Experienced — Test 1

Correct Answer: D. D. 0x 80 0b 03 1f
Explanation: Converting the binary value to their respective hex values yields 0x 80 0B 03 1F.

Correct Answer: D. D. 14.11.45.127
Explanation: Last Address = (14.11.45.96 + 0.0.0.31)_256 = 14.11.45.127.

Correct Answer: A. A. 129.11.11.239
Explanation: Converting the binary value to their respective decimal values yields 129.11.11.239. Step-by-Step ConversionFor each octet, we multiply each bit by $2^n$ where $n$ is its position (from 7 down to 0).First Octet: 10000001$1 times 2^7 = 128$$0 times 2^6 = 0$$0 times 2^5 = 0$$0 times 2^4 = 0$$0 times 2^3 = 0$$0 times 2^2 = 0$$0 times 2^1 = 0$$1 times 2^0 = 1$Total: $128 + 1 = mathbf{129}$Second Octet: 00001011$0 times 128 = 0$$0 times 64 = 0$$0 times 32 = 0$$0 times 16 = 0$$1 times 8 = 8$$0 times 4 = 0$$1 times 2 = 2$$1 times 1 = 1$Total: $8 + 2 + 1 = mathbf{11}$Third Octet: 00001011This is identical to the second octet.Total: 11Fourth Octet: 11101111$1 times 128 = 128$$1 times 64 = 64$$1 times 32 = 32$$0 times 16 = 0$$1 times 8 = 8$$1 times 4 = 4$$1 times 2 = 2$$1 times 1 = 1$Total: $128 + 64 + 32 + 8 + 4 + 2 + 1 = mathbf{239}$Final ResultBy combining the four decimal values with periods, we get:Dotted-Decimal Notation: 129.11.11.239

Correct Answer: A. A. 01101111 00111000 00101101 01001110
Explanation: Replacing each decimal number with its binary equivalent we get 01101111 00111000 00101101 01001110.

Correct Answer: A. A. There should be no leading zeros
Explanation: There should be no leading zeros.

Correct Answer: C. C. We cannot have more than 4 bytes in an ipv4 address
Explanation: We cannot have more than 4 bytes in an IPv4 address.

Correct Answer: C. C. Each byte should be less than or equal to 255

Correct Answer: D. D. None of the mentioned
Explanation: The error is that there is a mixture of binary and dotted-decimal notation.

Correct Answer: A. A. 0x810b0bef
Explanation: We replace each group of 4 bits with its hexadecimal equivalent. Note that 0X (or 0x) is added at the beginning or the subscript 16 at the end. 0x810B0BEF or 810B0BEF_16.

Correct Answer: B. B. 1024
Explanation: Subtract the first address from the last address in base 256. The result = 0.0.3.255 Therefore, number of addresses = (3 X 256 + 255) + 1 = 1024.