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.
相似题目
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Which statement about Cisco Unified Fabric switches is correct？ （）
A . The Nexus 5000 family of switches does not support vPC when running in either NPV or FCoE NPV mode.
B . The MDS 9100 family of switches is an excellent design choice as a Unified Fabric edge switch.
C . The Nexus 7000 Series Switches can support the NPIV mode of operation， but cannot function as a complete Fibre Channel Forwarder.
D . The Nexus 7000 Series Switches cannot support advanced Cisco Fibre Channel features such as IVR.
E . The MDS family of Cisco Unified Fabric switches supports both the Fibre Channel Forwarder and Fibre Channel Bridge functions.
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Which of the following statements is correct?
A . A rich country gets benefits through trade at the expense of its poor country trading partners
B . A poor country gets benefits through trade at the expense of its rich country trading partners
C . In trade one side or the other must lose because the benefits must come from somewhere.
D . In trade it is possible for every part involved winning at the expense of nobody
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Which statement about Fibre Channel communications is correct?（）
A . It operates much like TCP.
B . Flow control is only provided by QoS.
C . It must be implemented in an arbitrated loop.
D . Communication methods are similar to those of an Ethernet bus.
E . N_Port to N_Port connections use logical node connection points.
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Which statement is correct regarding NBAR and NetFlow？（）
A . NetFlow uses five key fields for the flow
B . NBAR examines data in Layers 3 and 4
C . NetFlow examines data in Layers 3 and 4
D . NBAR examines data in Layers 2 through 4
E . NetFlow examines data in Layers 2 through 4
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Which statement about Fibre Channel communications is correct？（）
A . It operates much like TCP.
B . Flow control is only provided by QoS.
C . It must be implemented in an arbitrated loop.
D . Communication methods are similar to those of an Ethernet bus.
E . N_Port to N_Port connections use logical node connection points.
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Which MST configuration statement is correct？ （）
A . MST configurations can be propagated to other switches using VTP.
B . After MST is configured on a Switch， PVST+ operations will also be enabled by default.
C . MST configurations must be manually configured on each switch within the MST region.
D . MST configurations only need to be manually configured on the Root Bridge.
E . MST configurations are entered using the VLAN Database mode on Cisco Catalyst switches.
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Among the following statements, which is not correct?（ ）
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Which statement is correct? ( )
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About English intonation, which statement is not correct?
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Which statement is correct?
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Which of the following statements is CORRECT？
A．Filial responsibility in Singapore is enforced by law.
B．Fathers have legal obligations to look after their children.
C．It is an acceptable practice for the old to continue working.
D．The Advisory Council was dissatisfied with the problems of the old.
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Which statement about fiber loading is not correct？
A．the amount of reinforcement in a composite material
B．is expressed in volume fraction
C．a factor influencing the composite
D．the strength of the composite is inversely proportional to the volume fraction of fiber present
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Which statement of elastic modulus is NOT correct？
A) Elastic modulus is also known as Young&39;s modulus
B) The higher the magnitude ofelastic modulus the weaker the interatomic bonding forces
C) Elastic modulus is the constant ofproportionality in Hooke&39;s law
D) Elastic modulus can be measured graphically in the elastic region ofthe stress-strain diagram
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Which of the following statements is correct？ （)
A、All items that are included in M1 are included also in M2.
B、All items that are included in M2 are included also in M1.
C、Credit cards are included in both M1 and M2.
D、Savings deposits are included in both M1 and M2.
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Which of the following statements is correct？
A．In the UK, a million cars are stolen daily.
B．In the UK, there are amateur car thieves only.
C．There are more car crimes than any other type of offences.
D．One in ten drivers invites car theft due to carelessness.
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Which statement is CORRECT concerning Dr. Zelda Teplitz？
A．He studies sleepwalking for at least ten years.
B．He concludes that sleepwalkers are totally asleep in their sensory area.
C．He maintains that it is a mistaken belief that sleepwalkers are immune to injury.
D．He is the leading expert on sleep in America.
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Which statement is not correct about “unity”？
A、Unity means oneness.
B、Unity means each sentence in the paragraph should clearly related to and support the main point, as expressed in the topic sentence.
C、Your paragraph should exclude any ideas that are irrelevant to the main point.
D、Your paragraph should include as many ideas as possible.
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Which statement about ethanol is correct（）
A．AIt burns in air to form ethene and water
B．BIt is prepared from ethene by fermentation
C．CIt is prepared from glucose in an addition reaction
D．DIt is the only product when ethene reacts with steam
