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BCSE406L NoSQL Databases (Theory) Fall 2025-26 (A1+TA1) [VL2025260101966]
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In column family databases such as Cassandra or HBase, denormalization is preferred over traditional joins. Which of the following statements best explains why denormalization is used and how it improves performance?
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In the 3-way communication process using the Gossip protocol (as shown in the diagram), which of the following correctly represents the sequence of message exchanges between Node1 and Node2?
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What is hotspotting in Cassandra?
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In a fully connected communication network within a Cassandra architecture, how does the number of gossip messages exchanged scale as the number of nodes increases?
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In Cassandra, different consistency levels determine how many replicas must acknowledge a read or write operation. Which of the following statements best distinguishes QUORUM, LOCAL_QUORUM, and EACH_QUORUM in terms of their scope and trade-offs?
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Which of the following scenarios best justifies choosing a Column Family Database such as Cassandra over other database types?
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In a distributed Cassandra database, information entropy can occur when replicas hold inconsistent data. During an anti-entropy repair session, how does Cassandra detect and resolve these inconsistencies most efficiently?
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Which of the following statements best describes how a Bloom Filter functions and why it is beneficial?
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In column family databases such as Cassandra, using valueless columns can optimize data modelling. Which statement best describes the purpose and benefit of valueless columns?
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Which of the following statements correctly distinguishes a primary index from a secondary index in a database system?
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