Which port state is introduced by Rapid-PVST?（）

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  A . used for either a single or dual UCS catastrophic failure B . can be restored with no special requirements C . stored as gzipped tarball D . easy to modify as needed

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• Which statement is true regarding the Port Aggregation Protocol？ （）

  A . Configuration changes made on the port-channel interface apply to all physical ports assigned to the portchannel interface. B . Configuration changes made on a physical port that is a member of a port-channel interface apply to the port-channel interface. C . Configuration changes are not permitted with Port Aggregation Protocol； instead， the standardized Link Aggregation Control Protocol should be used if configuration changes are required. D . The physical port must first be disassociated from the port-channel interface before any configuration changes can be made.

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• The conventions under which the port state control inspection is carried out include all the following except （）.

  A . SOLAS 74 B . MARPOL 73/78 C . STCW 78/95 D . ISM Code

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

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• The CTI Port Group is configured under which Subsystem?（）

  A . ICD   B . CMT   C . JTAPI   D . Applicatio

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• Which port state is interface Fa0/2 of switch 2 in for VLANs 1 and 160？ （）

  A . Listening B . Learning C . Disabled D . Blocking E . Forwarding F . Discarding G . None of the other alternatives apply

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• Refer to the exhibit. In the diagram， the switches are running IEEE 802.1s MST. Which ports are in the MST blocking state？（）https://assets.asklib.com/images/image2/2018072317300046507.jpg

  A .  GE-1/2 and GE 2/1 B .  GE-1/1 and GE-2/2 C .  GE-3/2 and GE 4/1 D .  no ports are in the blocking state E .  There is not enough information to determine which ports are in the blocking state.

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• A port in a redundant topology is currently in the blocking state and is not receiving BPDUs. To ensure that this port does not erroneously transition to the forwarding state，  which command should be configured to satisfy the requirement？（）

  A . Switch（config）#spanning-tree loopguard default B . Switch（config-if）#spanning-tree bdpufilter C . Switch（config）#udld aggressive D . Switch（config-if）#spanning-tree bpduguard

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• Which two states are the port states when RSTP has converged?（）

  A . blocking B . learning C . discarding D . forwarding E . listening

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• Which statement is correct about RSTP port roles？（）

  A . The designated port is the switch port on every nonroot bridge that is the chosen path to theroot bridge. There can be only one designated port on every switch. The designated portassumes the forwarding state in a stable active topology. All switches connected to a given segment listen to all BPDUs and determine the switch that will be the root switch for a particular segment. B . The disabled port is an additional switch port on the designated switch with a redundant link to the segment for which the switch is designated. A disabled port has a higher port ID than the disabled port on the designated switch. The disabled port assumes the discarding state in astable active topology. C . The backup port is a switch port that offers an alternate path toward the root bridge. The backup port assumes a discarding state in a stable， active topology. The backup port will be present on nondesignated switches and will make a transition to a designated port if the current designated path fails. D . The root port is the switch port on every nonroot bridge that is the chosen path to the root bridge. There can be only one root port on every switch. The root port assumes the forwarding state in a stable active topology.

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• Which three port states are used by RSTP 802.1w？ （）

  A . Listening B . Learning C . Forwarding D . Blocking E . Discarding F . Disabled

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• Refer to the exhibit. In the diagram, the switches are running IEEE 802.1s MST. Which ports are in the MST blocking state?（）https://assets.asklib.com/images/image2/2018072317220752705.jpg

  A . GE-1/2 and GE 2/1 B . GE-1/1 and GE-2/2 C . GE-3/2 and GE 4/1 D . no ports are in the blocking state E . There is not enough information to determine which ports are in the blocking state

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• Which of the following are spanning tree port states?（）

  A . Learning B . Spanning C . Listening D . Forwarding E . Initializing F . Filtering G . Permitting

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• Which two states are the port states when RSTP has converged？（）

  A . blocking B . learning C . disabled D . forwarding E . listening

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• Which three flow-control port states lead to enabled link flow control？ （）

  A .  Receive port： Enabled， Transmit port： Enabled B .  Receive port： Enabled， Transmit port： Desired C .  Receive port： Enabled， Transmit port： Disabled D .  Receive port： Disabled， Transmit port： Desired E .  Receive port： Desired， Transmit port： Desired

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• Each port that is configured to use LACP has an LACP port priority. Which statements are true about LACP port priority？ （）

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• Which three port states are used by RSTP 802.1w？（）

  A . Listening B . Learning C . Forwarding D . Blocking E . Discarding F . Disabled

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• 4．Which of the following is implied but not stated？

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• Which of the following is NOT true of the United States？

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