Which of these recommendations is most appropriate for the core layer in the Cisco Campus Architecture？（）

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• Which two of these are characteristics of the 802.1Q protocol?（）

  A . it is a layer 2 messaging protocol which maintains vlan configurations across network. B . it includes an 8-bit field which specifies the priority of a frame. C . it is used exclusively for tagging vlan frames and dose not address network reconvergence following switched network topology changes. D . it modifies the 802.3 frame header,and thus requires that the FCS be recomputed. E . it is a trunking protocol capable of carring untagged frames.

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• NBAR supports all of these with the exception of which one？（）

  A . HTTP B . IP multicast C . TCP flows with dynamically assigned port numbers D . non-UDP protocol

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• Which of these is a correct description of SSO？（）

  A .  It will only become active after a software failure. B .  It will only become active after a hardware failure. C .  It requires that Cisco NSF be enabled in order to work successfully. D .  It synchronizes the MAC·， FIB·， and adjacency tables between Active and Standby RouteProcessors.

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• Which three of these are characteristics of UTP cable？（）

  A . The wires in each pair are wrapped around each other B . An insulating material covers each of the individual copper wires in it C . It comes in eight-pair wire bindles D . EMI and RFI cause only limited degradation to signals running over it E . It comes in seven categories F . IT has an external diameter of approximately 0 28 inche

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• Which two of these are characteristics of MPLS VPNs？ （）

  A .  Layer 3 MPLS VPNs can forward only IP packets B .  Layer 2 MPLS VPNs can forward any network protocol C .  MPL S label paths are automatically formed based on Layer 2 frames D .  Layer 3 MPLS VPNs can forward any network protocol based on Layer 2 frames E .  In Layer 2 MPLS VPNS， the service provider controls the customer Layer 3 policie

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• Which three of these are benefits of telepresence and video collaboration?（）

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• Which of these is a correct description of Stateful Switchover？（）

  A .  It will only become active after a software failure B .  It will only become active after a hardware failure C .  It requires that Cisco N3F· be enabled in order to work successfully D .  It synchronizes the MAC·， FIB·， and adjacency tables between Active and Standby Route Processor

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• Which of these statements best describes VPLS？（）

  A .  Neither broadcast nor multicast traffic is ever flooded in VPLS. B .  Multicast traffic is flooded but broadcast traffic is not flooded in VPLS. C .  VPLS emulates an Ethernet switch， with each EMS being analogous to a VLAN. D .  Because U-PE devices act as IEEE 802.1 devices， the VPLS core must use STP. E .  When the provider experiences an outage， IP re-routing restores PW connectivity and MAC re-learning is needed.

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• Which two of these are characteristics of an IDS sensor？（）

  A . passively listens to network traffic B . is an active device in the traffic path C . has a permissive interface that is used to monitor networks D . traffic arrives on one IDS interface and exits on another E . has a promiscuous interface that is used to monitor the network

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• Which two of these are characteristics of Metro Ethernet? （）

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• Which two of these are characteristics of an IPS device?（）

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• Which two of these are characteristics of multicast routing？ （）

  A .  multicast routing uses RPF B .  multicast routing is connectionless. C .  In multicast routing， the source of a packet is known. D .  When network topologies change， multicast distribution trees are not rebuilt， but use the originalpath E .  Multicast routing is much like unicast routing， with the only difference being that it has a a groupof receivers rather than just one destinatio

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• Which of these statements best describes VPLS?（）

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• Which of these is not a component of MPLS traffic engineering？（）

  A . trunk admission control B . forwarding traffic to tunnel C . information distribution D . path selection， calculation， and setup E . traffic patterns predictio

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• Which two of these are characteristics of an IPS device？（）

  A .  passively listens to network traffic B .  is an active device in the traffic path C .  has a permissive interface that is used to monitor networks D .  traffic arrives on one IPS interface and exits on another

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• Which two of these are characteristics of the 802.1Q protocol？（）

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• Which of these user ICAP？（）

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