M102 HOMEWORK 2.1

MongoDB preserves the order of writes in a collection in its consistency model. Once done with that, run homework. You only have two data centers available. My first introduction to MongoDB was to sign up to university. To find answer of second question, it is necessary to find number of documents scanned by above query. Which of these statements is true? Keep the other shell with homework.

Check all that apply:. Add two data bearing members plus one arbiter. Download and extract the json file in products. Does the explain output indicate that an index was used? Find the slow operation and terminate it.

Execute following command to check if indexes are created. However, I didn’t have any problems related to the version.

This method will simply verify that this simple cluster is up and running and return a result key. One way to assure people vote at most once per posting is to use this form of update: It was only an issue when running with multiple processes that need to communicate, such as in the topics covering Replica Sets and Sharding.

Which of these statements is true?

m102 homework 2.1

Add another data bearing node. In this problem, ‘s oplog was effectively a “fork” and to preserve write ordering a rollback was necessary during ‘s recovery phase.

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m102 homework 2.1

Newer Post Older Post Home. MongoDB is “multi-master” — you can write anywhere, anytime. How many products match this query? Which of the following options will allow you to ensure that homewofk primary is available during server maintenance, and that any writes it receives will replicate during this time?

Once you have two secondary servers, both of which have sync’d with the primary and are caught up, run on your primary: Check all that apply.

M102 WEEK 3

For question three, check value for indexName key which gives name of index used. Leave a Reply Cancel reply Your email address will not be published.

When you are done, homweork Then when you start your MongoDB processes they will function correctly.

Once you have eliminated the slow operation, run on your second tab: Run the same query, but this time do an explain. Keep the other shell with homework. Start a mongod server instance if you still have a replica set, that would work too.

What result does this expression give when evaluated? Now, what query hojework you run to get all the products where brand equals the string “ACME”? MongoDB preserves the order of writes in a collection in its consistency model.

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In a mongo shell run homework. Once done with that, run homework. This will simply confirm all the hlmework happened ok. Based on the explain output, which of the following statements below are true?

M WEEK 3 – Understand !!! Implement !!! Analyze !!!

Connect to the mongos with a mongo shell. Which of the following are true about mongodb’s operation in these scenarios?

Once you have it right and are ready to move on, ctrl-c terminate the shell that is still running the homework. Add two data bearing members plus one arbiter. Instead of running it normally, you need to right-click and Run As Administrator.

October 31, March hoework, Sonali. Choose the best answer:. MongoDB has a data type for binary data.