Oracle Communications Session Border Controller — Question 30

What two problems do Network Address Translations (NATs) introduce into VoIP networks? (Choose two.)

Answer options

• A. There are no major concerns with NATs.
• B. NATs block unsolicited incoming signaling and media.
• C. NATs block unsolicited incoming signaling but allow incoming media.
• D. NATs pinholes expire after a configurable time.
• E. NATs devices can be overloaded by incoming registrations.

Correct answer: D, E

Explanation

The correct answers are D and E because NAT pinholes can indeed expire after a configurable duration, leading to communication issues, and NAT devices can become overloaded when processing many incoming registrations. Options A, B, and C are incorrect as they either downplay the issues or misstate how NATs handle incoming traffic.