Linux Foundation Certified System Administrator (LFCS) — Question 115

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

Answer options

• 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

Correct answer: B, D, E

Explanation

The correct answers, B (10.0.0.0/8), D (172.16.0.0/12), and E (192.168.0.0/16), are all designated as private address spaces by IANA. Option A (127.0.0.0/8) is a loopback address, and C (169.255.0.0/16) is reserved for link-local addresses, thus they are not suitable for private routing.