JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2021) — Question 79

Which two statements about the DNS ALG are correct? (Choose two.)

Answer options

• A. The DNS ALG supports DDNS.
• B. The DNS ALG supports VPN tunnels.
• C. The DNS ALG performs DNS doctoring.
• D. The DNS ALG does not support NAT.

Correct answer: A, C

Explanation

Option A is correct as the DNS ALG indeed supports Dynamic DNS (DDNS), allowing for automatic updates of DNS records. Option C is also correct because DNS doctoring is a feature of the DNS ALG that modifies DNS responses. Options B and D are incorrect; the DNS ALG does not specifically support VPN tunnels and does not inherently lack NAT support.