The correct answers are B and C. To form an SRX chassis cluster, both devices must be assigned the same cluster ID and different node IDs. Juniper states that the cluster ID identifies the cluster, while the node ID identifies the individual node within that cluster. A valid two-node SRX chassis cluster uses node 0 on one chassis and node 1 on the other chassis. Juniper’s example shows the operational-mode commands as set chassis cluster cluster-id 1 node 0 reboot on the first device and set chassis cluster cluster-id 1 node 1 reboot on the second device.
Option A is wrong because cluster-id 0 disables clustering rather than forming a cluster. It also shows configuration-mode prompt #, while this chassis cluster node assignment is performed from operational mode. Option D is doubly wrong: cluster-id 0 disables clustering, and node 2 is invalid because SRX chassis cluster node IDs are limited to 0 and 1. The exam options omit the reboot keyword, but the only logically valid pair is still SRX1 as node 0 and SRX2 as node 1 under the same nonzero cluster ID. Reference topics: HA Clustering, chassis cluster ID, node ID, operational-mode cluster enablement.
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