Oracle
1Z0-400 · Question #13
How does the Session Border Controller ensure that a pinhole is kept open for persistent communication to a SIP endpoint behind a NAT device?
The correct answer is E. By changing the expires= parameter to a defined value in 200 OK responses to REGISTERS. See the full explanation below for the reasoning.
Question
How does the Session Border Controller ensure that a pinhole is kept open for persistent communication to a SIP endpoint behind a NAT device?
Options
- ABy sending messages at a defined frequency
- BBy sending ARP requests at a defined frequency
- CBy issuing PINGs to the endpoint's NAT address
- DBy changing the expires= parameter to a defined value in 200 OK responses to INVITEs
- EBy changing the expires= parameter to a defined value in 200 OK responses to REGISTERS
How the community answered
(28 responses)- A11% (3)
- B4% (1)
- C7% (2)
- E79% (22)
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