2 to the power of borrowed bits) ?
2. What is the Total Host Address Per Subnet (2 to the power of un-borrowed bits )?
3. How many Valid/Available Host IDs Per Subnet (2 to the power of un-borrowed bits - 2)?
4. What is the subnet block size/increment, it is the value of the last host bit borrowed (default 255)?
5. Build the network IPA scope, show the first 8 and Last subnets with full IPA ranges?
STEP 1 STEP 2 STEP 4 STEP 3
Subnet Name | Subnet IPA | First Available/Valid Device IPA (+1) | Last Available/Valid Device IPA (-1) | Broadcast IDs (-1 from next subnet) |
Sub01 | | | | |
Sub02 | | | | |
Sub03 | | | | |
Sub04 | | | | |
Sub05 | | | | |
Sub06 | | | | |
Sub07 | | | | |
Sub08 | | | | |
| | | | |
Last Sub | | | | |
10 Point BONUS BONUS BONUS!!
IPA and Mask | IPA Host Decimal Value(s) | Mask Host Decimal Value(s) | | Convert from | | Convert ANDING from Bin to Dec |
10.81.226.66 | | ============= | => | | | |
/25 | ===========> |
| => | | | |
| Subnet of IPA in Binary (ANDING) | => | | ==> |
|
Answer the questions based on the above Internet Protocol Address (IPA) and MASK
1. How many Subnet will be created from the borrowed Host bits (2 to the power of borrowed bits) ?
2. What is the Total Host Address Per Subnet (2 to the power of un-borrowed bits )?
3. How many Valid/Available Host IDs Per Subnet (2 to the power of un-borrowed bits - 2)?
4. What is the subnet block size/increment, it is the value of the last host bit borrowed (default 255)?
5. Build the network IPA scope, show the first 8 and Last subnets with full IPA ranges?
STEP 1 STEP 2 STEP 4 STEP 3
Subnet Name | Subnet IPA | First Available/Valid Device IPA (+1) | Last Available/Valid Device IPA (-1) | Broadcast IDs (-1 from next subnet) |
Sub01 | | | | |
Sub02 | | | | |
Sub03 | | | | |
Sub04 | | | | |
Sub05 | | | | |
Sub06 | | | | |
Sub07 | | | | |
Sub08 | | | | |
| | | | |
Last Sub | | | | |