Grokking Database Fundamentals for Tech Interviews
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Question 1
Which of the following algorithms is widely used for achieving consensus?
A
Two-Phase Locking
B
Bloom Filters
C
Paxos
D
Round-Robin Scheduling
Question 2
What is Raft primarily used for?
A
Ensuring database isolation levels
B
Simplifying leader-based consensus in distributed systems
C
Reducing network latency in communication
D
Maintaining distributed key-value stores
Question 3
What is the main challenge addressed by leader election strategies?
A
Selecting a leader node to coordinate tasks in distributed systems
B
Reducing redundant data writes
C
Synchronizing clocks across nodes
D
Assigning unique identifiers to nodes
Question 4
In the Bully algorithm for leader election, which node becomes the leader?
A
The first node to send an election message
B
The node with the lowest ID
C
The node with the lowest latency
D
The node with the highest ID
Question 5
What is the purpose of the Two-Phase Commit (2PC) protocol?
A
To ensure all nodes agree before committing a transaction
B
To replicate data across nodes for fault tolerance
C
To reduce network latency during data transfers
D
To elect a leader node for coordination

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Table of Contents

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