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MikroTik Certification
MTCNA Exam
MikroTik.MTCNA.v2026-01-06.q150 Dumps

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Question 31

Destination NAT (chain dstnat, action dst-nat) can be used to:

A.Change destination port
B.Direct users from the Internet to a server within your local network
C.Change source port
D.Hide your local network from the Internet

Correct Answer: A,B

Destination NAT (dst-nat) is used to redirect packets arriving at the router to a different internal destination. It is most commonly used to allow public access to internal services such as web servers or mail servers.
You can:
* Change the destination IP address (redirect to an internal host)
* Change the destination port (e.g., port 8080 to port 80)
But:
* C. Changing the source port is a function of src-nat, not dst-nat ##
* D. Hiding the local network from the Internet is done via masquerade or src-nat ## MTCNA Course Manual - NAT Section:
"Use dst-nat to forward traffic to a private host. Port translation can also be applied (e.g., from 81 to 80)." Rene Meneses Study Guide - NAT Configuration:
"dst-nat changes the destination IP/port of packets arriving on a specific interface. Common use case: access to LAN services from WAN." Terry Combs Notes - NAT Rule Summary:
"dst-nat = port forwarding. src-nat/masquerade = hide internal addresses."

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Question 32

Which of the protocols below is used by Netinstall?

A.arp
B.bootp
C.dhcp
D.rarp

Correct Answer: D

Netinstall is a MikroTik tool for reinstalling RouterOS on RouterBOARD devices. It uses the RARP (Reverse ARP) protocol during the boot phase to obtain the host from which to download the OS. It does not rely on DHCP, ARP, or BOOTP in standard Netinstall scenarios.
* A.#arp - Not used by Netinstall for initial boot communication
* B.#bootp - Not used in Netinstall process
* C.#dhcp - Not used for booting RouterBOARD into Netinstall
* D.#rarp - Used by Netinstall to allow the RouterBOARD to request an address and boot image Extract from MTCNA Course Material - Netinstall Boot Process:
"Netinstall uses RARP to discover the Netinstall server when booting into Ethernet mode." Extract from MikroTik Wiki - Netinstall:
"Netinstall communicates with the device via RARP protocol when loading RouterOS over Ethernet." Extract from Rene Meneses MTCNA Study Guide - Netinstall Chapter:
"RARP is used for booting during Netinstall. DHCP is not required for this operation."

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Question 33

Which of the following is the valid host range for the subnet on which the IP address 192.168.168.188
255.255.255.192 resides?

A.192.168.168.129-191
B.192.168.168.129-190
C.192.168.168.128-192
D.192.168.168.128-190

Correct Answer: B

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Question 34

It is possible to create an encrypted PPPoE tunnel in RouterOS:

A.true
B.false

Correct Answer: B

PPPoE (Point-to-Point Protocol over Ethernet) does not include encryption by default. It can authenticate users using PAP or CHAP, but the data payload is transmitted in cleartext unless another secure tunneling protocol (e.g., IPSec) is layered on top.
MikroTik supports encryption in other tunneling protocols, such as:
* SSTP (uses SSL)
* L2TP with IPSec
* OpenVPN (SSL-based)
* IPsec itself (for IP layer encryption)
MTCNA Tunneling Chapter - PPP Protocol Features:
"PPPoE offers authentication, compression, but no native encryption. Use IPSec if encryption is needed." Rene Meneses Guide - Tunnel Comparison Table:
"PPPoE is not encrypted. SSTP and L2TP/IPSec are alternatives when encryption is a requirement." Terry Combs Notes - PPP Family Summary:
"PPPoE: Authentication = Yes, Encryption = No. Use with caution over untrusted networks."

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Question 35

Select which of the following are 'Public IP addresses':

A.11.63.72.21
B.172.168.254.2
C.172.28.73.21
D.192.168.0.1
E.10.110.50.37

Correct Answer: A,B

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