In IPv6, the Address Resolution Protocol (ARP) is not used. Instead, IPv6 uses the Neighbor Discovery Protocol (NDP), which is part of the ICMPv6 suite. NDP handles address resolution, router discovery, and reachability.
MTCNA Course Material – IPv6 Address Resolution:
“IPv6 replaces ARP with Neighbor Discovery Protocol. NDP uses ICMPv6 to perform tasks like address resolution and router discovery.”
René Meneses MTCNA Study Guide – IPv6 Fundamentals:
“There is no ARP in IPv6. It uses NDP messages for neighbor solicitation and advertisement.”
Thus, ARP is not used in IPv6.
Final Answer: AQUESTION NO: 152 [Monitoring and Management – SNMP Protocol]
Which of the following protocols / ports are used for SNMP (Simple Network Management Protocol)?
A. TCP 162
B. UDP 162
C. UDP 161
D. TCP 25
E. TCP 123
F. TCP 161
Answer: B, C
SNMP uses the following ports:
UDP 161: Used for SNMP agent queries (GET, SET, etc.)
UDP 162: Used by SNMP managers to receive trap notifications
MTCNA Course Material – SNMP and Monitoring:
“SNMP uses UDP 161 for polling devices and UDP 162 for traps.”
MikroTik Wiki – SNMP:
“SNMP communication uses UDP ports 161 (queries) and 162 (traps). TCP is not used for SNMP by default.”
Option breakdown:
A: TCP 162 → incorrect (SNMP traps use UDP)
B:✔UDP 162
C:✔UDP 161
D: TCP 25 = SMTP
E: TCP 123 = NTP (incorrect protocol and transport)
F: TCP 161 = incorrect transport
Final Answer: B, CQUESTION NO: 153 [ARP – MikroTik Specific Behavior]
If arp=reply-only is configured on an interface, what will this interface do?
A. Accept all IP/MAC combinations listed in /ip arp as static entries
B. Accept all IP addresses listed in /ip arp as static entries
C. Add new MAC addresses in /ip arp list
D. Accept all MAC addresses listed in /ip arp as static entries
E. Add new IP addresses in /ip arp list
Answer: A
Setting arp=reply-only on an interface disables the normal dynamic ARP process. The router will only respond to ARP requests for IP/MAC pairs that are explicitly listed in /ip arp with type=static. No dynamic entries will be added.
MikroTik Wiki – ARP Modes:
“reply-only – the interface will only reply to ARP requests if there is a static entry. It will not add any new entries.”
MTCNA Course Material – ARP Configuration:
“When reply-only is set, the interface will not send ARP requests and will only respond to those IP/MAC combinations configured as static entries.”
Option breakdown:
A:✔Correct—replies only to statically configured IP/MAC pairs
B: Incorrect — ARP entries must have both IP and MAC
C/E: No new dynamic entries are added in reply-only mode
D: MAC addresses alone are not matched — ARP matches IP/MAC pairs
Final Answer: AQUESTION NO: 154 [RouterOS Tools – Configuration Export]
Mark all correct statements about /export (rsc file).
A. Exports logs from /log print
B. Exports full configuration of the router
C. Exports only part of the configuration (for example /ip firewall)
D. Exports scripts from /system script
E. Exported files could not be edited
Answer: B, C, D
The /export command in RouterOS allows exporting configuration as a script (.rsc file). It can:
Export the full configuration
Export a specific section (e.g., /ip firewall)
Include scripts under /system script if specified
It does not export logs and the exported .rsc file is plain text and can be edited.
MTCNA Course Material – Configuration Management:
“/export outputs configuration to a text file. You can export the full config or a specific menu, and it includes scripts if present.”
MikroTik Wiki – Export Command:
“You can use /export to generate editable .rsc files. Use /export file=name or /ip firewall export.”
Option breakdown:
A:❌Logs are not exported
B:✔Full config export is default
C:✔You can target specific sections (e.g., /ip dhcp-server)
D:✔Scripts are included if present
E:❌Exported files are editable text files
Final Answer: B, C, D
