156-315.81.20 Advanced VPN Design Practice Question
An administrator is configuring a VPN community in a Check Point R81 environment to support multiple remote access clients using Office Mode. The administrator needs to ensure that Office Mode IP addresses are assigned correctly. Which two statements about Office Mode are true? (Choose two.)
⚠ Common exam trap
The trap here is assuming Office Mode encrypts all traffic or requires a public IP, when it only provides an internal IP and encryption scope is determined by the VPN domain and client configuration.
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
✓
Office Mode assigns an IP address to the remote client from a predefined pool, allowing the client to access internal resources as if it were on the local network.
Office Mode assigns a virtual IP from a pool, DHCP, or manual configuration, allowing remote clients to access internal resources. It does not require a public IP, is not for Site-to-Site VPNs, and does not automatically encrypt all traffic. The two correct statements are that it assigns an IP from a predefined pool and that allocation can be from DHCP, manual pool, or gateway-defined pool.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Office Mode is only supported for Site-to-Site VPNs and not for Remote Access VPNs.
Why it's wrong here
Office Mode is specifically designed for Remote Access VPNs, not Site-to-Site VPNs. It provides remote clients with an internal IP address to access resources. Site-to-Site VPNs use encryption domains and do not involve Office Mode. Therefore, this statement is incorrect and misrepresents the purpose of Office Mode.
- ✗
Office Mode automatically encrypts all traffic from the client, including traffic destined for the Internet, without any configuration.
Why it's wrong here
Office Mode does not automatically encrypt all client traffic, including Internet-bound traffic. By default, only traffic destined for the encryption domain is encrypted. To encrypt all traffic, including Internet, the administrator must configure a Hub-and-Spoke or similar setup with a default route through the tunnel. Office Mode itself only assigns an IP address; it does not dictate encryption scope.
- ✗
Office Mode requires the remote client to have a publicly routable IP address to establish the VPN tunnel.
Why it's wrong here
Office Mode does not require the client to have a publicly routable IP address. The client can be behind NAT and still receive an Office Mode IP. The VPN tunnel is established using the client's actual IP, and the Office Mode IP is used for internal access. Requiring a public IP would defeat the purpose of Office Mode, which is designed to work in various network environments.
- ✓
Office Mode assigns an IP address to the remote client from a predefined pool, allowing the client to access internal resources as if it were on the local network.
Why this is correct
Office Mode assigns a virtual IP address to the remote client from a pool configured on the gateway. This allows the client to access internal resources without conflicting with its local network, as the gateway routes traffic based on the Office Mode IP. This is a fundamental feature of Office Mode in Check Point Remote Access VPN, enabling seamless access to corporate resources.
- ✓
Office Mode IP addresses can be allocated from a DHCP server, a manual IP pool, or an IP pool defined on the Security Gateway.
Why this is correct
Check Point supports multiple methods for Office Mode IP allocation: from a DHCP server, a manually defined IP pool, or an IP pool configured on the Security Gateway. This flexibility allows administrators to integrate with existing DHCP infrastructure or use a dedicated pool. The allocation method is configured in the gateway's Office Mode settings, and the correct choice depends on the network design.
Visual reference
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Check Point exam blueprint
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