40087902
Descripción
Test por Eladio Rocha, actualizado hace más de 1 año
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Creado por Eladio Rocha
hace casi 2 años
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Pregunta 1
Pregunta
What aspect of the CAP theorem does MongoDB trade off?
Respuesta
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Consistency
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Availability
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Partition tolerance
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Scalability
Pregunta 2
Pregunta
Why does MongoDB experience a brief period of downtime during server failure?
Respuesta
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The entire database must reboot.
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Data replication halts temporarily.
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The system must detect the outage and elect a new primary host.
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Config servers need to reinitialize.
Pregunta 3
Pregunta
Which part of the CAP theorem does Cassandra sacrifice?
Respuesta
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Consistency
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Availability
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Partition tolerance
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Fault tolerance
Pregunta 4
Pregunta
Why is Cassandra highly available?
Respuesta
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It replicates data across all nodes in real time.
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It avoids having a single master node.
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It requires all nodes to stay online simultaneously.
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It partitions data only when a node fails.
Pregunta 5
Pregunta
When designing a database system, what is a critical first step in choosing a database technology?
Respuesta
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Picking the most popular database solution.
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Ensuring consistency at all costs.
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Understanding the system’s specific requirements.
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Using a database that maximizes partition tolerance.
Pregunta 6
Pregunta
In what scenario is it acceptable to choose a database that sacrifices availability?
Respuesta
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When downtime longer than a few minutes is acceptable.
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When the system requires eventual consistency.
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When a few seconds of downtime is acceptable.
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When the system does not need to scale horizontally.
Pregunta 7
Pregunta
Which database technologies are examples of solutions that balance CAP trade-offs effectively for general-purpose use?
Respuesta
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Cassandra and PostgreSQL
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MongoDB and DynamoDB
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Oracle and SQLite
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Redis and MySQL
Pregunta 8
Pregunta
Why is it important to discuss database trade-offs in system design interviews?
Respuesta
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It shows familiarity with coding techniques.
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It demonstrates an understanding of scalability tools.
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It highlights an ability to make informed technical decisions.
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It ensures the interviewer agrees with your database choice.
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