SDSI Secure Infrastructure Design Practice Question
When designing a VPN solution for a hybrid workforce, which protocol provides the most robust support for DTLS to minimize latency for real-time traffic?
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
✓
Cisco Secure Client with DTLS enabled.
AnyConnect (Cisco Secure Client) utilizes DTLS to prioritize latency-sensitive traffic over the standard TLS tunnel.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Cisco Secure Client with DTLS enabled.
Why this is correct
Cisco Secure Client (formerly AnyConnect) uses DTLS to handle real-time traffic efficiency.
- ✗
SSL VPN Clientless portal.
Why it's wrong here
Clientless portals do not support DTLS and introduce significant latency.
- ✗
L2TP/IPsec.
Why it's wrong here
L2TP is not optimized for modern hybrid work latency requirements.
- ✗
IPsec IKEv1.
Why it's wrong here
IKEv1 is legacy and lacks modern DTLS capabilities for AnyConnect.
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.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Cisco exam blueprint
This SDSI practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SDSI exam.