350-701 Network Security Practice Question
Which VPN technology allows Cisco AnyConnect clients to use UDP for transport to avoid TCP overhead and improve performance?
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
✓
DTLS
DTLS (Datagram Transport Layer Security) is used by AnyConnect to provide a UDP-based SSL VPN, reducing latency compared to TCP.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
IPsec
Why it's wrong here
IPsec typically uses ESP or AH, not UDP for transport layer.
- ✗
L2TP
Why it's wrong here
L2TP is a tunneling protocol often used with IPsec.
- ✗
IKEv2
Why it's wrong here
IKEv2 is for IPsec VPNs, not SSL VPN.
- ✓
DTLS
Why this is correct
Correct. DTLS provides UDP-based encryption 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.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-701 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 350-701 exam.