What is the advantage of using a multipoint interface instead of point-to-point subinterfaces when configuring a Frame Relay hub in a hub-and-spoke topology?（）

A . Cranes are able to pick up and drop loads over a greater spotting area B . Increased safety because the deck is clear of running and standing rigging C . Simplicity of operation of the crane by its operator D . All of the above

A . It is effective in controlling fire in flowing oil such as coming from a broken fuel line B . It absorbs heat from materials that could cause reignition C . Most foams can be used jointly with dry chemical extinguishing agents to attack a fire by two methods of extinguishment D . Once the surface is blanketed with foam and the fire is extinguished，no further foam is required

A . The DS8800 has a higher disk RPM than the Symmetrix DMX-4 B . The DS8800 has higher capacity with more efficient footprint than the Symmetrix DMX-4 C . The DS8800 supports FlashCopy for internal array replication D . The DS8800 supports external virtualizatio

A . It improves resync operations. B . This feature enables much faster file opens. C . It improves performance as fewer extent pointers are needed in the shared pool. D . It improves performance by reading from a copy of an extent closest to the node.

A .  It improves resync operations. B .  This feature enables much faster file opens. C .  It improves performance as fewer extent pointers are needed in the shared pool. D .  It improves performance by reading from a copy of an extent closest to the node.

A .  Because Banks are still connecting via dial-up. B .  Because Banks need to save cost. C .  Because Banks find themselves with an obsolete branch infrastructure. D .  Many banks need back-office process streamlining.

A . Fiber core rope offers greater strength B . Fiber core rope offers greater flexibility C . Fiber core rope can be used at higher operating temperatures D . Fiber core rope is the only type authorized for cargo runner

A .  It supports admission control that allows a network to reject or downgrade new RSVP sessions if one of the interfaces in the path has reached the limit （that is， all reservable bandwidth is booked）. B .  RSVP signals QoS requests per individual flow. In the request the authorized user （authorization object） and needed traffic policy （policy object） are sent. The network can then provide best-effort delivery to these individual flows. C .  RSVP streamlines communication by making it unnecessary to inform network devices of flow parameters （IP addresses and port numbers）. D .  Because of the stateful RSVP architecture， continuous signaling does not have to occur. E .  The flow-based approach is scalable to large implementations， such as the public Internet， because RSVP tracks each individual flow.

A . Easily plotted on a Mercator chart B . Negligible increase in distance on east-west courses near the equator C . Does not require constant course changes D . Plots as a straight line on Lambert conformal chart

A . Less fuel consumption per SHP B . Diesel fuel costs less than bunker C or its equivalent C . Less routine maintenance required D . Less weight per SHP

A . POWER5 supports multiple operating systems. B . POWER5 supports more nodes in a clustered environment. C . POWER5 hypervisor has significantly less overhead than hardware partitioning. D . POWER5 has greater granularity of resources such as memory， processors and I/O.

A .  They are implemented using Java and XML B .  They support a client-server programming model C .  They are used to create tightly coupled applications D .  They are implemented using standardized technologie

A．New membership discounts. B．Free lectures. C．Free audio programs. D．A Free magazine.

A．Bonds are generally of lower risk than stocks. B．Bonds offer a good source of income for retirees. C．Bonds issued by any stable country are almost risk-free securities. D．All of the above.

A．It makes international transfer easier. B．It reduces the cost of global marketing. C．It stops competitors copying IKEA

A．Using new media will prepare us for the futur eB．Media multitasking helps us pay attention． C．Using new media helps us manage information． D．Multimedia will increase our memories．

A.Single user logons are easier to manage and audit. B.Each session has a unique (one-time) password assigned to it. C.Audit and access information are not kept on the access server. D.Call-back is very difficult to defeat.