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350-401 Practice Question: Which three statements about SSL VPNs are true?…
Which three statements about SSL VPNs are true? (Choose three.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
SSL VPNs use the TLS protocol to encrypt traffic between client and server.
SSL VPNs use TLS for encryption, can provide clientless access via web browser, and support port forwarding for legacy applications. They do not require IPsec and can use any port (typically 443).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
SSL VPNs use the TLS protocol to encrypt traffic between client and server.
Why this is correct
Correct because SSL VPNs are based on TLS (formerly SSL).
- ✗
SSL VPNs require a pre-shared key for authentication.
Why it's wrong here
Incorrect because SSL VPNs typically use certificates or username/password, not PSK.
- ✓
Clientless SSL VPN access allows users to access web applications using only a browser.
Why this is correct
Correct because clientless mode uses a web portal without additional software.
- ✗
SSL VPNs can only operate over TCP port 443.
Why it's wrong here
Incorrect because SSL VPNs can use other ports, though 443 is common.
- ✓
SSL VPNs support port forwarding for non-web applications.
Why this is correct
Correct because port forwarding allows TCP-based applications to tunnel through the SSL VPN.
Quick reference
VPN Protocol Comparison
| Protocol | Port | Encryption | Authentication | Use Case |
|---|---|---|---|---|
| IKEv2 / IPsec | UDP 500 / 4500 | AES-256 | Certificates / PSK | Site-to-site & remote access |
| SSL / TLS VPN | TCP 443 | TLS 1.3 | Certificates / MFA | Clientless remote access |
| L2TP / IPsec | UDP 1701 | AES (IPsec) | PSK / Certificates | Legacy remote access |
| WireGuard | UDP 51820 | ChaCha20 | Public keys | Modern high-performance VPN |
| PPTP | TCP 1723 | MPPE (weak) | MS-CHAPv2 | Legacy — avoid in production |
PPTP is considered insecure. IKEv2/IPsec and SSL VPN are the current recommended options.
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Last reviewed: Jun 18, 2026
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