單項(xiàng)選擇題Which feature would prevent guest users from gaining network access by unplugging an IP phone and connecting a laptop computer?()

A.IPSec VPN
B.SSL VPN
C.port security
D.port security with statically configured MAC addresses
E.private VLANs


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2.單項(xiàng)選擇題While you are troubleshooting network performance issues, you notice that a switch is periodically flooding all unicast traffic. Further investigation reveals that periodically the switch is also having spikes in CPU utilization, causing the MAC address table to be flushed and relearned. What is the most likely cause of this issue?()

A.a routing protocol that is flooding updates
B.a flapping port that is generating BPDUs with the TCN bit set
C.STP is not running on the switch
D.a user that is downloading the output of the show-tech command
E.a corrupted switch CAM table

3.單項(xiàng)選擇題For a router connected to two ISPs for redundancy, using IPSLA and static routing, how would you configure uRPF on the uplink interface?()

A.ip verify unicast source reachable-via any
B.ip verify unicast reverse-path
C.ip verify unicast reverse-path loose
D.ip verify unicast reverse-path strict

4.多項(xiàng)選擇題Voice quality is bad due to high delay and jitter on a link. Which two actions will improve the quality  of voice calls?()

A.Increase the queue size of the voice class.
B.Guarantee bandwidth during congestion to the voice class with a bandwidth command.
C.Increase the tx-ring of the egress interface.
D.Implement LLQ for the voice class.
E.Decrease the rx-ring of the egress interface.
F.Decrease the queue size of the voice class.

5.單項(xiàng)選擇題What action will a BGP route reflector take when it receives a prefix marked with the community attribute NO ADVERTISE from a client peer?()

A.It will advertise the prefix to all other client peers and non-client peers.
B.It will not advertise the prefix to EBGP peers.
C.It will only advertise the prefix to all other IBGP peers.
D.It will not advertise the prefix to any peers.

最新試題

Multicast is being deployed in the network, and only ip pim sparse-dense mode has been configured on all interfaces in the network to support a new video streaming application. No other multicast configuration was applied anywhere in the network. Since enabling multicast, the network monitoring tools show periodic spikes in link utilization throughout the network, even in areas where the video application is not being used. What could be a possible cause?()

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For the following items,what is the mathematical relationship between the committed information  rate (CIR), committed burst (Bc), and committed rate measurement interval (Tc)?()

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Policy-based routing allows network administrators to implement routing policies to allow or deny paths based on all of these factors except which one?()

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Phase I and Phase II DMVPN differ in terms of which of these characteristics?()

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Which switch port error is an indication of duplex mismatches on 10/100/1000 IEEE 802.3u  Gigabit Ethernet ports?()

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In GLBP, which router will answer on client ARP requests?()

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Choose two commands that are required to enable multicast on a router, when it is known that the receivers use a specific functionality of IGMPv3.()

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Which three statements are true about policing? ()

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An administrator of a peer-to-peer server application reports that the maximum bandwidth that his application receives is 90 Mb/s. You have an 8-port,100-Mb/s EtherChannel bundle on the switching infrastructure between the two servers, resulting in a bidirectional throughput of more than what is recorded. Which two solutions would allow for more bandwidth for the application?()

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For the following protocols, which one provides a mechanism to transparently intercept and redirect CIFS traffic from a client to a local Cisco Wida Area Application engine?()

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