Identify the class of the following IPv4 binary address: 10111110.10101001.10101010.10011001.a.Ab.Dc.Ed.Ce.B

The provided address is not a valid IPv4 address. An IPv4 address consists of four sets of binary octets, or four sets of numbers ranging from 0 to 255, separated by periods. The address you provided has more than four sets and includes non-binary characters.

However, if we only consider the first four sets (10111110.10101001.10101010.10011001), we can identify the class of this IPv4 address.

1. Convert the first octet from binary to decimal. The binary number 10111110 converts to the decimal number 190.

2. Use the first octet (190) to determine the class of the address.

• Class A includes addresses where the first octet is between 1 and 126.
• Class B includes addresses where the first octet is between 128 and 191.
• Class C includes addresses where the first octet is between 192 and 223.
• Class D includes addresses where the first octet is between 224 and 239.
• Class E includes addresses where the first octet is between 240 and 255.

Given that the first octet of the address is 190, this address falls into Class B.