[多选]
Refer to the exhibit.Which three statements correctly describe Network Device A？（）

A . With a network wide mask of 255.255.255.128， each interface does not require an IP address.
B . With a network wide mask of 255.255.255.128， each interface does require an IP address on a unique IP subnet.
C . With a network wide mask of 255.255.255.0， must be a Layer 2 device for the PCs to communicate with each other.
D . With a network wide mask of 255.255.255.0， must be a Layer 3 device for the PCs to communicate with each other.
E . With a network wide mask of 255.255.254.0， each interface does not require an IP address.

没有起到事故蒸汽作用的是（）蒸汽 ①喷嘴雾化蒸汽 ②预提升蒸汽 ③汽提蒸汽 ④防焦蒸汽 ⑤松动蒸汽喷嘴雾化蒸汽；预提升蒸汽；汽提蒸汽。预提升蒸汽；汽提蒸汽；防焦蒸汽。汽提蒸汽；防焦蒸汽；松动蒸汽。喷嘴雾化蒸汽；防焦蒸汽；松动蒸汽。分包商在施工现场的协调管理工作，应由（）负责。 A.发包人。 B.工程师。 C.总承包人。 D.分包商。《铁路旅客运输管理规则》每次乘务终了，列车长应召开班组会议，总结并向派班室汇报往返乘务工作情况，提出书面乘务报告。《水利水电工程施工合同条件》规定，由指定分包商的原因造成的其分包项目质量问题，则（）。由总承包人向发包人负责。由分包人直接向发包人负责。由分包人和总承包人一起向发包人负责。分包人承担主要责任，总承包人承担连带责任。 What are two characteristics of a switch that is configured as a VTP client?（） if a switch that is configured to operate in client mode cannot access a VTP server,then the switch reverts to transparent mode.。 The local vlan configuration is updated only when an update that has a higher configuration revision number is received.。 Vtp advertisements are not forwarded to neighboring switches that are configured in vtp transparent mode.。 When switches in vtp client mode are rebooted,they send a vtp advertisement request to the vtp servers.。 Vtp client is the default vtp mode。 On switches that are configured to operate in client mode ,vlans can be created,deleted,or renamed locally。

Refer to the exhibit.Which three statements correctly describe Network Device A？（）

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[多选] Refer to the exhibit.Which three statements correctly describe Network Device A？（）

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Refer to the exhibit.Which three statements correctly describe Network Device A？（）