A computer with the IP address $10\mathrm{.}8\mathrm{.}8\mathrm{.}5/24$ tries to ping $10\mathrm{.}8\mathrm{.}8\mathrm{.}8.$ An ARP request will be sent out first. What are the values of the following fields in the ARP message: $(1)$sender$$sMAC$,(2)$sender$$sIP$,(3)$targetMAC$,$and$(4)$targetIP$?$