Subnetting and IP Addressing Concepts

The video tutorial covers the basics of IP subnetting, focusing on understanding subnet masks and IP address classes. It explains the historical context of classful subnetting and its relevance today. The tutorial details the five IP address classes (A to E) and their default subnet masks. It provides examples of determining the class of an IP address and demonstrates how to calculate network, broadcast, and host addresses. The video concludes with practical subnetting calculations, preparing viewers for more advanced classless subnetting techniques.

Why is understanding subnet masks important in IP subnetting?

• It is used for DNS resolution.

• It helps in determining the default gateway.

• It is crucial for routing protocols.

• It defines the network and host portions of an IP address.

Which IP address class is used for multicast?

• Class B

• Class A

• Class D

• Class C

What is the range of the first octet for Class B IP addresses?

• 1-127

• 128-191

• 192-223

• 224-239

How can you determine the class of an IP address?

• By using the subnet mask

• By looking at the first octet

• By converting the IP address to hexadecimal

• By checking the last octet

What is the default subnet mask for a Class A IP address?

• 255.0.0.0

• 255.255.0.0

• 255.255.255.255

• 255.255.255.0

What is the first usable host address in a subnet?

• One number lower than the broadcast address

• The same as the broadcast address

• One number higher than the network address

• The same as the network address

How do you calculate the broadcast address of a subnet?

• Set all host bits to zero

• Set the last octet to 0

• Set the first octet to 255

• Set all host bits to one

Given the IP address 10.74.222.11, what is the network address?

• 10.0.0.0

• 10.74.222.0

• 10.74.222.255

• 10.74.0.0

For the IP address 172.16.88.200, what is the broadcast address?

• 172.16.88.255

• 172.16.88.0

• 172.16.255.255

• 172.16.0.0

What is the last usable host address for the subnet of 192.168.4.77?

• 192.168.4.254

• 192.168.4.1

• 192.168.4.255

• 192.168.4.0