Cisco 300-420 Exam - Topic 6 Question 118 Discussion

Actual exam question for Cisco's 300-420 exam

Question #: 118
Topic #: 6

An architect must design a QoS model for a business-critical application that Is delay-sensitive and requires high bandwidth. The company's head office hosts the application, and DMVPN tunnels protected with IPsec provide connectivity between the head office and branches. Which solution must the architect choose?

ARSVP

BIntServ

CWRED

DDiffServ

Show Suggested Answer

Suggested Answer: D

by Natalie at Nov 25, 2025, 12:07 AM

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Rebbecca

5 months ago

DiffServ handles both delay and bandwidth effectively.

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Ruthann

5 months ago

WRED is good for congestion, but not enough for high bandwidth needs.

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Desmond

5 months ago

But what about RSVP? It’s also designed for QoS.

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Mary

5 months ago

Agreed! Delay-sensitive apps need that.

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Frederica

6 months ago

I think DiffServ is the best choice here. It prioritizes traffic well.

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Juliann

6 months ago

Nah, DiffServ is definitely the way to go for this scenario!

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Yoko

6 months ago

Surprised no one mentioned RSVP, it’s still relevant!

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Ronny

7 months ago

WRED seems like a good option too, right?

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Tamar

7 months ago

I think IntServ is better for strict QoS needs.

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Stefania

7 months ago

RSVP? More like RSRP (Really Slow Resource Provisioning). DiffServ is the way to go, my dudes.

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Tijuana

7 months ago

I'm going with WRED. It's great for managing congestion and ensuring high-priority traffic gets the necessary resources.

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Alayna

7 months ago

DiffServ is the way to go. It's more scalable and easier to implement than RSVP, and it should meet the bandwidth requirements.

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Quentin

7 months ago

RSVP seems like the obvious choice here. It's designed for delay-sensitive applications and can guarantee the required bandwidth.

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Lakeesha

8 months ago

WRED seems to be more about congestion management rather than directly addressing QoS for delay-sensitive applications, right?

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Rose

8 months ago

I practiced a similar question where IntServ was mentioned, but I don't recall it being scalable enough for a business-critical application like this.

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Dominic

8 months ago

I feel like DiffServ might be the right choice since it can handle different levels of service, especially for delay-sensitive applications.

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Oliva

8 months ago

I've got a good handle on the QoS models, so I'm feeling confident about this one. Based on the delay-sensitive and high bandwidth needs, I'm going to go with DiffServ as the best solution. It should give the architect the flexibility to prioritize the critical application traffic.

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Jackie

8 months ago

The key here is that the application is delay-sensitive and requires high bandwidth. That makes me think DiffServ might be the way to go, since it can prioritize traffic based on those requirements. But I'll double-check the details on each model to be sure.

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Hannah

8 months ago

RSVP is for resource reservation, right? I'm not sure that's the best fit here since the question is asking about a QoS model. I think I'll focus on IntServ and DiffServ as the more likely options.

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Kenneth

9 months ago

I think I remember that RSVP is more about reserving bandwidth, but I'm not sure if it's the best fit for this scenario.

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Cyndy

9 months ago

Gotta go with DiffServ for scalability!

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Shaniqua

9 months ago

IntServ is too complex for this scenario.

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Kenda

9 months ago

IntServ? Really? That's so 90s. DiffServ is the modern solution for this kind of scenario.

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Goldie

9 months ago

Okay, I know we covered QoS models in class, but I'm a bit fuzzy on the differences between IntServ and DiffServ. I'll need to review my notes to make sure I understand the pros and cons of each.

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