Cisco 350-801 Exam - Topic 12 Question 65 Discussion

Actual exam question for Cisco's 350-801 exam

Question #: 65
Topic #: 12

Refer to exhibit.

Refer to the exhibit. When a UC Administrator is troubleshooting DTMF negotiated by this SIP INVITE, which two messages are examined next to further troubleshoot the issue? (Choose two.)

AREGISTER

BSUBSCRIBE

CPRACK

DNOTIFY

EUPDATE

Show Suggested Answer

Suggested Answer: D

The Cisco Unified Communications Manager (CUCM) uses SIP Phone OAuth Port (5090) to listen for SIP line registration from Jabber OnPremise devices over TLS. However, CUCM uses SIP Mobile Remote Access Port (default 5091) to listen for SIP line registrations from Jabber over Expressway through mTLS. Both of these ports are configurable.

by Oretha at Oct 18, 2023, 11:46 AM

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Novella

6 months ago

Are we sure NOTIFY is the right choice? Feels a bit sketchy.

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Rossana

6 months ago

Wait, why would you check REGISTER? Seems off to me.

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Aja

6 months ago

I agree, PRACK and NOTIFY are the way to go!

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Precious

6 months ago

I think REGISTER might be relevant too, but not as much.

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Juliann

6 months ago

Definitely looking at PRACK and NOTIFY for DTMF issues.

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Jarod

7 months ago

I definitely remember that NOTIFY is important, but I’m torn between choosing UPDATE or SUBSCRIBE for the second message.

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Cheryl

7 months ago

I feel like the PRACK message could be relevant too, but I can't recall exactly how it ties into DTMF negotiation.

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Sunshine

7 months ago

I remember practicing a question like this, and I think the REGISTER message is more about session initiation, not DTMF troubleshooting.

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Gilbert

7 months ago

I think we might need to look at the NOTIFY messages since they can provide info about DTMF events, but I'm not entirely sure.

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Edelmira

7 months ago

Okay, I think I've got this. Since the question is asking about troubleshooting DTMF negotiation, the PRACK and NOTIFY messages would be the logical next steps to analyze, as they are commonly used for in-call signaling and media control.

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Sanda

7 months ago

Based on the question, I think the key is to identify the SIP messages that are most closely related to DTMF negotiation. My guess is that PRACK and UPDATE would be the best options to examine further.

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Lili

7 months ago

Hmm, I'm a bit unsure about this one. I know REGISTER and SUBSCRIBE are common SIP messages, but I'm not sure if they would be the best ones to look at here. I'll need to think this through more carefully.

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Dallas

7 months ago

This looks like a tricky SIP troubleshooting question. I'll need to carefully review the SIP INVITE message details to determine which other messages would be most relevant to examine next.

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Martha

7 months ago

Radix? What's that? I'm a bit confused on the details here.

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Herman

7 months ago

Hmm, I'm a bit confused about the different layers and how they're supposed to be linked together. I'll need to read through this carefully.

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Krystal

8 months ago

This seems like a straightforward security question. I'd go with implementing a firewall on the network to restrict unauthorized access.

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Suzan

1 year ago

I think the PRACK and UPDATE messages are the way to go here. Those are definitely involved in the SIP session negotiation process, which is what this question is all about.

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Tamar

11 months ago

I believe REGISTER and PRACK messages are the key messages to look at for troubleshooting DTMF negotiation in this SIP session.

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Josephine

11 months ago

Nichelle: That's a good point, those messages could provide valuable insights as well.

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Virgie

12 months ago

I think NOTIFY and SUBSCRIBE messages should also be examined to get a complete picture of the issue.

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Val

12 months ago

I agree, PRACK and UPDATE messages are crucial for troubleshooting DTMF negotiation in SIP sessions.

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Nichelle

12 months ago

User 2: I think NOTIFY and SUBSCRIBE messages should also be examined to get a complete picture of the issue.

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Luann

1 year ago

User 1: I agree, PRACK and UPDATE messages are crucial for troubleshooting DTMF negotiation.

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Kimberely

1 year ago

Aw, man, this question is tricky. I wish they'd just ask about something simple, like how many fingers I have. That's a DTMF I can handle!

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Laura

1 year ago

I'm not sure about this one. Maybe the SUBSCRIBE and NOTIFY messages are involved in DTMF negotiation, but I'm not confident. I guess I'll have to study up on SIP more before the exam.

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Evangelina

11 months ago

I'll make sure to review SIP messaging before the exam to feel more confident.

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Desirae

11 months ago

Yes, those are the correct messages to examine for troubleshooting DTMF negotiation.

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Cecily

11 months ago

I think you're right, SUBSCRIBE and NOTIFY messages are usually involved in DTMF negotiation.

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Ming

11 months ago

E) UPDATE

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Carey

11 months ago

D) NOTIFY

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Becky

12 months ago

C) PRACK

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Craig

1 year ago

B) SUBSCRIBE

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Gearldine

1 year ago

A) REGISTER

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Hoa

1 year ago

Hmm, the question is specifically asking about DTMF negotiation, so I'm thinking C and D might be the correct answers. The NOTIFY message is used to report events, which could be relevant for DTMF.

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Marg

1 year ago

Yes, NOTIFY and PRACK messages are important to examine when troubleshooting DTMF negotiation.

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Zona

1 year ago

I think you're right, C and D seem like the most relevant messages for troubleshooting DTMF negotiation.

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Lynda

1 year ago

I think option C and E are the two messages we need to examine next. The PRACK message is used for provisional responses, and the UPDATE message is used to update the session parameters.

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Iraida

1 year ago

I'm not sure about PRACK, but I believe NOTIFY is definitely one of the messages to look at.

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Flo

1 year ago

I agree with Tiera. PRACK and NOTIFY are crucial for troubleshooting DTMF.

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Tiera

1 year ago

I think the next messages to examine are PRACK and NOTIFY.

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