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. source MAC address

B. source IP address

C. source switch port

D. destination IP address

E. destination port address

F. destination MAC address

A. to uniquely identify devices at Layer 2

B. to allow communication with devices on a different network

C. to differentiate a Layer 2 frame from a Layer 3 packet

D. to establish a priority system to determine which device gets to transmit first

E. to allow communication between different devices on the same network

F. to allow detection of a remote device when its physical address is unknown

A.Layer 1 on the interface is up but Layer 2 is down.

B.Layer 2 on the interface is up but Layer 3 has not been configured.

C.The interface is administratively up but the link status is down.

D.The interface is up but has been administratively turned off.

A.to uniquely identify devices at Layer 2

B.to allow communication with devices on a different network

C.to differentiate a Layer 2 frame from a Layer 3 packet

D.to establish a priority system to determine which device gets to transmit first

E.to allow communication between different devices on the same network

F.to allow detection of a remote device when its physical address is unknown

A.The PC has connectivity with a local host.

B.The PC has connectivity with a Layer 3 device.

C.The PC has a default gateway correctly configured

D.The PC has connectivity up to Layer 5 of the OSI model

E.The PC has the TCP/IP protocol stack correctly installed.

A.An onion peeled off one layer after another.

B.A man walking upstairs step by step.

C.Ice melting and dripping from above.

D.Water rippling from a center.

A. The PC has connectivity with a local host.

B. The PC has connectivity with a Layer 3 device.

C. The PC has a default gateway correctly configured

D. The PC has connectivity up to Layer 5 of the OSI model

E. The PC has the TCP/IP protocol stack correctly installed.

A.The PC has connectivity with a local host.

B.The PC has connectivity with a Layer 3 device.

C.The PC has a default gateway correctly configured.

D.The PC has connectivity up to Layer 5 of the OSI model.

E.The PC has the TCP/IP protocol stack correctly installed.

A.Layer 2

B. Layer 3

C. Layer 4

D. Layer 7

A.All generations of Ethernet base on the same architecture formats and the same interfaces for higher layers.

B.All generation of Ethernet conform to the multi-layers structure of the OSI reference model.

C.All generations of Ethernet are built on improving infrastructure from coaxial cable to twisted pair.

D.All generations of Ethernet base on the same physical layer as the underlying frame.