Work Flow控制Data Flow的逻辑流程，Data Flow定义物理ETL操作

Job由Work flow和Data flow构成（ ）

Flow control is one of the basic functions of the data link layer. Regarding flow control, which one is correct among following statements? A: Only the data link layer has flow control B: Not only the data link layer has flow control, but the flow control objects of each layer are the same C: Not only does the data link layer have flow control, but the flow control objects of each layer are different D: None of the above is right

Every transaction in electronic commerce includes information flow, commercial flow, （） and material flow. A: merchandise flow B: data flow

（）is not a physical wall but a flow virtual data to protect the computer network.

Data flow 包含数据源、数据目标及转换（transform)。

数据流图(Data Flow Diagram )的英文缩写是____。

Which OSI layer handles flow control, data segmentation, and reliability A: Application B: Physical C: Transport D: Data Link

data-flow diagram ______

What command visualizes the general NetFlow data on the command line?（） A: show ip flow export B: show ip flow top-talkers C: show ip cache flow D: show mls sampling E: show mls netflow i