Nokia 4A0-102 Exam - Topic 1 Question 33 Discussion

Actual exam question for Nokia's 4A0-102 exam

Question #: 33
Topic #: 1

A BGP router has loopback interfaces 192.168.1.1/27 and 192.168.2.1/27 advertised into BGP using the following export policy. The "aggregate 192.168.0.0/16" command is executed. What is the effect of this configuration?

AA single route for 192.168.0.0/16 is advertised.

BBGP routes 192.168.1.0/27, 192.168.2.0/27, and 192.168.0.0/16 are advertised.

CBGP routes 192.168.1.0/27 and 192.168.2.0/27 are advertised, and 192.168.0.0/16 appears as a 'Blackhole' route in the route table only.

DThe given export policy is invalid.

Show Suggested Answer

Suggested Answer: D

by Chanel at Jan 04, 2023, 09:16 PM

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Virgina

4 months ago

The export policy looks valid to me.

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Shawn

4 months ago

BGP routes 192.168.1.0/27 and 192.168.2.0/27 are still there too.

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Dewitt

4 months ago

Wait, are you sure about that? I thought it might be a blackhole route.

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Art

4 months ago

Totally agree, that's how aggregation works!

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Jamal

4 months ago

A single route for 192.168.0.0/16 is advertised.

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Viva

5 months ago

I feel like the export policy is valid, but I’m not sure if it would show the aggregate as a blackhole route. I might go with option C just to be safe.

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Margot

5 months ago

I’m confused about whether the aggregate command would still allow the specific subnets to be advertised. Could it be option B instead?

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An

5 months ago

I remember practicing a similar question where the aggregate command was used, and it resulted in just one route being advertised. So, I’m leaning towards option A.

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Margo

5 months ago

I think the "aggregate" command should create a single route for 192.168.0.0/16, but I'm not entirely sure if it suppresses the more specific routes.

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Blondell

5 months ago

Hmm, the key here seems to be making sure all columns are included exactly once, even though the partitions have different schemas. I'll need to pay close attention to how the options handle that.

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Jeniffer

5 months ago

I'm not so sure, but I feel like the same-origin policy might come into play here. It usually relates to security issues rather than freezing the browser.

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Shawna

5 months ago

Okay, I think I've got this. The question is asking about the key principles that should guide sampling design, and the answer that covers all of those is option C - "All of the above." I'm feeling good about selecting that one.

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Tuyet

5 months ago

Flicker-free mode could potentially impact frame rates, but wasn't that only in specific scenarios?

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Chau

10 months ago

I think the key here is the 'aggregate 192.168.0.0/16' command. That's going to override the more specific loopback subnets and result in a single 192.168.0.0/16 route being advertised. Option A seems like the clear winner to me.

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Glory

8 months ago

Got it. Thanks for the clarification!

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Cecil

9 months ago

Exactly. The more specific 192.168.1.0/27 and 192.168.2.0/27 routes will be suppressed in favor of the aggregated route.

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Shalon

9 months ago

That makes sense. So, only the 192.168.0.0/16 route will be advertised, right?

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Cathrine

9 months ago

I agree, option A is the correct choice. The aggregate command will summarize the more specific routes into a single route.

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Jennie

9 months ago

Thanks for clarifying. Option A it is then, the aggregate command will advertise a single route for 192.168.0.0/16.

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Olga

9 months ago

No, option B is incorrect. The aggregate command will only advertise the summarized route, not the individual subnets.

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Darrel

9 months ago

But what about option B? Wouldn't that also include the more specific routes along with the aggregated route?

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Trevor

10 months ago

Yes, option A is the most logical answer here. The aggregate command will advertise the 192.168.0.0/16 route instead of the individual loopback interfaces.

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Jesusita

10 months ago

I agree, option A is the correct choice. The aggregate command will summarize the more specific routes into a single route.

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Madelyn

10 months ago

I agree, option A is the correct choice. The aggregate command will summarize the more specific routes into a single route.

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Alex

10 months ago

Haha, I bet the exam writer is trying to trick us with that 'Blackhole' route option. As if BGP would advertise a 'Blackhole' route, that's just silly!

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Filiberto

10 months ago

Wait, if the loopback interfaces are advertised, shouldn't the BGP routes for 192.168.1.0/27 and 192.168.2.0/27 also be advertised? I'm not sure about this one.

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Carin

11 months ago

The 'aggregate 192.168.0.0/16' command will definitely aggregate the two loopback subnets into a single route. So, the correct answer is A) A single route for 192.168.0.0/16 is advertised.

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