MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) - C100DBA무료 덤프문제 풀어보기
What is the output of the following program?
정답: B
Which of the following is a valid Replica Set configuration if you want:
1-Have 3 copies of everything
2- That RS3 is never primary
2- That RSI and RS2 can be primary?
You had to see the different configurations, RS3 could be hidden or priority 0 (But not a referee because we need
3 replicas), while RSI and RS2 could NOT have priority 0 or be hidden or anything like that In a 4-member RS RSO , RSI, RS2 and RS3 + Referee, RSO (primary) falls after some write operations that have replicated RSI and RS2 (but NOT RS3), who can get up as the new primary?
The configuration comes and in it we see that RS2 has a hidden: true (or a priority: 0, (I don't remember)
1-Have 3 copies of everything
2- That RS3 is never primary
2- That RSI and RS2 can be primary?
You had to see the different configurations, RS3 could be hidden or priority 0 (But not a referee because we need
3 replicas), while RSI and RS2 could NOT have priority 0 or be hidden or anything like that In a 4-member RS RSO , RSI, RS2 and RS3 + Referee, RSO (primary) falls after some write operations that have replicated RSI and RS2 (but NOT RS3), who can get up as the new primary?
The configuration comes and in it we see that RS2 has a hidden: true (or a priority: 0, (I don't remember)
정답: B
What is the maximum size of Index Key Limit and Number of Indexes per collection?
정답: D
What tool do you use to see if you have a problem in the consumption of disk I / 0?
정답:
Mongoperf
Consider the following document from the products collection:
What does the following query using $elemMatch return? db.products.find( { product_code: "345678" }, { variations: { $elemMatch: { size: ^L^ } } } )
What does the following query using $elemMatch return? db.products.find( { product_code: "345678" }, { variations: { $elemMatch: { size: ^L^ } } } )
정답: C
In a collection that contains 100 post documents, what does the following command do? db. posts. find().skip(5).limit(5)
정답: D
MongoDB is
정답: A
Given a collection posts as shown below having a document array comments, which of the following command will create an index on the comment author descending?
정답: B
Which of the tags in a replica set configuration specify the operations to be read from the node with the least network latency?
정답: C