The 32-bit internet address 10000000 00001010 00000010 00011110 will be written in dotted decimal notation as A. 128.10.2.30 B. 210.20.2.64 C. 164.100.9.61 D. 148.20.2.30 E. None of the above

The correct answer is A. 128.10.2.30.

To convert a 32-bit internet address to dotted decimal notation, you divide the address into four 8-bit octets and write each octet as a decimal number between 0 and 255. The octets are separated by periods.

In this case, the 32-bit internet address is 10000000 00001010 00000010 00011110. This can be divided into four 8-bit octets as follows:

• Octet 1: 10000000 = 128
• Octet 2: 00001010 = 10
• Octet 3: 00000010 = 2
• Octet 4: 00011110 = 30

The dotted decimal notation for this address is therefore 128.10.2.30.

The other options are incorrect because they do not represent the correct dotted decimal notation for the given 32-bit internet address.