24. $ 1s -1 useri user1 150 Mar 19 19:38 file1 rw-rw-rw useri userl 42 Feb 12 09:15 file2 rwxrruser1 useri 29 Jan 1 01:45 file3 drwxr-xr-x 8 pts] useri userl 29 Mar 21 12:58 mydir Why would the following command fail to execute? a. rm file1 b. Which of the entries in the listing is an executable file? c. Who has permission to execute the file in part b? d. Show the permissions for file2 after executing the following chmod go-r+x file2 25. The following packet trace is the result of a DHCP message exchange. Source Destination Info 255.255.255.255 DHCP Discover Transaction ID 0xcb9d56 -Transaction ID excb9d56 255.255.255.255 DHCP Request- Transaction ID excb9d56 - Transaction ID excb9d56 2192.168. 2.10? 255.255.255.255 DHCP0ffer 4 192.168.2.100 255.255.255.255 DHCP ACK a. What is the purpose of packet 1? b. What is the purpose of packet 2? c. why is ?.0.0.0 the Source IP address of packets of 1 and 3? d. Suppose the client received IP address 192.168.2.39. Provide the Source, Destination, 8 pts) and Info for the packet that the client would send to renew its IP address lease. Source Destination Info - Transaction ID 0xd690a!5