A supernet has a first address of 205.16.32.0 and a supernet mask of 255.255.248.0. A router receives 4 packets with the following destination addresses. Which packet belongs to this supernet?
- A. 205.16.42.56
- B. 205.17.32.76
- C. 205.16.31.10
- D. 205.16.39.44
Answer: D. 205.16.39.44
Explanation: Mask 255.255.248.0 (/21). Interval size in 3rd octet = $256 - 248 = 8$.\nRange: 205.16.32.0 to 205.16.39.255.\n(a) 42 is out.\n(b) 205.17... is out.\n(c) 31 is out (<32).\n(d) 39 is in range [32, 39]. Correct.