MongoDB Exam C100DBA Topic 1 Question 93 Discussion

Actual exam question for MongoDB's C100DBA exam

Question #: 93
Topic #: 1

In a sharded replica set environment, the w Option provides ability for write concern and j Option provides ability for the data to be written on disk journal. Consider that we have a seven member replica set and we want to assure that the writes are committed to journal. What should be the value of j?

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by Sabine at Jul 18, 2024, 08:15 PM

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Helaine

7 days ago

Choosing the right j value is like playing a game of 'Journal Roulette' - you don't want to end up with a blank journal, that's for sure!

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Carman

10 days ago

Option D) 0? That would be like asking the journal to take a coffee break during the writes. No way, man. Gotta be 1 for the j option!

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Gilberto

11 days ago

Hold on, why would we need a value of 7 for the j option? That's the total number of members in the replica set, not the journal write concern. I'm going with C) 1.

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Mee

14 days ago

I agree with Miss. A value of 1 for the j option will ensure the data is written to the journal, which is what we want in a sharded replica set environment.

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Lourdes

14 days ago

But wouldn't setting j to 7 be even more secure since it ensures all members have committed the write?

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Miss

16 days ago

Hmm, if we want to ensure the writes are committed to the journal, then the value of j should be 1. The j option is for the data to be written to the disk journal, so 1 should do the trick.

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Jeannine

19 days ago

I agree with Dortha, setting j to 1 will provide the necessary durability for the writes.

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Dortha

25 days ago

I think the value of j should be 1 to ensure data is written on disk journal.

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