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Free Cisco 500-220 Actual Exam Questions - Question 3 Discussion

Question No. 3

What are two ways peers interact with ports that Auto VPN uses? (Choose two.)

Select all that apply, then reveal solution.

Imran S.

2026-02-19

It’s B and E. The VPN registry normally uses UDP 9350, and IPsec tunneling relies on UDP ports 500 and 4500—not TCP or high port ranges. The high UDP range is uncommon for this use.

Osama B.

2026-02-16

Option B stands out because the VPN registry is known to use UDP port 9350. Option E matches standard IPsec behavior using UDP ports 500 and 4500, which fits the tunneling requirements perfectly.

Peter W.

2026-02-10

It’s B and E since IPsec uses UDP 500/4500, and the registry is UDP 9350, not TCP.

Peter W.

2026-01-29

B/E for me too. UDP fits better for both registry communication and IPsec tunneling, since TCP doesn’t really work for the timing and reliability needs here. The range of high ports doesn’t sound right either.

Farhan Y.

2026-01-26

It’s B and E for me too. IPsec typically runs over UDP 500 and 4500, and the registry uses UDP port 9350, so the TCP options don’t fit with standard protocol use.

Farhan Y.

2026-01-23

It’s definitely B and E, TCP isn’t used for IPsec or the registry here.

Chris A.

2026-01-17

Option B and E seem right since registry likely uses UDP 9350 and IPsec usually uses UDP 500 and 4500 for tunnels.