The answer is that the crypto map is applied to interface Tunnel0 and uses ACL 100 to define interesting traffic. This is correct because the output of the show crypto map command explicitly lists "Interfaces using crypto map VPN-MAP: Tunnel0," confirming the interface binding, while the "Extended IP access list 100" line shows the ACL that matches traffic from 10.1.1.0/24 to 192.168.1.0/24, which is the traffic that will be encrypted and sent over the VPN tunnel. On the Cisco CCNP ENARSI 300-410 exam, verifying crypto map configuration is a core skill for troubleshooting site-to-site VPNs, and this command tests your ability to read the output quickly—common traps include confusing the peer IP with the interface or misreading the ACL direction. A key memory tip is to remember that the crypto map ties three things together: the interface, the peer, and the interesting traffic ACL, so always check all three lines in the output.
300-410 IPsec Site-to-Site VPN Practice Question
This 300-410 practice question tests your understanding of ipsec site-to-site vpn. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A network engineer runs the following command on Router R1:
R1# show crypto map
Crypto Map "VPN-MAP" 10 ipsec-isakmp
Peer = 10.1.1.2
Extended IP access list 100
access-list 100 permit ip 10.1.1.0 0.0.0.255 192.168.1.0 0.0.0.255
Current peer: 10.1.1.2
Security association lifetime: 4608000 kilobytes/3600 seconds
PFS (Y/N): N
Transform sets={ESP-AES256-SHA,}
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 applied to interface Tunnel0 and uses ACL 100 to define interesting traffic.
The crypto map is applied to Tunnel0 and uses ACL 100 to match traffic from 10.1.1.0/24 to 192.168.1.0/24. This is a typical site-to-site VPN configuration.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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 applied to interface Tunnel0 and uses ACL 100 to define interesting traffic.
Why this is correct
The output shows Tunnel0 uses this crypto map and ACL 100 defines the traffic.
Related concept
Standard ACLs match source addresses.
✗
Perfect Forward Secrecy (PFS) is enabled.
Why it's wrong here
PFS is set to 'N' (no).
✗
The crypto map uses dynamic IPsec peer discovery.
Why it's wrong here
The peer is statically configured as 10.1.1.2.
✗
The crypto map is not applied to any interface.
Why it's wrong here
It is applied to Tunnel0.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.
TExam Day Tips
→Check inbound versus outbound direction.
→Read the ACL from top to bottom.
→Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
How this comes up in practice
A security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 300-410 question in full detail.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 300-410 ACL questions on filtering logic and placement.
IPsec Site-to-Site VPN — This question tests IPsec Site-to-Site VPN — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: The crypto map is applied to interface Tunnel0 and uses ACL 100 to define interesting traffic. — The crypto map is applied to Tunnel0 and uses ACL 100 to match traffic from 10.1.1.0/24 to 192.168.1.0/24. This is a typical site-to-site VPN configuration.
What should I do if I get this 300-410 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 300-410 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. 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?
easy
A.The crypto map is misconfigured because it uses an extended ACL with source and destination subnets.
✓ B.The crypto map is correctly configured for a site-to-site VPN with the peer 192.168.2.2.
C.The crypto map is missing the transform set.
D.The crypto map should be applied to the physical interface instead of the tunnel.
Why B: Option B is correct because 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.
Last reviewed: Jun 18, 2026
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