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A receiving host computes the checksum on a frame and determines that the frame is damaged.Theframe is then discarded.At which OSI layer did this happen?()
A.session
B.network
C.physical
D.datalink
E.transport
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Which of the following correctly describe steps in the OSI data encapsulation process?()
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A receiving host computes the checksum on a frame and determines that the frame is damaged.The frame is then discarded.At which OSI layer did this happen?()
A. sessionB. networkC. physicalD. data linkE. transport
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Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN?()
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A receiving host computes the checksum on a frame and determines that the frame is damaged.The frame is then discarded.At which OSI layer did this happen?（）A、sessionB、networkC、physicalD、data linkE、transport
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Which WAN service utilizes two different encapsulation types (one for data and one for signaling) on its data link layer?（）A、ISDNB、Frame RelayC、ATMD、FDDI
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At which OSI layer is a logical path created between two host systems（）。A、sessionB、transportC、networkD、data linkE、physical
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Two Company switches are connected via a trunk link. In this network， the original frame is encapsulated and an additional header is added before the frame is carried over a trunk link. At the receiving end， the header is removed and the frame is forwarded to the assigned VLAN. This describes which technology？（）A、 DISLB、 ISLC、 DTPD、 IEEE 802.1QE、 MPLSF、 None of the other alternatives apply
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If a switch is working in the fail-open mode， what will happen when the switch’s CAM table fills to capacityand a new frame arrives？（）A、A copy of the frame is forwarded out all switch ports other than the port the frame was received on.B、The frame is transmitted on the native VLAN.C、The switch sends a NACK segment to the frame’s source MAC address.D、The frame is dropped.
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A receiving host computes the checksum on a frame and determines that the frame is damaged.Theframe is then discarded.At which OSI layer did this happen？（）A、sessionB、networkC、physicalD、data linkE、transport
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Which layer in the OSI reference model is responsible for determining the availability of the receiving program and checking to see if enough resources exist for that communication?（）A、transportB、networkC、presentationD、sessionE、application
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Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN? （）A、HDLCB、EthernetC、Token RingD、PPPE、FDDIF、Frame Relay
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What does a Layer 2 switch do if it receives a frame with a destination MAC address that is not found in its MAC address table?（）A、The frame is dropped.B、The frame is addressed with a broadcast MAC address and sent out all ports.C、The frame is sent out all ports except the receiving port.D、An ARP request is sent out all ports except the receiving port.E、A destination unreachable message is sent back to the source address.F、None of the above.
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单选题when a user clicks a link in the left frame of the Review application, the linked data displays in the frame on the right. What did Kristin to do allow this to happen?（）A
entered the name of the target frame in hotspot propertiesB
entered the name of the target in frameset propertiesC
entered the position of the target frame in frame propertiesD
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多选题Which of the following correctly describe steps in the OSI data encapsulation process?（）ATransport layer divides a data stream into segments adds reliability flow control informationBData link layer adds physical source destination address an FCS to the segmentCPackets are created when the network layer encapsulate a frame with source destination host address protocol related control informationDPackets are created when the network layers adds layers 3 address control information to a segmentEThe presentation layer translated bits into bits into voltages for transmission across the physical link
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单选题A receiving host computes the checksum on a frame and determines that the frame is damaged.Theframe is then discarded.At which OSI layer did this happen？（）A
sessionB
networkC
physicalD
data linkE
transport
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单选题At Layer 2 of the OSI model, which component connects a host to the network media?（）A
HubB
SwitchC
BridgeD
NICE
Transceiver
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单选题Which statement describes multihop FCoE function when an FCoE switch receives an FCoE frame from the directly connected FCoE host？（）A
The switch receives the FCoE frame and forwards it to another switch over its VE port.B
The switch receives the FCoE frame， deapsulates it， and sends the Fibre Channel frame to the fabric over its Fibre Channel uplink port.C
The switch receives the FCoE frame， deapsulates it， and sends the Fibre Channel frame to the Fibre Channel target over its Fibre Channel port.D
The switch receives the FCoE frame and forwards it to another FCoE device over its VN port.
考题
单选题A receiving host computes the checksum on a frame and determines that the frame is damaged.Theframe is then discarded.At which OSI layer did this happen?（）A
sessionB
networkC
physicalD
datalinkE
transport
考题
多选题Which of the following correctly describe steps in the OSI data encapsulation process?（）AThe transport layer divides a data stream into segments and may add reliability and flow control information.BThe data link layer adds physical source and destination addresses and an FCS to the segment.CPackets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information.DPackets are created when the network layer adds Layer 3 addresses and control information to a segment.EThe presentation layer translates bits into voltages for transmission across the physical link.
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单选题R1 forwards a packet from Host 1 to remote Server 1. Which statement describes the use of a MAC as the frame carrying this packet leaves the s0/0/0 interface of R1（）。A
The frame does not have MAC addresses.B
The source MAC address in the frame is the MAC address of the NIC of Host 1.C
The source MAC address in the frame is the MAC address of the s0/0/0 interface of R1.D
The destination MAC address in the frame is the MAC address of the NICof server 1.E
The destination MAC address in the frame is the MAC address of the s0/0/0 interface of R2
考题
单选题If a switch is working in the fail-open mode， what will happen when the switch’s CAM table fills to capacityand a new frame arrives？（）A
A copy of the frame is forwarded out all switch ports other than the port the frame was received on.B
The frame is transmitted on the native VLAN.C
The switch sends a NACK segment to the frame’s source MAC address.D
The frame is dropped.
考题
单选题At which OSI layer is a logical path created between two host systems?（）A
sessionB
transportC
networkD
data linkE
physical
考题
单选题A receiving host computes the checksum on a frame and determines that the frame is damaged.The frame is then discarded.At which OSI layer did this happen?（）A
sessionB
networkC
PhysicalD
data linkE
Transport
考题
单选题Which layer in the OSI reference model is responsible for determining the availability of the receiving program and checking to see if enough resources exist for that communication? （）A
transportB
networkC
presentationD
sessionE
application
考题
单选题Two Company switches are connected via a trunk link. In this network， the original frame is encapsulated and an additional header is added before the frame is carried over a trunk link. At the receiving end， the header is removed and the frame is forwarded to the assigned VLAN. This describes which technology？（）A
DISLB
ISLC
DTPD
IEEE 802.1QE
MPLSF
None of the other alternatives apply
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