Discuss PostgreSQL PGCES-02 Exam Topic 5 Question 6

psql generated the following error message: psql: could not connect to server: Connection was refused Is the server running on host "server.example.com" and accepting TCP/IP connections on port 5432? Select two reasons that are NOT the cause of this error.

AHost 'server.example.com' does not exist.

BThe PostgreSQL server is not running on 'server.example.com'.

CThe PostgreSQL server is not accepting TCP/IP connections on 'server.example.com'.

DThe PostgreSQL server is running on a port other than 5432 on 'server.example.com'.

EThe username and/or password are incorrect.

Suggested Answer: A, E

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12 comments · newest first

Eileen 11 months ago

I thought incorrect credentials could cause this too, but maybe not?

Oren 11 months ago

C is definitely a reason, but E is unrelated.

Walton 12 months ago

Wait, could it actually be D? That’s a possibility!

Gaston 12 months ago

I agree, B is also not the cause here.

Glendora 12 months ago

Definitely not A, that host exists.

Sabrina 1 year ago

I’m a bit confused, but I think option A about the host not existing could be a valid reason for the error, so maybe it’s not one of the answers we need.

Selma 1 year ago

I feel like we had a practice question about server ports, so option D could be a reason that doesn't cause the error.

Carman 1 year ago

I'm not entirely sure, but I think option E about username and password might not be related to the connection refusal error.

Mirta 1 year ago

I remember we discussed that if the server isn't running, it would definitely cause a connection issue, so I think option B is likely a cause.

Marnie 1 year ago

Okay, let me think this through. The question says the GVP deployment requires TTS using MRCP, so I need to make sure the MRCP settings are correct. I'll go with option A and update the MRCP URL.

Erasmo 1 year ago

Okay, I've got this. PIM is focused on efficient multicast routing, so the answer has to be about something like preventing forwarding loops or ensuring delivery. I'm confident I can get this right.

Tommy 1 year ago

I think Application Centric Infrastructure is definitely involved since it optimizes deployment. It feels similar to practice questions we've done.

PostgreSQL PGCES-02 Exam - Topic 5 Question 6 Discussion