Nokia 4A0-100 Exam - Topic 2 Question 121 Discussion

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

Question #: 121
Topic #: 2

[All 4A0-100 Questions]

Which of the following Nokia 7750 SR components is NOT part of the data plane?

DThe Control Processor Module (CPM)

CThe eXpandable Media Adapter (XMA)

AThe Media Dependent Adapter (MDA)

BThe Input/Output Module (IOM)

Show Suggested Answer

Suggested Answer: D

The Nokia 7750 SR architecture separates its operations into control plane and data plane functions.

The Data Plane includes hardware components responsible for forwarding traffic at line rate. These components include:

MDA (Media Dependent Adapter) -- interfaces with physical media.

IOM (Input/Output Module) -- performs high-speed packet forwarding and processing.

XMA (eXpandable Media Adapter) -- extends port capacity and media support.

The Control Plane includes the CPM (Control Processor Module), which is responsible for running routing protocols, managing configuration, system operations, and other control-related functions. The CPM does not participate in data forwarding and is thus not part of the data plane.

Nokia SRA Study Guide, Chapter: 'System Architecture -- 7750 SR Components'

Nokia IP Networks and Services Fundamentals -- Section: Control and Data Plane Functions in SR Architecture

by Garry at Jan 28, 2026, 01:08 PM

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Catherin

5 days ago

The data plane is where the data goes, so it can't be that. Maybe it's the unicorn horn?

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Margurite

10 days ago

Hmm, the data plane is the heart of the router, so it can't be that. Maybe it's the coffee maker?

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Theola

15 days ago

The data plane is where all the action happens, so it can't be that. Maybe it's the kitchen sink?

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Blossom

20 days ago

I'm pretty sure the management plane isn't part of the data plane. That's like asking me to put my car keys in the gas tank.

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Gussie

25 days ago

The control plane, of course. How else would the data plane know what to do?

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Fanny

1 month ago

I vaguely remember that the data plane handles the actual data traffic, so maybe it's something related to management or control functions?

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Merrilee

1 month ago

I feel like the management plane might be the answer, but I can't recall if that's considered part of the data plane or not.

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Blondell

2 months ago

I remember practicing a question similar to this, and I think it had to do with routing protocols versus forwarding.

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Elroy

2 months ago

I think the control plane components are the ones that aren't part of the data plane, but I'm not sure which specific ones we're talking about here.

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Lizbeth

2 months ago

Ugh, I'm a bit lost on this one. I'll need to go back and review the differences between the control plane and data plane for the Nokia 7750 SR.

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Juan

2 months ago

I've got a good understanding of the Nokia 7750 SR components, so I think I can tackle this question. Let me carefully consider each option.

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Margurite

3 months ago

I'm not too familiar with the specifics of the Nokia 7750 SR, but I'll give it my best shot and try to eliminate the options that don't sound like they're part of the data plane.

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Rosenda

3 months ago

Okay, let me think this through. The data plane is responsible for forwarding traffic, so I'll need to identify the components that aren't directly involved in that.

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Albina

3 months ago

Hmm, this seems like a tricky one. I'll need to review my notes on the Nokia 7750 SR architecture.

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