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Nokia 4A0-100 Exam - Topic 8 Question 125 Discussion

Actual exam question for Nokia's 4A0-100 exam

Question #: 125
Topic #: 8

[All 4A0-100 Questions]

Which of the following statements about IP route summarization is FALSE?

AIt divides a customer IP address pool into smaller portions, each of which is assigned to a different subnet.

BIt reduces the size of the routers' forwarding tables.

CIt improves scalability of the network.

DIt increases routing advertisement stability.

Show Suggested Answer

Suggested Answer: A

Route summarization (a.k.a. supernetting) is the process of combining multiple contiguous subnets into a single summarized route, which:

Reduces routing table entries

Enhances scalability and efficiency

Minimizes instability by localizing route changes

Option A is false because it describes subnetting, not summarization. Summarization works in the opposite direction -- combining smaller routes into a larger one.

Nokia IP Routing Guide -- Chapter: ''Route Summarization Techniques''

Cisco CCNA -- IP Routing Concepts

by Sharita at May 08, 2026, 04:59 AM

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Eliz

3 days ago

Wait, I thought summarization could divide address pools?

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Lucy

9 days ago

B, C, and D are all true, so A is the odd one out.

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Angelica

14 days ago

I agree, A doesn't make sense in this context.

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Dierdre

19 days ago

A is definitely false. Summarization doesn't divide address pools.

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Dorcas

24 days ago

I vaguely recall that summarization is supposed to improve scalability, so maybe option C is the one that’s false?

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Keneth

2 months ago

I'm not entirely sure, but I feel like option D might be the false one since summarization can sometimes lead to instability in certain scenarios.

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Kenny

3 months ago

I remember practicing a question about summarization benefits, and I think it definitely helps with reducing forwarding table size.

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Kristofer

3 months ago

I think option A sounds a bit off because summarization usually combines routes rather than dividing them.

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