Which two statements about the purpose of the OSI model are accurate? (Choose two)
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収録の一覧（サンプル2/12問）
問1Which two statements about the purpose of the OSI model are accurate? (Choose two)答え・解説を見る
A.Defines the network functions that occur at each layer
B.Facilitates an understanding of how information travels throughout a network
C.Changes in one layer do not impact other layer
D.Ensures reliable data delivery through its layered approach
答えDefines the network functions that occur at each layer / Facilitates an understanding of how information travels throughout a network
問2What is the default behavior of a Layer 2 switch when a frame with an unknown destination MAC address is received?答え・解説を見る
A.The Layer 2 switch drops the received frame
B.The Layer 2 switch floods packets to all ports except the receiving port in the given VLAN
C.The Layer 2 switch sends a copy of a packet to CPU for destination MAC address learning
D.The Layer 2 switch forwards the packet and adds the destination MAC address to Its MAC address table
答えThe Layer 2 switch floods packets to all ports except the receiving port in the given VLAN
解説If the destination MAC address is not in the CAM table (unknown destination MAC address), the switch sends the frame out all other ports that are in the same VLAN as the received frame. This is called flooding. It does not flood the frame out the same port on which the frame was received.