While examining a log report you find out that an intrusion has been attempted by a machine whose IP address is displayed as 0xde.0xad.0xbe.0xef. It looks to you like a hexadecimal number. You perform a ping 0xde.0xad.0xbe.0xef. Which of the following IP addresses will respond to the ping and hence will likely be responsible for the the intrusion ?

A.
192.10.25.9

B.
10.0.3.4

C.
203.20.4.5

D.
222.273.290.239

E.
222.173.290.239

Explanation:
Convert the hex number to binary and then to decimal.
0xde.0xad.0xbe.0xef translates to 222.173.190.239 and not 222.273.290.239

0xef =
15*1 = 15
14*16 = 224
______
= 239

0xbe =
14*1 = 14
11*16 = 176
______
= 190

0xad =
13*1 = 13
10*16 = 160
______
= 173

0xde =
14*1 = 14
13*16 = 208
______
= 222