Frame X Packet Switch X3 Host A Data Link A-R1 Host C Physical Link (A-X1) Switched Network Y Switch X4 Switch X1 Router R1 Switch X2 Route A-B Data Link R1-R2 Packet Frame Y Switched Network z Switch Z1 Router R2 Packet Frame Z Host B Switch 22 Data Link R2-B Switch Z3 Host E Switch 24 Hast D Router R3 1-2. a) When Host A in the above Figure transmits a packet to Host C, how many physical links, data links, and routes will there be? b) How many packets will there be? c) How many frames