350-701 Network Security Practice Question
A network administrator is configuring a site-to-site VPN between two Cisco ASA firewalls using IKEv2. Which component defines the encryption and authentication algorithms for the IPsec SA?
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
✓
Transform set
In IKEv2, IPsec SA parameters like encryption and authentication are defined in a transform set, which is then associated with a crypto map or VTI.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Crypto map
Why it's wrong here
Crypto map binds transform set, peer, and ACL, but does not define the algorithms.
- ✗
Group policy
Why it's wrong here
Group policy is used for remote access VPN, not site-to-site IPsec.
- ✗
ISAKMP policy
Why it's wrong here
ISAKMP policy defines IKE phase 1 parameters, not IPsec SA.
- ✓
Transform set
Why this is correct
Correct. Transform set specifies encryption and authentication for IPsec.
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.