An engineer is responsible for configuring a new firewall solution that will be deployed in a new public cloud environment. All traffic must pass through the firewall. The SLA for the firewall is 99.999%. Which of the following should be deployed?
HA (High Availability) firewall configuration means that there are two firewalls that backup each other; if one firewall fails, the other immediately takes over. This ensures there is no single point of failure (SPOF).
C. Two firewalls in a HA configuration
Explanation:
To achieve a high SLA of 99.999% (often referred to as "five nines" uptime), you need a highly available and redundant setup. Deploying two firewalls in a High Availability (HA) configuration ensures that if one firewall fails, the other can take over without disrupting traffic, thereby maintaining continuous service.
The other options, such as load balancers, blue-green configuration, or a web application firewall, do not provide the same level of redundancy and failover capabilities as a HA firewall configuration.
C. Two firewalls in a HA (High Availability) configuration is the best option to achieve the desired SLA of 99.999%. With a HA configuration, two firewalls are deployed and configured to work in tandem, so that if one firewall fails, the other will take over seamlessly and ensure continuous operation with minimal downtime. This helps to achieve high availability and improve reliability, which is critical for meeting the demanding SLA requirement.
High availability (HA) allows you to place two firewalls in a group and synchronize their configuration. This prevents a single point of failure on your network. The two firewalls have a heartbeat connection, which ensures failover if one of the firewalls goes down
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