Q.1 What is the disk usage limit above which the shards are not assigned to the nodes by default?
A. Greater than 85%
B. Greater than 75%
C. Greater than 95%
D. Greater than 65%
Ans : Greater than 85%
Q.2 Most of the domains have started using Elasticsearch as _________
A. It supports structured and unstructured search
B. It is scalable
C. It is open source
D. All the options
Ans : All the options
Q.3 What is the need for tuning the performance of Elasticsearch?
A. It speeds up indexing
B. It speeds up searching
C. Both the options
Ans : Both the options
Q.4 The following are reasons for node failure, except ___________
A. Hardware failure
B. Hypervisor failure
C. Sudden increase in the search rate
D. None of the options
Ans : None of the options
Q.5 Which of the following is an indication that the cluster is ideal?
A. Cluster Status is not green
B. Cluster Status is green
C. Cluster Status is yellow
Ans : Cluster Status is green
Q.6 When all the data nodes are running low on disk space, then the solution is __________.
A. To add more data nodes to the cluster
B. To set a threshold alert
C. None of the options
Ans : To add more data nodes to the cluster
Q.7 The cluster status is red if __________.
A. A secondary shard is missing
B. A primary shard is missing
C. A primary shard is available
Ans : A primary shard is missing
Q.8 What is force merging related to?
A. Reducing the number of segments per shard to enhance search performance
B. Increasing the number of segments per shard to enhance search performance
Ans : Reducing the number of segments per shard to enhance search performance
Q.9 More than one node starts behaving as master node during the __________.
A. Combined Brain syndrome
B. Connected Brain syndrome
C. Split Brain syndrome
D. None of the options
Ans : Split Brain syndrome
Q.10 Force merging is advisable at ___________.
A. Non-peak time
B. Peak time
Ans : Non-peak time
Q.11 bootstrap.memory_lock: true _____________.
A. Allows the swapping process
B. Disallows the swapping process
Ans : Disallows the swapping process
Q.12 The following are types of nodes in Elasticsearch, except ________
A. Data node
B. Ingest node
C. Customized node
D. Master-eligible node
Ans : Customized node
Q.13 The cluster status is yellow if ___________.
A. A replica shard is missing
B. Both primary and replica shards are missing
C. A primary shard is missing
Ans : A replica shard is missing
Q.14 CRUD operations are accomplished by ____________.
A. Data node
B. Ingest node
C. Coordinating node
D. Tribe node
Ans : Data node
Q.15 To avoid TOO_MANY_REQUESTS (429) response, ___________.
A. Avoid using threads while indexing
B. Use multiple threads while indexing
C. Use single thread while indexing
Ans : Use multiple threads while indexing
Q.16 Searching and Indexing performance in Elasticsearch depends upon _________.
A. Hardware
B. The type of query
C. The style of indexing
D. All the options
Ans : All the options
Q.17 Copying a page of memory to a pre-configured space in the hard disk for freeing up the page of memory is called _____________.
A. Debugging
B. Swapping
C. Swap space
Ans : Swapping
Q.18 What is the impact of split brain syndrome?
A. Indexing requests to any of the nodes will result in adding data to both the shards.
B. Indexing requests to any of the nodes will result in adding no data to any of the shards.
Ans : Indexing requests to any of the nodes will result in adding data to both the shards.
Q.19 Search operations on connected clusters is accomplished with the help of _______________.
A. Tribe node
B. Ingest node
Ans : Tribe node
Q.20 What hinders the performance and causes garbage collection to run for minutes?
A. Debugging
B. Swapping
C. Swap space
Ans : Swapping
