Refer to the exhibit. Router1 is running IOS version 12.2. What will the network administrator need to do so that packets for unknown child routes of 172.16.0.0/24 will not be dropped? | CCNA

     A.    issue the ip default-network command
     B.    use a classful routing protocol such as RIPv1
     C.    enable either OSPF or ISIS as the routing protocol
     D.    issue the ip classless command
     E.    do nothing, ip classless is on by default

ANS: E