Which network is used for inter-rack communication in a multi-rack ECS appliance?

Question

Options

• Aprivate
• Bpublic
• Cprivate.4
• Dpublic.rack

• A
  4% (1)
• B
  4% (1)
• C
  92% (22)

Explanation

In multi-rack ECS appliance deployments, private.4 is the dedicated network plane for inter-rack communication, meaning traffic that must travel between racks uses this specific network segment rather than the general-purpose private network.

Option A (private) is incorrect because the standard private network handles intra-rack internal traffic, not cross-rack communication. Option B (public) is wrong because the public network is reserved for external, client-facing traffic and is not used for internal appliance-to-appliance communication. Option D (public.rack) is a fabricated designation that does not exist in ECS appliance network architecture.

Memory tip: Think of the ".4" suffix as a signal that this network has been extended beyond the basic private network - just as a rack extends into multiple units, the private.4 plane extends private communication across racks.

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