4. Refer to the following network diagram. The letter id's refers to the layer 3 address (equivalent to an IP address), the number id's refer to the layer 2 addresses (equivalent to an MAC address). Host 1 sends a frame to Host 2 as illustrated with the red arrow Host 1 A/37 LAN 1 (DTE) a) (6%) Fill in the table below: Layer 2 Layer 3 C/44 Layer 2 Layer 3 Source Address Router 1 Source Address LAN 1 E/66 Destination Address LAN 2 (DTE) Destination Address Source Address LAN 2 H/16 Router 2 Destination Address Q/41 Source Address LAN 3 (DTE) X/53 LAN 3 b) (2%) Suppose Router 1 is replaced with a L2 Switch. What are the L2 and L3 addresses of the frame egressing out of Host 1 (fill in the table below)? Frame egressing Destination Address Host 2