A.Write a script in '/system script' to set the clock

B.Configure '/system ntp server' and set a valid and reachable NTP client address.

C.Open the router and ensure the CMOS battery is fine.

D.Configure '/system ntp client' and set a valid and reachable NTP server address.

A.add new IP addresses in '/ip arp' list

B.accept IP and MAC address combinations listed in '/ip arp' list

C.accept all IP addresses listed in '/ip arp' as static entries

D.accept all MAC-addresses listed in '/ip arp' as static entries

E.add new MAC addresses in '/ip arp' list

A.PPP clients

B.PPtP clients

C.PPPoE clients

D.Router users

E.IPSec clients

F.L2TP clients

A.UDP - trace route

B.IP

C.ICMP - ping

D.TCP

E.DHCP

A.Transport

B.Application

C.Presentation

D.Session