Why distributed patterns solve common challenges in HLD - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to identify the main benefit of load balancing in distributed systems.

HLD

Load balancing helps to [1] the workload evenly across servers.

Drag options to blanks, or click blank then click option'

Adistribute

Bconcentrate

Cignore

Ddelay

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'concentrate' because it sounds like focusing, but it causes overload.

Load balancing distributes the workload evenly to avoid overloading any single server.

2fill in blank

medium

Complete the code to explain how caching improves system performance.

HLD

Caching stores frequently accessed data to [1] response time.

Drag options to blanks, or click blank then click option'

Aincrease

Bignore

Creduce

Dduplicate

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'increase' because it sounds like more, but that slows down the system.

Caching reduces response time by keeping data ready for quick access.

3fill in blank

hard

Fix the error in the statement about fault tolerance.

HLD

Fault tolerance means the system can [1] to failures without stopping.

Drag options to blanks, or click blank then click option'

Adelay

Brecover

Cignore

Dfail

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'fail' because it sounds related, but it means the opposite.

Fault tolerance means the system recovers or continues working despite failures.

4fill in blank

hard

Fill both blanks to describe how replication and partitioning help scalability.

HLD

Replication [1] data copies, while partitioning [2] data across servers.

Drag options to blanks, or click blank then click option'

Acreates

Bdeletes

Csplits

Dcombines

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up replication and partitioning actions.

Replication creates copies of data for availability. Partitioning splits data to spread load.

5fill in blank

hard

Fill all three blanks to explain the role of message queues in distributed systems.

HLD

Message queues [1] communication, [2] components, and [3] system reliability.

Drag options to blanks, or click blank then click option'

Aenable

Bdecouple

Cimprove

Dblock

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'block' which would stop communication instead of helping it.

Message queues enable communication, decouple components, and improve reliability by buffering messages.