Q: Which method forces MongoDB to use a sparse index?
Hint()
Q: Which index type does not allow duplicate values?
Sparse, Unique
Q: Which query finds data inside a polygon area?
Geospatial
Q: Replica sets are recommended for which deployments?
New
Q: Which is true about Arbiter?
Remains unchanged when primary becomes secondary
Q: What happens if the primary node stops responding?
Another member becomes the new primary
Q: Maximum members in MongoDB 3.0 replica set?
25 total, 15 voting
Q: What is true about Priority 0 members?
Acts as a backup
Q: ACID stands for Atomicity, Consistency, ___, Durability
Isolation
Q: Who created FlockDB?
Q: What does CAP theorem state?
Only two of three properties can be achieved
Q: What is Partition tolerance?
System keeps working even if parts fail
Q: Tables with fixed schema describe which database?
Relational database
Q: Documents can have different structures describes:
MongoDB
A1. Horizontal
A2. Vertical
A3. Scaling up
A4. Scaling out
B4. The database may not be able to manage growing volumes of data
B1. The technique of enhancing a single node hardware
B2. Mitigates the risk of failure
B3. Commodity servers can be added to increase storage
