What are two benefits of MLPPP?（）A、Cost-efficient solution when incrementing bandwidth.B、Provides for fail over when the primary link goes down.C、Evenly distributes traffic over participating member links.D、Guarantees that the link will remain up during f

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第2题：

在1350OMS-PKT管理下，基于SDH的VCi之上建立的一条Link是什么类型的Link（）

• A、Link over TDM
• B、Link over T-MPLS
• C、Link Over Cable

第3题：

Which statement is true when using a Cisco Wireless Mesh Networking Solution？（）

• A、The backhaul link is dynamic 1 to 54Mb/s.
• B、The backhaul link is typically a fixed value.
• C、The backhaul link uses DAS antennas.
• D、The backhaul link uses antenna multiplexing.
• E、The backhaul link does not rely on fade margin.

第4题：

What is the purpose of Dual Ring Interconnect with D C for SDH rings？（）

• A、Protects signals when a ring switch fails
• B、Protects signals when multiple span switches fail
• C、Protects pre-emptible traffic from being dropped when a ring switch occurs
• D、Protects signals against any combination of link failure in each ring

第5题：

In the design of a QoS solution， which two factors should be taken into consideration？（）

• A、 On congested links， all forms of traffic will require some form of QoS.
• B、 All traffic types and requirements should be examined to determine the number of traffic classes required.
• C、 In the implementation of link efficiency mechanisms on links that typically transport relatively large packets， header compression will be most efficient.
• D、 In the implementation of link efficiency mechanisms on links that typically transport relatively small packets， header compression will be most efficient.
• E、 In the implementation of link efficiency mechanisms on links that typically transport relatively small packets， payload compression will be most efficient.
• F、 Payload compression provides more available bandwidth and reduces processing delay time.

第6题：

What are two enhancements that OSPFv3 supports over OSPFv2? （）

• A、It requires the use of ARP.
• B、It can support multiple IPv6 subnets on a single link.
• C、It supports up to 2 instances of OSPFv3 over a common link.
• D、It routes over links rather than over networks.

第7题：

What is the purpose of the cisco Vlan Trunking protocol?（）

• A、to provide a mechanism to dynamically assign vlan membership to switch ports
• B、to allow traffic to be carried from multiple vlans over a single link between switches
• C、to allow native vlan information to be carried over a trunk link
• D、to provide a mechanism to manually assign vlan membership to switch ports
• E、to allow for managing the additions,deletions,and changes of vlans between switchs

第8题：

Describe the benefits of a virtual tape solution over a native tape solution in a mainframe serverenvironment.（）

• A、 the use of physical LTO-5 drives and cartridges for virtualization reduces the overall floor spacerequired for the virtual tape solution 
• B、 the virtual tape solution reduces the number of cartridges and physical drives required, andimproves throughput 
• C、 the virtual tape solution provides a faster robotic access to virtual cartridges sent to the physicaltape librarywhich guarantees faster accesstimes 
• D、 the virtual tape solution provides a larger range of virtual tape drives and automates the backupprocess to physical tape by full synchronousreplication 

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第14题：

Which statement is correct about an OSPF sham-link？（）

• A、A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.
• B、A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.
• C、A sham-link is a logical link between PE routers that carries OSPF LSAs and forwards customer traffic across it.
• D、A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.
• E、A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.

第15题：

You have configured voice VLANs on Catalyst switch R1.  Which two statements are true about the  operation of voice VLANs on this device？ （）

• A、 When the voice VLAN feature is enabled， all untagged traffic is sent according to the default  CoS priority of the port.
• B、 Enabling voice VLANs enables the switch to create multiple queues for traffic that is entering a  port.
• C、 When voice VLANs are configured on a trunk link， UplinkFast must also be enabled.
• D、 Voice VLANs are configured to enable the switch to forward frames marked with the proper  CoS values over separate physical links.
• E、 Enabling voice VLANs enables the switch to forward frames with a specific 802.1P marking.

第16题：

Virtual PortChannels （vPCs） allow links that are physically connected to two different Cisco switches to appear to a third downstream device as coming from a single device and as part of a single port channel. Which of the following are components of a Virtual PortChannel system？ （）

• A、 Two peer devices： the vPC peers of which one is primary and one is secondary and are part of a vPC domain.
• B、 A Layer 3 Gigabit Ethernet link called peer-keepalive link to resolve dual-active scenarios
• C、 A redundant 10 Gigabit Ethernet PortChannel called a peer link to carry traffic from one system to the other when needed
• D、 vPC member ports forming the PortChannel
• E、 A dot1q trunk between the vPC peers
• F、 A management port that can be used as peer-keepalive link to resolve dual-active scenarios.

第17题：

Which two link protocols are used to carry multiple VLANs over a single link?（）

• A、VTP
• B、802.1q
• C、IGP
• D、ISL
• E、802.3u

第18题：

When a new trunk is configured on a 2950 switch, which VLANs by default are allowed over the trunk link（）。

• A、no VLANs
• B、all VLANs
• C、only VLANs 1 - 64
• D、only the VLANs that are specified when creating the trunk

第19题：

When load balancing traffic between two web servers， which of the following technologies provides the LOWEST cost solution？（）

• A、 Active/passive cluster
• B、 Active/active cluster
• C、 Log shipping
• D、 DNS round robin

第20题：

Which two statements are true regarding redundancy groups？（）

• A、When priority settings are equal and the members participating in a cluster are initialized at the same time， the primary role for redundancy group 0 is assigned to node 0.
• B、The preempt option determines the primary and secondary roles for redundancy group 0 during a failure and recovery scenario.
• C、Redundancy group 0 manages the control plane failover between the nodes of a cluster.
• D、The primary role can be shared for redundancy group 0 when the active-active option is enabled

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