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MikroTik MTCNA (MikroTik Certified Network Associate) exam is designed to test the knowledge and skills of networking professionals who are interested in working with MikroTik routers and wireless access points. MTCNA exam is intended to provide a baseline of knowledge for those who are just starting out in the world of MikroTik networking, and is a stepping stone towards more advanced certifications.
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MikroTik Certified Network Associate Exam Sample Questions (Q40-Q45):
NEW QUESTION # 40
A PC with IP 192.168.1.2 can access internet, and static ARP has been set for that IP address on gateway.
When the PC Ethernet card failed, the user changed it with a new card and set the same IP for it. What else should be done? [multiple answers]
- A. Nothing - it will work as before
- B. Another IP has to be added for Internet access
- C. MAC-address of the new card has to be changed to MAC address of old card
- D. Old static ARP entry on gateway has to be updated for the new card
Answer: C,D
Explanation:
When static ARP is configured, the router explicitly binds an IP address to a specific MAC address. This means:
* If the MAC address of the device changes (as it does when a new network card is installed), and the IP remains the same, the router will not allow the device to communicate, because the MAC address in the ARP table no longer matches the new hardware.
Options explained:
* A.#Correct. The old ARP entry must be updated to reflect the new MAC address if the IP is reused.
* B.#Incorrect. The communication will fail if the ARP table still holds the outdated MAC for that IP.
* C.#Correct. Alternatively, if the new NIC supports MAC address modification, setting the MAC address to match the old one would make the static ARP entry valid again.
* D.#Incorrect. There's no need to change the IP if the static ARP entry is updated.
Extract from Official MTCNA Course Material - ARP Section:
"Static ARP entries tie IPs to MAC addresses. If the MAC changes but the static ARP entry remains unchanged, the device cannot communicate with the router." Extract from Rene Meneses MTCNA Study Guide - ARP:
"When using static ARP, any MAC change must be reflected in the router's ARP table; otherwise, packets will be dropped." Extract from MikroTik Wiki - ARP Modes:
"Static entries require matching MAC addresses. If the client's MAC changes, the ARP table must be updated or communication will fail."
NEW QUESTION # 41
The DoD model (also called the TCP/IP stack) has four layers. Which layer of the DoD model is equivalent to the Network layer of the OSI model?
- A. Network Access
- B. Internet
- C. Host-to-Host
- D. Application
Answer: B
Explanation:
The TCP/IP or DoD model includes the following layers:
* Application
* Host-to-Host
* Internet
* Network Access
The Internet layer in the DoD model is responsible for logical addressing and routing - matching the function of the OSI model's Layer 3 (Network Layer), which handles IP addressing and packet forwarding.
MTCNA Course Material - TCP/IP vs OSI Model:
"The Internet layer of the TCP/IP model maps directly to the OSI's Network Layer and is responsible for logical addressing and routing." Rene Meneses MTCNA Study Guide - Layer Mapping Table:
"TCP/IP Internet Layer = OSI Network Layer. Handles IP routing, addressing." Other mappings:
* Application = OSI Layers 5-7
* Host-to-Host = OSI Layer 4 (Transport)
* Network Access = OSI Layers 1-2
NEW QUESTION # 42
What is the meaning of letter "R" on an active session in the menu PPP Active Connections?
- A. Running
- B. Radius
- C. Remote
Answer: B
NEW QUESTION # 43
What does the command routerA(config)#line cons 0 allow you to perform next?
- A. Set the Telnet password.
- B. Disable console connections.
- C. Set your console password.
- D. Shut down the router.
Answer: C
NEW QUESTION # 44
What is a stub network?
- A. A network with more than one exit point.
- B. A network with only one entry and no exit point.
- C. A network with more than one exit and entry point.
- D. A network that has only one entry and exit point.
Answer: D
NEW QUESTION # 45
......
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