CASSANDRA Installation and Configuration 2

Question 1

What does the 'num_tokens' setting control in cassandra.yaml?

Accepted Answer

The number of virtual nodes (token ranges) assigned to this node

Answer

num_tokens sets how many virtual node token ranges are assigned to this physical node, with higher values improving load balance.

Question 2

How do you enable authentication in Cassandra?

Accepted Answer

Set authenticator: PasswordAuthenticator in cassandra.yaml

Answer

Setting authenticator to PasswordAuthenticator in cassandra.yaml enables username/password authentication using the system_auth keyspace.

Question 3

What does the 'endpoint_snitch' configuration control in Cassandra?

Accepted Answer

How Cassandra determines the topology (rack/DC) of nodes for replica placement

Answer

The endpoint_snitch tells Cassandra how nodes are organized into racks and data centers so it can place replicas intelligently to maximize fault tolerance.

Question 4

Which directory parameter in cassandra.yaml specifies where SSTables are stored on disk?

Accepted Answer

data_file_directories

Answer

data_file_directories defines the on-disk path(s) where Cassandra writes SSTable files for all keyspaces and tables.

Question 5

What is the purpose of the 'internode_encryption' setting in cassandra.yaml?

Accepted Answer

Enables TLS encryption for communication between Cassandra nodes

Answer

internode_encryption controls whether TLS is used to secure gossip and streaming traffic between nodes in the cluster.

CASSANDRA - Apache Cassandra Database Practice Test

CASSANDRA - Apache Cassandra Database Practice Test

CASSANDRA Installation and Configuration 2