What type of services are provided by the Cisco IOS gateways in a VoIP network with Cisco CallManager functionality？ （）

A . produces higher margins than product sales along B . generate recurring revenue C . strengthens customer loyalty D . renews automatically for the lifetime of the product E . helps customers speed architectural planning and design F . eliminates network problem

A . Prepare, Plan, Design, Apply, Operate, and Manage B . Prepare, Plan, Design, Implement, Operate, and Optimize C . Prepare, Plan, Design, Implement, Operate and Manage D . Prepare, Plan, Create, Implement, Operate, and Improve

A . Open B . Public C . Private D . Virtual

A .  FIFO queuing， which provides a means to hold packets while they are waiting to exit an interface B .  Priority queuing， which ensures a fixed amount of bandwidth C .  Custom queuing （CQ）， which provides a queuing tool that services all queues， even during times of congestion D .  Bandwidth queuing， which ensures a minimum amount of bandwidth E .  Weighted fair queuing （WFQ）， which classifies packets based on flow

A . Oil Rig chain and Oil Field Stud Link chain B . Flash-butt welded chain and Di-Lok chain C . Flash-butt welded chain and Oil Rig chain D . Oil Field Stud Link chain and Flash-butt welded chai

A . Phosphorous B . Safety C . Self-extinguishing D . Woode

A . Open B . Public C . Private D . Virtual

A . Application Software Updates B . Cisco Advisory Services C . Advanced Hardware Replacement D . Software Support E . Cisco.com F . Warranty for hardware

A . It uses a Reliable transport mechanism. B . It uses a Non-reliable transport mechanism C . It is less bandwidth-intensive than connection oriented services D . it uses handshaking

A . Open B . Public C . Private D . Virtual

A . timing B . queuing C . differential D . serialization E . packetization F . propagatio

A . Fibre Channel and SAS  B . Fibre Channel and iSCSI  C . Fibre Channel, iSCSI and SAS  D . Fibre Channel, iSCSI and InfiniBand&e

A . link efficiency B . admission control C . classification and marking D . shaping and policing E . congestion avoidance using the RTP protocol F . resource reservation using the RSVP protocol

A . Cisco IOS gateways provide services such as address translation and network access control for the devices on the network B . Cisco IOS gateways provide services such as bandwidth management and accounting C . Cisco IOS gateways provide media termination and signal translation between the public switched telephone network （PSTN） and IP networks D . Cisco IOS gateways provide zone management for all registered endpoints in the network

A .  Shared Distributed Destinations （SDD） B .  Uniform Distributed Destinations （UDD） C .  Weighted Distributed Destinations （WDD） D .  Bounced Distributed Destinations （BDD）

A .  Resource Reservation Protocol （RSVP） B .  first-in， first-out （FIFO） C .  best-effort D .  CBWFQ E .  IntServ F .  DiffServ

A .  link efficiency B .  admission control C .  classification and marking D .  shaping and policing E .  congestion avoidance using the RTP protocol F .  resource reservation using the RSVP protocol

A、U-shape B、 Classroom-type C、Theater-type D、Hollow-shape

A、Questions on Analysis and Reasoning B、Questions on Causality C、Questions on Comparison D、Questions on Identity and Relationship

The first is called the "tank test". A modem airplane must fly very high in the sky. Air must be pumped into the plane so that the passengers can breathe. The metal structure (结构) of the plane has to be very strong for this reason. When the plane is filled with air, the air presses against the skin of the plane inside. The pressure (压力) on a small window is like a huge foot that is trying to get out. If a small part of the plane were to fail, the plane would explode in the sky. To test the structure of the plane, the plane is lowered into a huge tank or container of water. Then it is filled with air. The pressure inside the plane is greater than it ever will be when it is high up in the air. Finally, there is an explosion. This does not cause so much damage inside the water tank as it would anywhere else. Engineers can discover which part of the plane has broken. Then that part is made stronger. The most dangerous test happens when the new plane is going through test flights in the air. The test pilot must find out exactly what happens when the engines(发动机) are all shut off at once. The plane begins to fall like a stone. It is the pilot's job to find out how he can get control of the plane again. These two tests are examples of how planes are made safe before they ever carry passengers. By doing the "tank test", the engineers can find out______. A．the amount of air in the plane B．the strength of the plane structure C．the pressure inside and outside the plane D．the power of the airplane engines