MTCNA Exam Dumps : MikroTikCertified Network Associate Exam

The hardware-coded address that uniquely identifies a device's network interface card (NIC) on the local network is called a MAC address. It is “burned in” by the hardware manufacturer and remains constant unless manually overridden.

MAC stands for Media Access Control, and it operates at Layer 2 of the OSI model. It is used to identify devices on a local area network.

A. FQDN (Fully Qualified Domain Name) refers to a human-readable name used in DNS.

B. IP Address is a logical address used for routing at Layer 3.

C. Interface Address is a generic term and not a standard identifier.

D. MAC Address is correct and refers to the physical, hardware-encoded address on an interface.

Extract from MTCNA Course Manual – RouterBOARD Overview:

“A MAC address is a globally unique hardware identifier assigned to each Ethernet or wireless interface. It is used by Layer 2 to ensure local delivery.”

René Meneses Study Guide – MAC & OSI Layering:

“The MAC address is a 48-bit physical identifier, hardcoded by the device vendor and located in the NIC chip.”

Terry Combs MTCNA Notes – Layer 2 Concepts:

“MAC = Physical Address = Layer 2 Identifier. It’s what switches use to forward Ethernet frames.”

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Mangle rules that mark routing (using the routing-mark property) can only be applied in the following chains:

prerouting: For traffic arriving at the router

output: For traffic generated by the router itself

Other chains like forward, input, postrouting do not support routing-mark.

A.✔Correct – prerouting and output are used for routing-mark

B.✘forward does not support routing-mark

C.✘forward is invalid for routing-mark

D.✘input does not support routing decisions

E.✘postrouting is used for NAT, not routing

Extract from MTCNA Course Material – Mangle and Routing Marks:

“Routing-mark is applied only in prerouting (for transit traffic) and output (for router-generated traffic).”

Extract from MikroTik Wiki – Mangle:

“routing-mark can be used only in prerouting and output chains.”

Extract from René Meneses Study Guide – Mangle and PBR:

“To perform policy-based routing, use prerouting or output to assign routing-marks.”

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To determine if two hosts can communicate directly, their IP addresses must:

Belong to the same subnet

Have matching subnet boundaries (based on their masks)

Let’s evaluate each:

A. 192.168.17.15/29 → Subnet: 192.168.17.8 – 192.168.17.15

192.168.17.20/28 → Subnet: 192.168.17.16 – 192.168.17.31

→ Different subnets →❌

B. 10.5.5.1/24 → Subnet: 10.5.5.0 – 10.5.5.255

10.5.5.100/25 → Subnet: 10.5.5.0 – 10.5.5.127

→ Different masks → Host with /25 may treat others outside /25 as unreachable →❌

C. 10.10.0.17/22 → Range: 10.10.0.0 – 10.10.3.255

10.10.1.30/23 → Range: 10.10.0.0 – 10.10.1.255

→ Both addresses fall within same larger /22 range →✅

D. 192.168.0.5/26 → Subnet: 192.168.0.0 – 192.168.0.63

192.168.0.100 → Not enough info; assume default /24

→ /26 and /24 will not overlap fully → likely unreachable →❌

MTCNA Course Manual – IP Subnetting:

“Hosts can communicate directly if they are in the same IP range and have the same subnet mask. Different subnet boundaries require routing.”

René Meneses Guide – Mask Comparison:

“Be cautious of overlapping address ranges. Matching IPs in same range with differing subnet masks may fail to communicate.”

Terry Combs Notes – Direct Connectivity Rules:

“Same subnet mask and same address block = direct communication. If masks differ, communication needs a router.”