地上层 aerial layer
地上层 aerial layer
相关考题：
A host computer has been correctly configured with a static IP address, but the default gateway is incorrectly set. Which layer of the OSI model will be first affected by this configuration error?A. Layer 1B. Layer 2C. Layer 3D. Layer 4E. Layer 5F. Layer 6E. Layer 7
Which OSI layer is associated with the following: The acknowledgement of transmissions, sequencing, and flow control across a network?A. Layer 2B. Layer 3C. Layer 4D. Layer 5E. Layer 6F. Layer 7
Acknowledgements, sequencing, and flow control are functions that are handled by which layer of the OSI model?A. Layer 5B. Layer 4C. Layer 7D. Layer 6E. Layer 3F. Layer 2G. Layer 1
● TCP/IP communication protocol contains four layers. From bottom to top, the four layers are __(71)__.（71）A．network interface layer, internet layer, transport layer and application layerB．internet layer, network interface layer, transport layer and application layerC．network interface layer, transport layer, network interface layer and application layerD．application layer, transport layer, internet layer and network interface layer
At which layer of the OSI model does error checking occur with IPv6?() A. Layer 2B. Layer 3C. Layer 4D. Layer 7
TCP/IP communication protocol contains four layers． From bottom to top, the four layers are __（71）__．A.network interface layer, internet layer, transport layer and application layerB.internet layer, network interface layer, transport layer and application layerC.network interface layer, transport layer, network interface layer and application layerD.application layer, transport layer, internet layer and network interface layer
Which of the following layers of the OSI model is the presentation layer?() A.Layer 1B.Layer 5C.Layer 6D.Layer 7
In the 7－layer OSI model, which layer switching will take place?() A.Layer twoB.Layer fourC.Layer oneD.Layer three
AtwhichlayeroftheOSImodeldoestheSpanningTreeProtocol(STP)operateat?() A.Layer5B.Layer4C.Layer3D.Layer2E.Layer1
Which two practices will avoid Cisco Express Forwarding polarization?() A. The core layer should use default Layer 3 hash information.B. The core layer should use default Layer 4 hash information.C. The distribution layer should use default Layer 3 hash information.D. The distribution layer should use default Layer 4 hash information.E. The core layer should use Layer 3 and Layer 4 information as input to the Cisco Expressing Forwarding hashing algorithm.F. The distribution layer should use Layer 3 and Layer 4 information as input into the Cisco Expressing Forwarding hashing algorithm.
WhichroamingoptionwillkeepthemonthesameIPsubnetwhenclienttrafficisbeingbridged throughLANinterfacesontwoWLCs?() A.Layer1intercontrollerroamingB.Layer2intercontrollerroamingC.Layer3intercontrollerroamingD.Layer4intercontrollerroaming
WhichheaderorsetofheadersdoesCRTPcompress?() A.Layer2B.Layer3C.Layer4D.Layer2andLayer3E.Layer3andLayer4
Acknowledgements,sequencing,andflowcontrolarecharacteristicsofwhichOSIlayer?() A.Layer2B.Layer3C.Layer4D.Layer5E.Layer6F.Layer7
Acknowledgements, sequencing, and flow control are characteristics of which OSI layer()。 A.Layer2B.Layer3C.Layer4D.Layer5E.Layer6F.Layer7
Acknowldgement, Sequencing, and Flow control are characteristics of which OSI layer?（）A、Layer 2B、Layer 3C、Layer 4D、Layer 5E、Layer 6F、Layer 7
In the 7-layer OSI model, which layer switching will take place?（）A、Layer twoB、Layer fourC、Layer oneD、Layer three
Which statement about data center access layer design modes is correct?（）A、The access layer is the first oversubscription point in a data center design.B、When using a Layer 2 loop-free design, VLANs are extended into the aggregation layer.C、When using a Layer 2 looped design, VLANs are not extended into the aggregation layer.D、When using a Layer 3 design,stateful services requiring Layer 2 connectivity are provisioned from the aggregation layer.E、The data center access layer provides the physical-level connections to the server resources and only operates at Layer 3.
At which layer of the OSI model does the Spanning Tree Protocol （STP） operate at？（）A、Layer 5B、Layer 4C、Layer 3D、Layer 2E、Layer 1
Which header or set of headers does CRTP compress？ （）A、Layer 2B、Layer 3C、Layer 4D、Layer 2 and Layer 3E、Layer 3 and Layer 4
Where is the MPLS label imposed？（）A、after the Layer 3 header and before the Layer 2 payloadB、after the Layer 3 header and before the Layer 4 payloadC、after the Layer 2 header and before the Layer 1 payloadD、after the Layer 1 header and before the Layer 2 payloadE、after the Layer 2 header and before the Layer 3 payload
Which OSI layer is associated with the following: The acknowledgement of transmissions, sequencing, and flow control across a network?（）A、Layer 2B、Layer 3C、Layer 4D、Layer 5E、Layer 6F、Layer 7
Acknowledgements, sequencing, and flow control are characteristics of which OSI layer（）。A、Layer2B、Layer3C、Layer4D、Layer5E、Layer6F、Layer7
At which layer of the OSI model does error checking occur with IPv6?（）A、Layer 2B、Layer 3C、Layer 4D、Layer 7
单选题In a frame ，the MPLS label is imposed（）.AAfter the Layer3 header and before Layer2 headerBAfter the Layer2 header and before Layer3 headerCWithin the Layer 3 headerDBefore the layer 2 header
单选题Where is the MPLS label imposed？（）Aafter the Layer 3 header and before the Layer 2 payloadBafter the Layer 3 header and before the Layer 4 payloadCafter the Layer 2 header and before the Layer 1 payloadDafter the Layer 1 header and before the Layer 2 payloadEafter the Layer 2 header and before the Layer 3 payload