Cisco Exam 300-915 Topic 19 Question 64 Discussion

Actual exam question for Cisco's 300-915 exam

Question #: 64
Topic #: 19

[All 300-915 Questions]

Refer to the exhibit.

Which two statements about MQTT messaging are true? (Choose two.)

AResult code 5 means the connection is accepted; result code 0 means the connection is 'refused, not authorized'.

BRedundant ClientIDs are supported by MQTT brokers.

CMQTT does not support a 'keep alive' functionality because it runs on top of TCP.

DResult code 0 means the connection is accepted; result code 5 means the connection is 'refused, not authorized'.

EBrokers can send the Last Will and Testament messages on behalf of the client.

Show Suggested Answer

Suggested Answer: C

by Maryrose at May 23, 2024, 08:56 AM

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Boris

1 years ago

Mosquito on a Cisco router? What is this, a crossover episode? I'm just going to pick D and hope for the best. At least it'll be more exciting than watching paint dry.

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Merlyn

12 months ago

Agreed, let's try that and see what happens.

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Bettina

12 months ago

I think D is the way to go.

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Gracie

12 months ago

Good idea, D it is. Fingers crossed!

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Joanna

1 years ago

Yeah, let's try that and see what happens.

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Chanel

1 years ago

Yeah, let's give it a shot. Maybe it'll work.

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Matthew

1 years ago

I think D is the way to go.

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Rosalind

1 years ago

I think I'll go with option D too. Can't hurt to try.

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Tom

1 years ago

Haha, C is definitely a trap answer. Who uses usernames and passwords these days? I bet the real issue is with the ports. Let's go with B and see if that fixes it.

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Rueben

1 years ago

Yeah, let's try option B and see if that solves the issue.

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Tequila

1 years ago

I agree, C does seem like a trap answer.

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Edelmira

1 years ago

Nah, I don't think that's it. The question says the connection is being refused, so it's probably a port forwarding issue. Let's go with A and try to map the port directly in the IOS config.

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Celestina

1 years ago

Hmm, I think the answer is D. Seems like the default port for Mosquitto is 1883, so we should update the package.yaml file to reflect that.

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Fausto

1 years ago

D) Insert in the package.yaml file under section ports: tcp: ["1883"]

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Evangelina

1 years ago

A) Insert in the IOS config: ip nat inside source static tcp 1883 interface GigabitEthernet0 1883

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