フリー問題

問題文

A retailer's stores send card authorizations to a payment provider on the internet, and the rollout has to begin where a mistake costs least. Which stream is this, and which block goes first?

選択肢

1. Card authorizations leaving every store are the external stream toward that provider, and the part of the network which moves first is the branch block of that rollout plan.
2. Card authorizations leaving every store are the lateral stream toward that provider, and the part of the network which moves first is the backbone block of that rollout plan.
3. Card authorizations leaving every store are the external stream toward that provider, and the part of the network which moves first is the backbone block of that rollout plan.
4. Card authorizations leaving every store are the lateral stream toward that provider, and the part of the network which moves first is the branch block of that rollout plan.