IP Addressing and CIDR Quiz

What is the primary difference between Class A, B, and C IP address ranges in classful addressing?

• The number of octets used to identify the network and host

• The type of routing protocols used

• The IP version they are compatible with

• The type of transmission protocol they support

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

• 255.255.255.0

• 255.255.0.0

• 255.0.0.0

• 255.255.255.255

Which of the following IP addresses belongs to Class A?

• 192.168.10.1

• 128.10.1.1

• 10.15.250.1

• 172.16.5.5

How many host addresses are available per network in a Class C address space?

• 254

• 65534

• 16,777,214

• 65,534

Which of the following statements is TRUE about Class D IP addresses?

• They are reserved for future use

• They are used for multicasting

• They can have 16,777,214 host addresses

• They are used for private networks only

What is the range of the first octet in a Class C address?

• 1 to 126

• 128 to 191

• 192 to 223

• 224 to 239

What is the primary disadvantage of classful addressing?

• Lack of support for private networks

• Inefficient use of IP address space due to fixed classes

• Limited to only IPv4 addressing

• Requires complex subnetting techniques

Which of the following ranges represents Class B IP addresses?

• 128.0.0.0 to 191.255.255.255

• 192.0.0.0 to 223.255.255.255

• 1.0.0.0 to 126.255.255.255

• 224.0.0.0 to 239.255.255.255

In Classful addressing, how many networks can be assigned in a Class A network?

• 16,777,214

• 65,534

• 126

• 128

Which IP address is considered as the network identifier for a Class C network with a default subnet mask?

• The IP address where all host bits are 1

• The IP address where all network bits are 0

• The first IP address where all host bits are 0

• The last IP address where all host bits are 1