In a 3 member replica set, there are ____ primary members and ____ secondary members.
1, 2
In a replica set, we are able to both read and write to a _____.
primary member
MongoDB addresses high availability through the use of what?
replication
MongoDB’s primary way of accommodating growing data volumes is called:
sharding
In a highly available MongoDB environment, we are able to both read and write to a ____.
primary node
Which of the following are sharding methods? [select any that apply]
- Range
- Hash
- Zoned
- Color
- Range
- Hash
- Zoned
x Color
This is a great way to provide high availability of client data.
- Config Node
- Replication
- Sharding
- Backups
x Config Node
- Replication
x Sharding
x Backups
True or False? Data Validity/Schema Validation can be selectively enforced as needed in MongoDB.
True
When a “write” occurs to the database, it’s first saved to the following:
primary node
The process of bringing a Primary node back online and into the replica set after it has failed is known as:
- Self healing
- Primary restore
- Secondary replace
- Online rehealing
- Self healing
x Primary restore
x Secondary replace
x Online rehealing
These are some of the benefits to scaling horizontally: [select any that apply]
- Leverage commodity hardware
- Highly specialized hardware
- More predictable costs
- Easier to scale up
- Leverage commodity hardware
x Highly specialized hardware - More predictable costs
x Easier to scale up
In MongoDB, a best practice is to have at least a ____ ____ replica set to provide basic high availability. [two words]
Correct Answer: three member
