What are two key factors of force description？ [Clink on 2 answers. ]

A .  Shared key authentication is considered more secure than open authentication. B .  Shared key authentication is considered less secure than open authentication. C .  If the WEP keys do not match using the open authentication method， the client will not authenticate， associate， and transfer data. D .  If the WEP keys do not match using the open authentication method， the client will still be able to authenticate and associate， but will not transfer data. E .  If the WEP keys do not match using the open authentication method， the client will still be able to authenticate， associate， and transfer data.

A . VTP messages are sent out all switch-switch connections. B . VTP L2 messages are communicated to neighbors using CDP. C . VTP manages addition， deletion， and renaming of VLANs 1 to 4094. D . VTP pruning restricts flooded traffic， increasing available bandwidth. E . VTP V2 can only be used in a domain consisting of V2 capable switches. F . VTP V2 performs consistency checks on all sources of VLAN information.

A . availability of tools B . shape of the hull C . pressure exerted by the water D . threat of progressive flooding

A . shared key authentication is considered more secure than open authentication B . shared key authentication is considered less secure than open authentication C . if the WEP keys do not match using the open authentication method， the client will not authenticate， associate， and transfer data D . if the WEP keys do not match using the open authentication method， the client will still be able to authenticate and associate， but will not transfer data E . if the WEP keys do not match using the open authentication method， the client will still be able to authenticate， associate， and transfer data

A . It is not possible to disable the primary key constraint. B . It is possible to have more than one primary key constraint in a single table. C . The primary key constraint can be referred by only one foreign key constraint. D . The primary key constraint can be imposed by combining more than one column. E . The non-deferrable primary key constraint creates an unique index on the primary key column if it is not already indexed.

A . the number of firewall connections allowed B . the base price under $1000 C . intrusion prevention D . number of VLANs supported E . double the connection speed

A . number of product features B . return on investment C . competitiveness D . regulation E . day one costs F . availability of budget

A．Nike is the best brand of athletic footwear and sports clothing. B．The managers of Nike, Bowerman and Knight are both athletes. C．The company let Jordan endorse Nile's shoes. D．The diligence of the company managers. 此题为多项选择题。

A．time and age B．ability and sex C．talent and age D．time and motivation

A．Spending habits. B．Distance travelled by cars. C．Size of families. D．Attitude towards energy saving.

A．Sacred customs B．An attractive leader C．A social cause D．Legal elections

A．Environmental endocrine disruptors B．Organic pollutants C．Social environment D．Physical factors 此题为多项选择题。