Question

1. What is Classless Inter-Domain Routing (CIDR) in IP address design?

2. What is Variable-Length Subnet Masking (VLSM) in IP address design?

3. You are given IP address block: 192.168.10.0/26. Identify Network and Host addresses.

4. What is the difference between IP addresses 172.16.10.22 / 255.255.255.224, and 172.16.10.22/224?

5. You are given an IP address 172.16.10.22 / 255.255.255.224.
   1. What is the network portion of 172.16.10.22 / 255.255.255.224 ?

  

2. How many valid Host IP addresses are available?
3. What’s the valid host IP address range of 172.16.10.22 / 255.255.255.224 ?
   
   1. What is the valid start or the first address of the subnet
      
   2. What is the valid last IP address of the subnet
      
   3. What is broadcast address for all Hosts?
      

Answer 1

What is Classless Inter-Domain Routing (CIDR) in IP address design?
Classless inter-domain routing (CIDR) is a set of Internet protocol (IP) standards that is used to create unique identifiers for networks and individual devices. The IP addresses allow particular information packets to be sent to specific computers. Shortly after the introduction of CIDR, technicians found it difficult to track and label IP addresses, so a notation system was developed to make the process more efficient and standardized. That system is known as CIDR notation.

What is Variable-Length Subnet Masking (VLSM) in IP address design?
A Variable Length Subnet Mask (VLSM) is a numerical masking sequence, or IP address subset, based on overall network requirements. A VLSM allows a network administrator to use long masks for networks with few hosts and short masks for networks with multiple hosts. A VLSM is used with a VLSM router and must have routing protocol support.

You are given IP address block: 192.168.10.0/26. Identify Network and Host addresses.
Network : 192.168.10.0
Host : 192.168.10.1 to 192.168.10.62

What is the difference between IP addresses 172.16.10.22 / 255.255.255.224, and 172.16.10.22/224?
host address is 172.16.10.22
subnet mask is 255.255.255.224
/224 means all three 255.255.255 are same to no need to write it

You are given an IP address 172.16.10.22 / 255.255.255.224.

What is the network portion of 172.16.10.22 / 255.255.255.224 ?
172.16.10
255.255.255

How many valid Host IP addresses are available?
30

What’s the valid host IP address range of 172.16.10.22 / 255.255.255.224 ?
172.16.10.1 to 172.16.10.30

What is the valid start or the first address of the subnet
172.16.10.1

What is the valid last IP address of the subnet
172.16.10.30

What is broadcast address for all Hosts?
172.16.10.31

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