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18 Questions

What is the main purpose of dividing IP addresses into classes?

To distinguish the network and host portions of the IP address

What is the difference between Classful IP addressing and Classless IP addressing?

Classful addressing depends on the network and host portions, while Classless addressing does not

What is the binary representation of the IP address 10.32.10.1?

00001010.00100000.00001001.00000001

All of the above

In the binary representation of an IP address, how can you determine the network portion and the host portion?

The network portion and host portion are determined by the subnet mask

What is the purpose of using a subnet mask with an IP address?

To determine the network portion and host portion of the IP address

What is the purpose of a subnet mask?

To determine the network and host portions of an IP address

32 bits

255.255.255.0

How can you express a subnet mask in binary form?

Replace the network portion with 1s and the host portion with 0s

What is the purpose of subnetting?

To increase the number of available IP addresses

If a network has a subnet mask of 255.255.255.192, how many subnets and hosts are available?

8 subnets, 14 hosts per subnet

To determine the network portion and host portion of an IP address

125

If a network has the IP address 192.168.10.0/24, how many subnets and hosts are available?

1 subnet, 254 hosts

What is the binary representation of the subnet mask 255.255.255.0?

11111111.11111111.11111111.00000000

65536

In a subnet with the IP address 192.168.20.64/26, what is the range of valid host IP addresses?

192.168.20.65 - 192.168.20.126

Study Notes

• IP addresses are divided into classes to distinguish between the network and host portions.

• An IP address in binary is divided into network and host portions, e.g., 00001010. 00100000. 00001001. 00000001.
• The same IP address in binary dotted decimal is 10. 32. 10. 1.

• IP addresses define end devices, are used for end-to-end communication, and are 32-bit addresses divided into network and host portions.
• MAC addresses define local devices, are used for node-to-node communication, and are 48-bit addresses divided into OUI and hardware serial number portions.

Subnetting

• The subnet mask determines the network and host fields of an IP address.
• A subnet mask is 32 bits long and has 4 octets, just like an IP address.
• Subnet masks can be assigned manually or automatically.
• Default subnet masks for Class A, B, and C addresses are: [no specific values provided]

• NAT is a technology that provides mapping between private and universal addresses.
• NAT can be used by hosts that do not connect to the Internet.

Test your knowledge on Network Address Translation (NAT), a technology that provides mapping between private and universal addresses. This quiz covers the concepts and applications of NAT in computer networks.

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