Determine IP Address Classes Quiz

1. Which class does 192.168.1.10 belong to?

Class A

Class B

Class C

None of the Above

The IP address 192.168.1.10 belongs to Class C. In Class C, the first octet ranges from 192 to 223, which indicates that it is a Class C network. Class C networks are commonly used for small to medium-sized businesses or organizations.

Explanation

The IP address 192.168.1.10 belongs to Class C. In Class C, the first octet ranges from 192 to 223, which indicates that it is a Class C network. Class C networks are commonly used for small to medium-sized businesses or organizations.

2. Which class does 172.16.1.20 belong to?

Class A

Class B

Class C

None of the Above

The IP address 172.16.1.20 belongs to Class B. In Class B, the first two octets of the IP address are used to identify the network, while the last two octets are used to identify the host. In this case, the first octet is 172, which falls within the range of 128-191, indicating a Class B network. Therefore, the given IP address belongs to Class B.

Explanation

The IP address 172.16.1.20 belongs to Class B. In Class B, the first two octets of the IP address are used to identify the network, while the last two octets are used to identify the host. In this case, the first octet is 172, which falls within the range of 128-191, indicating a Class B network. Therefore, the given IP address belongs to Class B.

3. Which class does 111.111.111.1 belong to?

Class A

Class B

Class A and B

Invalid IP Address

The IP address 111.111.111.1 belongs to Class A. In Classful IP addressing, the first octet of an IP address determines its class. Class A addresses have the first bit set to 0, indicating that the network portion is in the first octet. Since 111 is less than 128 (the range for Class A), it falls within the Class A range.

Explanation

The IP address 111.111.111.1 belongs to Class A. In Classful IP addressing, the first octet of an IP address determines its class. Class A addresses have the first bit set to 0, indicating that the network portion is in the first octet. Since 111 is less than 128 (the range for Class A), it falls within the Class A range.

4. Which class does 111.11.11.0 belong to?

Class A

Class B

Class C

Invalid IP Class

The IP address 111.11.11.0 belongs to Class A. In Class A, the first octet of the IP address is used to identify the network, while the remaining three octets are used for host addresses. Since the first octet of 111.11.11.0 is in the range of 1-126, it falls within the Class A range.

Explanation

The IP address 111.11.11.0 belongs to Class A. In Class A, the first octet of the IP address is used to identify the network, while the remaining three octets are used for host addresses. Since the first octet of 111.11.11.0 is in the range of 1-126, it falls within the Class A range.

5. Which class does 224.225.100.1 belong to?

Class C

Class C and D

Class D

None

224.225.100.1 belongs to Class D. In IP addressing, Class D is reserved for multicast addresses. Multicast addresses are used to send a single packet to multiple hosts simultaneously. The range of Class D addresses is from 224.0.0.0 to 239.255.255.255. Therefore, 224.225.100.1 falls within this range and is classified as a Class D address.

Explanation

224.225.100.1 belongs to Class D. In IP addressing, Class D is reserved for multicast addresses. Multicast addresses are used to send a single packet to multiple hosts simultaneously. The range of Class D addresses is from 224.0.0.0 to 239.255.255.255. Therefore, 224.225.100.1 falls within this range and is classified as a Class D address.

6. Which class does 224.0.0.0 belong to?

Class A

Class B

Class C

Class D

224.0.0.0 belongs to Class D. Class D IP addresses are used for multicast, which means they can be used to send data packets to multiple devices simultaneously. Multicast addresses range from 224.0.0.0 to 239.255.255.255. These addresses are used for applications like video conferencing, streaming, and online gaming, where data needs to be sent to a specific group of devices.

Explanation

224.0.0.0 belongs to Class D. Class D IP addresses are used for multicast, which means they can be used to send data packets to multiple devices simultaneously. Multicast addresses range from 224.0.0.0 to 239.255.255.255. These addresses are used for applications like video conferencing, streaming, and online gaming, where data needs to be sent to a specific group of devices.

7. Which class does 223.200.200.1 belong to?

Class A

Class B

Class C

Class D

The IP address 223.200.200.1 belongs to Class C. In Class C, the first octet ranges from 192 to 223, indicating that the address is part of a network with a medium number of hosts. Class C addresses have a default subnet mask of 255.255.255.0, allowing for up to 254 hosts per network.

Explanation

The IP address 223.200.200.1 belongs to Class C. In Class C, the first octet ranges from 192 to 223, indicating that the address is part of a network with a medium number of hosts. Class C addresses have a default subnet mask of 255.255.255.0, allowing for up to 254 hosts per network.

8. Which class does 127.0.0.1 belong to?

Invalid IP Class

Class A

For loopback or localhost only

Class A and B

The IP address 127.0.0.1 belongs to the loopback or localhost address range. This address is used to test network connectivity on a local machine without actually sending data over a physical network. It is commonly used for troubleshooting network issues or for running server software on the same machine that it is being accessed from. Therefore, the correct answer is "For loopback or localhost only."

Explanation

The IP address 127.0.0.1 belongs to the loopback or localhost address range. This address is used to test network connectivity on a local machine without actually sending data over a physical network. It is commonly used for troubleshooting network issues or for running server software on the same machine that it is being accessed from. Therefore, the correct answer is "For loopback or localhost only."

9. Which class does 0.0.0.0 belong to?

Class A

Class B

Class C

Invalid IP Class

The IP address 0.0.0.0 does not belong to a traditional IP class like Class A, B, or C. Instead, it is a special address with a specific purpose. 0.0.0.0 is used in networking to denote a default route or a non-routable meta-address used to designate an invalid, unknown, or non-applicable target. Thus, the correct answer is:

Invalid IP Class

Explanation

The IP address 0.0.0.0 does not belong to a traditional IP class like Class A, B, or C. Instead, it is a special address with a specific purpose. 0.0.0.0 is used in networking to denote a default route or a non-routable meta-address used to designate an invalid, unknown, or non-applicable target. Thus, the correct answer is:

Invalid IP Class

10. Which class does 190.0.0.0 belong to?

Class A

Class B

Class C

Class D

The IP address 190.0.0.0 belongs to Class B. In IP address classification, the first octet of the address determines the class. Class B addresses have the range from 128.0.0.0 to 191.255.255.255.

Explanation

The IP address 190.0.0.0 belongs to Class B. In IP address classification, the first octet of the address determines the class. Class B addresses have the range from 128.0.0.0 to 191.255.255.255.