Huawei H12-891_V1.0 Exam - Topic 4 Question 56 Discussion

Actual exam question for Huawei's H12-891_V1.0 exam

Question #: 56
Topic #: 4

As shown in the figure, the PPP link between R1 and R2 is not in the same network segment, but the R1 and R2 direct connectors can communicate, and the Ethernet link cannot communicate under the same planning, why?

AThe interconnect POS ports of R1 and R2 learn the 24-bit subnet route of each other's direct connection ports through IPCP

BThe interconnect POS ports of R1 and R2 learn the 32-bit host route for each other's direct connections through IPCP

CThe interconnect POS port of RI and R2, through LCP learns the MAC address of the opposite termination , does not need to use ARP to request the MAC address

DThe data packets of the interconnect POS ports of R1 and R2 do not need to encapsulate ethernet headers and do not need to use ARP to request MAC addresses

Show Suggested Answer

Suggested Answer: B, D

by Nicolette at Sep 17, 2024, 02:43 PM

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Hortencia

3 months ago

Not sure I get why Ethernet can't work here.

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Merissa

3 months ago

IPCP helps in learning routes, right?

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Dylan

3 months ago

Wait, so the Ethernet link can't communicate? That's surprising!

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Blossom

4 months ago

Totally agree, that's how PPP works!

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Francine

4 months ago

R1 and R2 can communicate directly without Ethernet headers.

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Gretchen

4 months ago

I’m leaning towards option A since IPCP is involved, but I’m confused about the subnet versus host routes. I need to double-check that concept.

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Arletta

4 months ago

I feel like option D makes sense because if the POS ports don’t need Ethernet headers, that could explain the communication issue. But I’m not completely confident.

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Audria

4 months ago

This question seems similar to one we practiced about routing protocols and how they interact with different link types. I think it might have to do with how MAC addresses are handled.

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Almeta

5 months ago

I remember something about how PPP can work over different network segments, but I'm not entirely sure why the Ethernet link fails.

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Dean

5 months ago

Okay, I think I've got it. The PPP link uses IPCP to learn the routing information, while the Ethernet link needs to use ARP. That's why they can't communicate under the same planning.

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Gregg

5 months ago

The key seems to be understanding how the PPP link and direct connectors can communicate, while the Ethernet link cannot. I'll focus on that difference.

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Hailey

5 months ago

I'm a bit confused by the different network segments and how the PPP link and Ethernet link are connected. I'll need to re-read the question carefully.

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Sylvia

5 months ago

This question seems tricky, but I think I can figure it out if I break it down step-by-step.

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Leontine

5 months ago

I recall a practice question where it said something about exporting configurations, but now I'm confused if it can only be partial or complete.

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Kattie

1 year ago

Option D makes the most sense to me. No need for Ethernet when the routers can talk directly over the PPP link. Gotta love those networking shortcuts!

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Marilynn

1 year ago

D is the way to go. PPP links can communicate directly without the overhead of Ethernet headers and ARP. Saves a lot of time and resources.

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Lucy

1 year ago

Haha, the question is so confusing, I feel like I need a Ph.D. in networking to understand it. But I'll go with D, it sounds the most logical.

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Denny

1 year ago

Mindy: Let's go with option D then.

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Vanesa

1 year ago

User 3: I think so too, option D seems logical.

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Jose

1 year ago

User 3: I think D is the correct answer too.

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Mindy

1 year ago

User 2: Yeah, I think option D makes the most sense.

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Maryann

1 year ago

User 2: Yeah, D seems like the right choice.

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Christiane

1 year ago

User 1: I agree, D does sound logical.

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Stephaine

1 year ago

I agree, this question is really confusing.

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Arleen

1 year ago

I think the answer is C. The LCP protocol allows the interconnect ports to learn the MAC addresses of the other end, so no ARP is needed.

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Osvaldo

1 year ago

D) The data packets of the interconnect POS ports of R1 and R2 do not need to encapsulate ethernet headers and do not need to use ARP to request MAC addresses

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Jutta

1 year ago

C) The interconnect POS port of RI and R2, through LCP learns the MAC address of the opposite termination , does not need to use ARP to request the MAC address

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Frank

1 year ago

B) The interconnect POS ports of R1 and R2 learn the 32-bit host route for each other's direct connections through IPCP

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Lauran

1 year ago

A) The interconnect POS ports of R1 and R2 learn the 24-bit subnet route of each other's direct connection ports through IPCP

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Claudia

1 year ago

The correct answer is D. The PPP links between R1 and R2 do not need to use Ethernet headers or ARP since they communicate directly at the network layer.

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Mitzie

1 year ago

C) The interconnect POS port of RI and R2, through LCP learns the MAC address of the opposite termination , does not need to use ARP to request the MAC address

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Alease

1 year ago

B) The interconnect POS ports of R1 and R2 learn the 32-bit host route for each other's direct connections through IPCP

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Agustin

1 year ago

A) The interconnect POS ports of R1 and R2 learn the 24-bit subnet route of each other's direct connection ports through IPCP

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Martin

1 year ago

Interesting point, Reuben. But I still think option A makes more sense in this scenario.

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Reuben

1 year ago

I disagree, I believe the correct answer is D) The data packets of the interconnect POS ports of R1 and R2 do not need to encapsulate ethernet headers and do not need to use ARP to request MAC addresses.

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Martin

1 year ago

I think the answer is A) The interconnect POS ports of R1 and R2 learn the 24-bit subnet route of each other's direct connection ports through IPCP.

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