An administrator utilizes the parallel nature of dsh to streamline common tasks, but must serialize some to prevent network saturation. What dsh parameter will override the default behavior?

The fanout parameter sets the ceiling on simultaneous remote shell connections dsh opens at any one time. Setting fanout to a low value - such as 1 - forces sequential node execution, preventing the burst of concurrent connections that would saturate the network when targeting large node groups.

There is no standard dsh parameter named 'execute' that governs the degree of parallel execution.

The node-options parameter forwards option flags to the underlying remote shell client (such as ssh) for each node and does not affect how many nodes are contacted simultaneously.

The stream parameter controls whether dsh outputs results as they arrive or buffers them per node, which affects output ordering but not the level of parallelism.