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SY0-701 Threats, Vulnerabilities, and Mitigations Practice Question
Drag and drop the steps to configure a VPN tunnel using IPsec in tunnel mode into the correct order.
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
✓
Configure IKE policy, then configure IPsec transform set, then create crypto map, then apply crypto map to the interface.
IPsec VPN setup involves two phases: IKE for key exchange, then IPsec for data encryption; the crypto map ties it to an interface.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Configure IKE policy, then configure IPsec transform set, then create crypto map, then apply crypto map to the interface.
Why this is correct
This order is correct because IKE policy must be defined first for phase 1 key exchange, then the IPsec transform set defines phase 2 data protection, then the crypto map ties the transform set and peer together, and finally the crypto map is applied to the interface to activate the tunnel.
- ✗
Configure IKE policy, then create crypto map, then configure IPsec transform set, then apply crypto map to the interface.
Why it's wrong here
The crypto map command requires you to specify an existing IPsec transform set. Since the transform set hasn't been created yet when you attempt to build the crypto map, the router will reject or omit that reference, leaving the map incomplete. The transform set must be defined first to name the encryption and integrity algorithms that the crypto map will bind to the peer, so placing 'configure IPsec transform set' after 'create crypto map' is invalid.
- ✗
Create crypto map, then configure IKE policy, then apply crypto map to the interface, then configure IPsec transform set.
Why it's wrong here
This is incorrect because the crypto map depends on both the IKE policy and the IPsec transform set; starting with the crypto map without these prerequisites is invalid. Also, applying the crypto map before the transform set would cause errors.
- ✗
Configure IPsec transform set, then configure IKE policy, then create crypto map, then apply crypto map to the interface.
Why it's wrong here
This is incorrect because IKE (phase 1) should be configured before the IPsec transform set (phase 2). Although the transform set can be defined independently, the standard order is to set up the IKE policy first to establish security associations before defining data protection parameters.
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.
Go deeper
Related to this question
Learn chapter
ICS and SCADA Security Threats
Key term
VPN
A VPN creates an encrypted tunnel over a public network to securely connect remote users or sites to a private network.
Key term
Internet Protocol Security
Internet Protocol Security (IPsec) is a suite of protocols that encrypts and authenticates data packets sent over IP networks to ensure private and secure communication.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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