easyMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command to troubleshoot an…
A network engineer runs the following command to troubleshoot an IPsec Site-to-Site VPN issue:
R1# show crypto map Crypto Map "CMAP" 10 ipsec-isakmp
Peer = 192.168.2.2 Extended IP access list 101
access-list 101 permit ip 192.168.1.0 0.0.0.255 192.168.2.0 0.0.0.255
Current peer: 192.168.2.2 Security association lifetime: 4608000 kilobytes/3600 seconds PFS (Y/N): N Transform sets={myset, }
Interfaces using crypto map CMAP:
Tunnel0
What does this output indicate?
⚠ Common exam trap
Cisco often tests the misconception that an extended ACL in a crypto map is a misconfiguration, when in fact it is required for site-to-site VPNs to define the traffic to be encrypted.
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
✓
The crypto map is correctly configured for a site-to-site VPN with the peer 192.168.2.2.
The output shows a properly configured IPsec site-to-site VPN crypto map. It includes a peer (192.168.2.2), an extended ACL (101) that correctly matches the local and remote subnets (192.168.1.0/24 and 192.168.2.0/24), a transform set (myset), and is applied to Tunnel0, which is typical for a site-to-site VPN. The security association lifetime and PFS settings are also present, confirming a valid configuration.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The crypto map is misconfigured because it uses an extended ACL with source and destination subnets.
Why it's wrong here
Using an extended ACL is correct for site-to-site VPN.
- ✓
The crypto map is correctly configured for a site-to-site VPN with the peer 192.168.2.2.
Why this is correct
The configuration matches typical site-to-site VPN requirements.
- ✗
The crypto map is missing the transform set.
Why it's wrong here
The transform set 'myset' is listed.
- ✗
The crypto map should be applied to the physical interface instead of the tunnel.
Why it's wrong here
For tunnel-based VPNs, the crypto map is applied to the tunnel interface.
Visual reference
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 300-410 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 300-410 exam.