フリー問題

問題文

An order sheet lists one control chassis and two expansion chassis, and the customer asks why the expansion units cost less and cannot stand alone. The engineer has to describe what the control unit holds that the expansion unit does not. Which pair states that difference?

選択肢

1. The order mixes two kinds of chassis, so the control chassis hosts the internal bridging and the expansion chassis reaches the peer over the external interconnect in that specification.
2. The order mixes two kinds of chassis, so the control chassis hosts the internal switching and the expansion chassis reaches the peer over the external interconnect in that specification.
3. The order mixes two kinds of chassis, so the control chassis hosts the internal bridging and the expansion chassis reaches the peer over the external uplink in that specification.
4. The order mixes two kinds of chassis, so the control chassis hosts the internal switching and the expansion chassis reaches the peer over the external uplink in that specification.