156-315.81.20 ClusterXL and VRRP High Availability Practice Question
Which of the following is a primary benefit of using a ClusterXL High Availability cluster?
⚠ Common exam trap
Candidates sometimes confuse High Availability with Load Sharing. HA is specifically about redundancy and ensuring service continuity through failover, not about distributing traffic load across multiple active members.
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
✓
It provides seamless failover to ensure service continuity.
The primary benefit of High Availability (HA) is the elimination of a single point of failure. By having a secondary gateway ready to take over, the organization ensures business continuity. In the event of a hardware failure or a critical service outage on the active member, the standby member quickly assumes the active role, maintaining session state and preventing downtime for critical network services and external users.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It increases the total throughput of the firewall by combining CPU power.
Why it's wrong here
High Availability is not designed for performance scaling or load distribution. It is specifically built for redundancy. If throughput increase is required, the administrator should instead deploy a Load Sharing cluster, which utilizes all members for traffic inspection, though this comes with different operational requirements and complexities.
- ✓
It provides seamless failover to ensure service continuity.
Why this is correct
The core purpose of HA is to provide redundancy. By synchronizing the state tables, the standby member is ready to take over the traffic flow instantly if the active member fails. This ensures that existing sessions are preserved and that the network remains protected without any manual intervention or downtime.
- ✗
It allows for multiple security policies to be active simultaneously.
Why it's wrong here
ClusterXL requires the same security policy to be installed on all members. Having different policies would lead to unpredictable security behavior and synchronization errors. The purpose of the cluster is to provide redundancy for a single, unified security policy, not to increase the number of active policies in use.
- ✗
It replaces the need for a load balancer for internal servers.
Why it's wrong here
ClusterXL is designed to protect the gateway itself and ensure network perimeter security, not to serve as an application delivery controller or load balancer for internal web or database servers. Using it for that purpose is an incorrect application of the technology, as it lacks the necessary Layer 7 load-balancing capabilities.
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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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