Given a Class B network and a number of subnets required,complete the table to identify the number
Question:
Given a Class B network and a number of subnets required,complete the table to identify the number of bits to borrow fromthe host field for the subnet field and the maximum number of hostaddresses available per subnet.
Number of Subnets Required | Number of Bits to Borrow for theSubnet Field | Maximum Number of Hosts per Subnet | Subnet Mask in Binary and DecimalRepresentations |
5 | 3 23 =8 | Class B has 16 host bits bydefinition. If 3 bits are borrowed then there are 13 host bits
213 -2 = 8191 – 2 =8189 | 1111111.11111111.11100000.00000000 255.255.224.0
And in CIDR /19 |
8 | 3 |
|
|
35 | 6 |
|
|
200 | 8 |
|
|
400 | 9 |
|
|
Assume that you have been assigned 192.168.111.129/28.
- How many bits are borrowed to create the subnet field?________________
- What is the maximum number of subnets that can be created withthis number of bits? ________________
- How many bits can be used to create the host space?________________
- What is the maximum number of host addresses available persubnet? ________________
- What is the subnet mask, in binary and decimal format?________________
- Complete the following table and calculate the subnet that thisaddress is on, and define all the other subnets (the range of hostaddresses on the subnet and the directed broadcast address on thesubnet).
Subnet Number | Subnet Address | Range of Host Addresses | Direct Broadcast Address |
0 | |||
1 | |||
2 | |||
3 | |||
4 | |||
5 | |||
6 | |||
7 | |||
… | |||
Last subnet number |
Answer the following:
- What subnet is 192.168.111.129 on?
- A junior network administrator is trying to assign192.168.111.127 as a static IP address for a computer on thenetwork but is getting an error message. Why?
- Can 192.168.111.39 be assigned as an IP address?
Computer Networking A Top-Down Approach
ISBN: 978-0133594140
7th edition
Authors: James Kurose, Keith Ross