Podcast
Questions and Answers
What is your mask if you have a Class B network and need 29 subnets?
What is your mask if you have a Class B network and need 29 subnets?
What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255.255.255.224 subnet mask?
What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255.255.255.224 subnet mask?
How many bits must you borrow from the host field to provide the correct subnet mask for a network that needs 29 subnets?
How many bits must you borrow from the host field to provide the correct subnet mask for a network that needs 29 subnets?
What is the subnetwork address for a host with the IP address 200.10.5.68/28?
What is the subnetwork address for a host with the IP address 200.10.5.68/28?
Signup and view all the answers
The network address of 172.16.0.0/19 provides how many subnets and hosts?
The network address of 172.16.0.0/19 provides how many subnets and hosts?
Signup and view all the answers
Which two statements describe the IP address 10.16.3.65/23? (Choose two.)
Which two statements describe the IP address 10.16.3.65/23? (Choose two.)
Signup and view all the answers
If a host on a network has the address 172.16.45.14/30, what is the subnetwork this host belongs to?
If a host on a network has the address 172.16.45.14/30, what is the subnetwork this host belongs to?
Signup and view all the answers
Which mask should you use on point-to-point links in order to reduce the waste of IP addresses?
Which mask should you use on point-to-point links in order to reduce the waste of IP addresses?
Signup and view all the answers
What is the subnetwork number of a host with an IP address of 172.16.66.0/21?
What is the subnetwork number of a host with an IP address of 172.16.66.0/21?
Signup and view all the answers
You have an interface on a router with the IP address of 192.168.192.10/29. Including the router interface, how many hosts can have IP addresses on the LAN attached to the router interface?
You have an interface on a router with the IP address of 192.168.192.10/29. Including the router interface, how many hosts can have IP addresses on the LAN attached to the router interface?
Signup and view all the answers
Study Notes
Subnetting Basics
- A Class B default mask is 255.255.0.0. Adjusting masks can help create more subnets.
- A 255.255.255.240 mask enables 16 subnets (each with 14 hosts), but 5 bits yield 32 subnets with a /21 mask.
- The maximum number of IPs with a 255.255.255.224 mask is 30 hosts due to its /27 subnetting.
Host and Subnet Calculations
- For a network needing 29 subnets, borrowing 5 bits from the host field allows for a /21 subnet mask and maximizes available hosts.
- The subnetwork address for an IP like 200.10.5.68/28 is calculated based on the block size in the fourth octet, resulting in 200.10.5.64.
CIDR Notation and Subnet Characteristics
- A /19 CIDR gives a Class B address of 255.255.224.0, leading to 8 subnets with 8,190 hosts each due to the 3 subnet bits and 13 host bits.
- The IP address 10.16.3.65 with a /23 mask has a subnet address of 10.16.3.0 and valid host range from 10.16.2.1 to 10.16.3.254.
Network Identifiers and Block Sizes
- A /30 subnet mask, commonly used for point-to-point links, allows only 2 hosts, ideal for reducing IP waste.
- The subnetwork for an IP of 172.16.45.14/30 is determined to be 172.16.45.12 due to the 252 mask specifying a block size of 4.
Router Interfaces and IP Assignments
- With an IP of 192.168.192.10/29, only 6 hosts (including the router) can be assigned addresses in that LAN.
- For the server configuration on 192.168.19.24/29, options include selecting a host address that respects subnetting rules.
Key Exam Preparedness
- Know how to derive subnet addresses, host ranges, and broadcast addresses using CIDR notation and subnet masks.
- Familiarize with the key implications of subnetting on network design, especially in terms of efficiency and resource management.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
