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

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• Refer to the exhibit. The output that is shown is generated at a switch. Which three of these statements are true? （）

  A . All ports will be in a state of discarding, learning, or forwarding. B . Thirty VLANs have been configured on this switch. C . The bridge priority is lower than the default value for spanning tree. D . All interfaces that are shown are on shared media. E . All designated ports are in a forwarding state. F . The switch must be the root bridge for all VLANs on this switch.

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• Which three of these statements about penultimate hop popping are true？（）

  A . It is used only for directly connected subnets or aggregate routes. B . It can only be used with LDP. C . It is only used when two or more labels are stacked. D . It enables the Edge LSR to request a label pop operation from its upstream neighbors. E . It is requested through TDP using a special label value that is also called the implicit-null value. F . It is requested through LDP using a special label value that is also called the implicit-null value.

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• Which three of these statements about PPPoE are true？（）

  A . PPPoE can provide a host with access to a destination over Ethernet. You can have only one  PPPoE session per PVC B . You must install PPPoE client software on all hosts that connect to the Ethernet segment. This means that the access provider must maintain a CPE C . You cannot use PPPoE with Cisco Service Selection Gateway D . PPPoE implementation is susceptible to broadcast storms and possible denial-of-service attacks E . Per-session accounting is possible， which allows the service provider to charge the subscriber based on session time for various services offered. The service provider can also require a minimum access charge

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• Which three of these service components are in the implement phase？（）

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• Which three of these statements regarding 802.1Q trunking are correct？（）

  A . 802.1Q native VLAN frames are untagged by default. B . 802.1Q trunking ports can also be secure ports. C . 802.1Q trunks can use 10 Mb/s Ethernet interfaces. D . 802.1Q trunks require full-duplex， point-to-point connectivity. E . 802.1Q trunks should have native VLANs that are the same at both ends.

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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 three of these are elements of the Cisco Unified Wireless Network architecture？（）

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• Which three of these statements regarding 802.1Q trunking are correct?（）

  A . 802.1Q native VLAN frames are untagged by default. B . 802.1Q trunking ports can also be secure ports. C . 802.1Q trunks can use 10 Mb/s Ethernet interfaces. D . 802.1Q trunks require full-duplex, point-to-point connectivity. E . 802.1Q trunks should have native VLANs that are the same at both ends.

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• Which three of these user groups are available on cisco wcs version 4.0？（）

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  A . EIGRP for IPv6 is directly configured on the interfaces over which it runs. B . EIGRP for IPv6 is not configured on the interfaces over which it runs， but if a user uses passive-interface configuration， EIGRP for IPv6 needs to be configured on the interface that is made passive. C . There is a network statement configuration in EIGRP for IPv6， the same as for IPv4. D . There is no network statement configuration in EIGRP for IPv6. E . When a user uses a passive-interface configuration， EIGRP for IPv6 does not need to be configured on the interface that is made passive. F . When a user uses a non-passive-interface configuration， EIGRP for IPv6 does not need to be configured on the interface that is made passive

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• Which three of these statements about Dynamic Trunking Protocol are correct？（）

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• 请阅读短文，完成此题。When we analyze the salt salinity（盐溶度 ） of ocean waters, we find that it varies only slightly from place to place. Nevertheless, some of these small changes are important. There are three b

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