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What will an Ethernet switch do if it receives a unicast frame with a destination MAC that is listed in the switch table?（）
- A、The switch will not forward unicast frames.
- B、The switch will forward the frame to a specific port.
- C、The switch will return a copy of the frame out the source port.
- D、The switch will remove the destination MAC from the switch table.
- E、The switch will forward the frame to all ports except the port on which it was received.
参考答案
更多 “What will an Ethernet switch do if it receives a unicast frame with a destination MAC that is listed in the switch table?（）A、The switch will not forward unicast frames.B、The switch will forward the frame to a specific port.C、The switch will return a copy of the frame out the source port.D、The switch will remove the destination MAC from the switch table.E、The switch will forward the frame to all ports except the port on which it was received.” 相关考题
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What are two characteristics of "store and forward" switching? (Select two answer choices)A．Latency fluctuates regardless of frame. size.B．The switch receives the complete frame. before beginning to forward it.C．Latency through the switch varies with frame. length.D．The switch checks the destination address upon receipt of headers.
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A Ezonexam Ethernet switch receives a unicast frame. with a destination MAC that is listed in the switch table. What will this switch do with the frame?A. The switch will forward the frame. to a specific portB. The switch will forward the frame. to all ports except the port on which it was receivedC. The switch will return a copy of the frame. out the source portD. The switch will not forward unicast framesE. The switch will remove the destination MAC from the switch tableF. None of the above.
考题
What information is used by a switch to forward an Ethernet frame to its destination?()
A. IP addressB. destination MAC addressC. ARP table entryD. FCS checksum
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What are two results of entering the Switch(config) vtp mode client command on a Catalyst switch?()
A. The switch will ignore VTP summary advertisementsB. The switch will forward VTP summary advertisementsC. The switch will process VTP summary advertisementsD. The switch will originate VTP summary advertisementsE. The switch will create, modify and delete VLANs for the entire VTP domain
考题
What does a Layer 2 switch use to decide where to forward a received frame?()
A. source MAC addressB. source IP addressC. source switch portD. destination IP addressE. destination port addressF. destination MAC address
考题
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.
考题
Which of the following are true regarding bridges and switches?()
A. Bridges are faster than switches because they have fewer ports.B. A switch is a multiport bridge.C. Bridges and switches learn MAC addresses by examining the source MAC address of each frame received.D. A bridge will forward a broadcast but a switch will not.E. Bridges and switches increase the size of a collision domain.
考题
Refer to the exhibit A frame on vlan 1 on switch s1 is sent to switch s2 when the frame is received on vlan 2,what causes this behavior?()
A.trunk mode mismatchesB.vlans that do not correspond to a unique IP subnetC.native vlan mismatchesD.allowing only vlan 2 on the destination.
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Refer to the exhibit.Switch－1 needs to send data to a host with a MAC address of 00b0.d056.efa4.What will Switch－1 do with this data?()
A.switch-1 will drop the data because it dose not have an entry for that MAC addressB.switch-1 will flood the data out all of its port from which the data originatedC.switch-1 will forward the data to its default gatewayD.tch-1 will send an ARP request out all its ports except the port from which the data originated
考题
What will an Ethernet switch do if it receives a unicast frame with a destination MAC that is listed in the switch table()。
A.The switch will not forward unicast frames.B.The switch will forward the frame to a specific port.C.The switch will return a copy of the frame out the source port.D.The switch will remove the destination MAC from the switch table.E.The switch will forward the frame to all ports except the port on which it was received.
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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
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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ISL is being configured on a Company switch. Which of the following choices are true regarding the ISL protocol？ （）A、 It can be used between Cisco and non-Cisco switch devices.B、 It calculates a new CRC field on top of the existing CRC field.C、 It adds 4 bytes of protocol-specific information to the original Ethernet frame.D、 It adds 30 bytes of protocol-specific information to the original Ethernet frame.
考题
What information is used by a switch to forward an Ethernet frame to its destination?（）A、IP addressB、destination MAC addressC、ARP table entryD、FCS checksum
考题
What does a Layer 2 switch use to decide where to forward a received frame?（）A、source MAC addressB、source IP addressC、source switch portD、destination IP addressE、destination port addressF、destination MAC address
考题
What are two results of entering the Switch(config)# vtp mode client command on a Catalyst switch?（）A、The switch will ignore VTP summary advertisements.B、The switch will forward VTP summary advertisements.C、The switch will process VTP summary advertisements.D、The switch will originate VTP summary advertisements.E、The switch will create, modify and delete VLANs for the entire VTP domain.
考题
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 updatesB、a flapping port that is generating BPDUs with the TCN bit setC、STP is not running on the switchD、a user that is downloading the output of the show-tech commandE、a corrupted switch CAM table
考题
Refer to the exhibit A frame on vlan 1on switch s1 is sent to switch s2 when the frame is received on vlan 2,what causes this behavior?（）A、trunk mode mismatchesB、vlans that do not correspond to a unique IP subnetC、native vlan mismatchesD、allowing only vlan 2 on the destination.
考题
What are two results of entering the Switch(config)# vtp mode client command on a Catalyst switch?（）A、The switch will ignore VTP summary advertisementsB、The switch will forward VTP summary advertisementsC、The switch will process VTP summary advertisementsD、The switch will originate VTP summary advertisementsE、The switch will create, modify and delete VLANs for the entire VTP domain
考题
What are two characteristics of "store and forward" switching?（）A、Latency fluctuates regardless of frame size.B、The switch receives the complete frame before beginning to forward it.C、Latency through the switch varies with frame length.D、The switch checks the destination address upon receipt of headers.
考题
单选题Refer to the exhibit A frame on vlan 1 on switch s1 is sent to switch s2 when the frame is received on vlan 2,what causes this behavior?（）A
trunk mode mismatchesB
vlans that do not correspond to a unique IP subnetC
native vlan mismatchesD
allowing only vlan 2 on the destination.
考题
单选题What will an Ethernet switch do if it receives a unicast frame with a destination MAC that is listed in the switch table?（）A
The switch will not forward unicast frames.B
The switch will forward the frame to a specific port.C
The switch will return a copy of the frame out the source port.D
The switch will remove the destination MAC from the switch table.E
The switch will forward the frame to all ports except the port on which it was received.
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 updatesB
a flapping port that is generating BPDUs with the TCN bit setC
STP is not running on the switchD
a user that is downloading the output of the show-tech commandE
a corrupted switch CAM table
考题
单选题What information is used by a switch to forward an Ethernet frame to its destination?（）A
IP addressB
destination MAC addressC
ARP table entryD
FCS checksum
考题
单选题What dose a Layer 2 switch use to decide where to forward a received frame?（）A
source MAC addressB
source IP addressC
source switch portD
destination IP addressE
destination port addressF
destination MAC address
考题
多选题What are two characteristics of "store and forward" switching?（）ALatency fluctuates regardless of frame size.BThe switch receives the complete frame before beginning to forward it.CLatency through the switch varies with frame length.DThe switch checks the destination address upon receipt of headers.
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