Why Is the Address 172

question 9

Multiple Choice

Why is the address 172.31.255.255 with a subnet mask of 255.255.255.0 invalid as a host ID?

• A)Because the subnet is incorrect for the IP address class
• B)Because the 172.x.x.x range is reserved for loopback purposes
• C)The host ID bits are all binary 1's,making the address a broadcast address and therefore invalid as a host ID.
• D)Because the network ID has a 255 in it,making this an invalid network ID