The port State control officer will ensure that ______ is performed by all crude carriers either required to have a crude oil washing system or where the owner or operator chooses to install a crude oil washing system．A.cargo loading operationsB.cargo unl

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Crude oil carriers often use （）

• A、Big ships
• B、Huge ships
• C、Large container ships
• D、Supertankers

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Which of the following characteristics describe the Root Guard feature？（Choose all that apply.）（）

• A、The port must be put into forwarding state manually after root-inconsistent state has beencorrected
• B、A Root Guard port receiving superior BPDU goes into a root-inconsistent state
• C、A Root Guard port receiving inferior BPDU goes into a root-inconsistent state
• D、While the port is in a root-inconsistent state no user data is sent across that port
• E、The port returns to a forwarding state if inferior BPDUs stop
• F、It should be applied to all switch ports

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You work as a database administrator for Supportcenter.cn. Your database is in the MOUNT state and you execute the following command to open it ALTER DATABASE OPEN； What two actions are performed as a result of this command？（）

• A、All control files are opened
• B、All redo files are opened
• C、The password file is opened
• D、The parameter file is opened
• E、All online data files are opened

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During the transfer process,（）are needed.

• A、Hardware such as logistics facilities and equipment (logistics carriers) are needed
• B、Information control and standardization
• C、Supports from the government and logistics association
• D、All of them

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Which statement is correct about RSTP port roles？（）

• A、The designated port is the switch port on every nonroot bridge that is the chosen path to theroot bridge. There can be only one designated port on every switch. The designated portassumes the forwarding state in a stable active topology. All switches connected to a given segment listen to all BPDUs and determine the switch that will be the root switch for a particular segment.
• B、The disabled port is an additional switch port on the designated switch with a redundant link to the segment for which the switch is designated. A disabled port has a higher port ID than the disabled port on the designated switch. The disabled port assumes the discarding state in astable active topology.
• C、The backup port is a switch port that offers an alternate path toward the root bridge. The backup port assumes a discarding state in a stable， active topology. The backup port will be present on nondesignated switches and will make a transition to a designated port if the current designated path fails.
• D、The root port is the switch port on every nonroot bridge that is the chosen path to the root bridge. There can be only one root port on every switch. The root port assumes the forwarding state in a stable active topology.

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You have created an ASP.NET server control named Shopping Cart for use by other developers. Some developers report that the Shopping Cart control does not function properly with ViewState disabled. You want to ensure that all instances of the Shopping Cart control work even if View State is disabled. What should you do？（）

• A、Require developers to set EnableViewStateMac to true.
• B、Store state in ControlState instead of ViewState.
• C、Serialize the state into an Application state entry called "MyControl".
• D、Require developers to change the session state mode to SQLServer.

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