Junos Configuration Hierarchy for Load-Balancing Policy

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The correct answer is A. [edit routing-options family inet].

When you want to configure load balancing in Junos, you can apply it at different levels in the configuration hierarchy. However, the routing-options hierarchy is the most common and recommended place to apply load balancing policies for forwarding traffic.

Load balancing is the process of distributing traffic across multiple paths to improve network performance and reliability. In Junos, you can implement load balancing policies by configuring routing tables and forwarding tables.

The routing-options hierarchy contains the configuration options that define routing behavior. This hierarchy is where you can configure routing policies, which determine how traffic is forwarded based on specific criteria. The family inet statement specifies the IPv4 address family, which includes all IPv4-based protocols such as IP, ICMP, TCP, and UDP.

So, by applying a load balancing policy under the [edit routing-options family inet] hierarchy, you can configure the Junos router to distribute traffic across multiple paths using different load balancing algorithms, such as round-robin, least connections, or least traffic.

On the other hand, the forwarding-options hierarchy is used to configure options that affect the forwarding of packets, such as firewall filters, policers, and classifiers. It's not the correct hierarchy to configure load balancing policies.

The routing-options forwarding-table hierarchy is used to configure static routes in the forwarding table, while the forwarding-options forwarding-table hierarchy is used to configure dynamic routing protocols in the forwarding table. Neither of these hierarchies is suitable for configuring load balancing policies.

In summary, the correct hierarchy to apply a load balancing policy in Junos is [edit routing-options family inet].