Which of the following IPv4 networks are reserved by IANA for private address assignment and private routing? (Choose THREE correct answers.)



A. 127.0.0.0/8
B. 10.0.0.0/8
C. 169.255.0.0/16
D. 172.16.0.0/12
E. 192.168.0.0/16

題解

IANA(網際網路號碼分配權威機構, Internet Assigned Numbers Authority)所定義的私有IP範圍如下：
  • 10.0.0.0/8：10.0.0.0 ~ 10.255.255.255
  • 172.16.0.0/12：172.16.0.0 ~ 172.31.255.255
  • 192.168.0.0/16：192.168.0.0 ~ 192.168.255.255

所以答案是選項B、選項D和選項E。