Which of the following high availability features provide redundancy and failover in case of hardware or link failures? (Choose two)

High availability is achieved through redundancy. Virtual Chassis technology allows multiple physical switches to be interconnected and operate as a single logical device. If one member switch fails, the other members seamlessly take over, providing hardware-level redundancy and failover. Similarly, Link Aggregation Groups (LAG) bundle multiple physical network links into a single logical link. If one of the physical links within the LAG fails, traffic is automatically redistributed among the remaining active links, ensuring link-level redundancy and preventing a service outage. Both are fundamental features for building resilient networks.

A. RIP is a routing protocol that can find alternate paths, but it is not considered a primary high availability feature due to its slow convergence.

B. Graceful Restart (GR) maintains forwarding during a control plane restart but does not provide redundancy for hardware or link failures.

1. Juniper Networks Documentation. (2023). Understanding Virtual Chassis Technology. Junos OS 23.4. The "Benefits of a Virtual Chassis" section states

"A Virtual Chassis provides device-level redundancy. If one member switch in a Virtual Chassis fails

the other member switches can continue to forward traffic."

2. Juniper Networks Documentation. (2023). Understanding Aggregated Ethernet Interfaces (LAGs). Junos OS 23.4. The "Overview" section states

"Another advantage of link aggregation is increased availability

because the LAG is composed of multiple member links. If one member link fails

the LAG continues to carry traffic over the remaining links."