When does a switch flood the network with a frame?When there is no MAC address associated with a switch port in the forward/filter tableWhen the frame uses the UDP protocolWhen it does not know the destination IP addressFor every frame
Question
When does a switch flood the network with a frame?When there is no MAC address associated with a switch port in the forward/filter tableWhen the frame uses the UDP protocolWhen it does not know the destination IP addressFor every frame
Solution
A switch floods the network with a frame in the following situations:
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When there is no MAC address associated with a switch port in the forward/filter table: If the switch does not have the destination MAC address in its MAC address table, it will flood the frame out of all ports except the one it was received on.
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When it does not know the destination IP address: Switches operate at the data link layer (Layer 2) of the OSI model and do not understand IP addresses. They only understand MAC addresses. So, if a switch does not know the destination MAC address, it will flood the frame.
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For every frame: This is not entirely correct. A switch does not flood every frame. It only floods the frame when it does not know the destination MAC address. If it knows the destination MAC address, it will forward the frame only to the specific port.
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When the frame uses the UDP protocol: This is not correct. The protocol (TCP or UDP) used by the frame does not affect whether a switch floods the frame or not. The switch's decision to flood or not is based on the destination MAC address.
Similar Questions
What action will occur if a switch receives a frame and does have the source MAC address in the MAC table? Group of answer choicesThe switch refreshes the timer on that entry.The switch sends the frame to a connected router because the destination MAC address is not local.The switch does not forward the frame.The switch shares the MAC address table entry with any connected switches
Refer to the exhibit. The exhibit shows a small switched network and the contents of the MAC address table of the switch. PC1 has sent a frame addressed to PC3. What will the switch do with the frame?Group of answer choicesThe switch will discard the frame.The switch will forward the frame to all ports.The switch will forward the frame only to port 2.The switch will forward the frame only to ports 1 and 3.The switch will forward the frame to all ports except port 4.
What happens if a unicast frame enters a switch interface over a transmission medium A. The switch searches the MAC address table for the destination MAC address of the frame. B. The switch floods the unicast frame. C. The switch forwards the frame to the interface corresponding to the destination MAC address of the frame in the MAC address table. D. The switch discards the frame.
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What action will occur if a host receives a frame with a destination MAC address it does not recognize? Group of answer choicesThe host will discard the frame.The host sends the frame to the switch to update the MAC address table.The host forwards the frame to the router.The host forwards the frame to all other hosts.
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