In a Redis Cluster, how is data distributed across the nodes?
Data is randomly assigned to any node.
Data is manually partitioned by the user during setup.
Data is distributed using consistent hashing based on a key's hash slot.
Data is replicated to all nodes for high availability.
Which Redis feature allows you to persist data from memory to disk, providing some level of durability?
Virtual Memory
Persistence
Transactions
Replication
Which tool is used to orchestrate and manage the nodes in a Redis Cluster?
redis-benchmark
redis-cli
redis-server
redis-trib.rb
What is a 'hash slot' in the context of Redis Cluster?
A security feature that encrypts data before storing it in the cluster.
A type of data structure that stores key-value pairs using a hash function.
A physical slot on the Redis server where data is stored.
A virtual slot used to determine data distribution across the cluster.
Which use case is particularly well-suited for Redis Pub/Sub?
Performing complex data aggregations.
Maintaining a persistent, ordered log of events.
Implementing a real-time chat application.
Storing large JSON documents for retrieval.
Which Redis command is used to retrieve geospatial points within a specified radius?
GEODIST
GEOSEARCH
GEORADIUS
GEOADD
How can Redis be used effectively with a NoSQL database like MongoDB?
As a caching layer for frequently accessed MongoDB documents.
For implementing distributed locking mechanisms for concurrent MongoDB updates.
For storing real-time metrics and counters related to MongoDB operations.
All of the above
In Redis Cluster, what happens if a node holding a primary key fails?
All other nodes in the cluster take over the data from the failed node.
Data on the failed node is lost permanently.
A replica of the failed node is promoted to master, ensuring data availability.
The cluster becomes inaccessible until the failed node is restored.
Which design pattern in Redis is MOST suitable for representing a queue-like structure with efficient push and pop operations?
Set
Sorted Set
List
HyperLogLog
What is the minimum number of Redis nodes required to create a functional Redis Cluster?
3
2
1
6