Switched Network X Frame X Packet Switch X3 Data Link Host A A-R1 Host C Physical Link (A-X1) Switch X4 Switched Network Y Switch X1 Router R1 Switch X2 Route A-B Data Link R1-22 Packet Frame Y Switohed Network Z Switch Z1 Router R2 Host B Packet Frame z Switch 22 Data Link R2-B Switch 23 Host E Switch 24 Host D Router R3 1-3. A frame is addressed to the data link layer (DLL) address of the device at the end of the frame's data link. The packet is addressed to the IP address of the host at the end of the packet's route. a) When Host C in the above Figure transmits a packet to Host D, to which address is the first frame addressed (be specific)? (Hint. It is the DLL address of the interface (port) on Router R1 that receives the frame.) b) To which address is the packet addressed? c) When router R1 sends the packet along in a Frame to Router R2, to which address is the frame addressed? d) To which address is the packet addressed