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High-Level System Design (HLD) Quiz Questions

A sample of the 10 questions below — instant scoring and an explanation for every answer. No sign-in required to play.

Question 1

What does the CAP theorem state about distributed systems?

AAll systems must be consistent at all times

BAvailability is always more important than consistency

CA distributed system can only guarantee two of Consistency, Availability, and Partition tolerance at once

DPartition tolerance is optional in modern systems

Question 2

ABacking up a database daily

BSplitting a database into smaller, more manageable pieces distributed across multiple servers

CEncrypting sensitive columns

DCreating an index on a table

Question 3

ADistributes incoming network traffic across multiple servers

BCompresses data before sending

CStores application logs

DEncrypts database connections

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