Grokking the Advanced System Design Interview
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Quiz: GFS
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Test your knowledge of the Google File System by completing this quiz.

In GFS, files are divided into ------- chunks.
Choose all correct options
Variable size
Fixed size
Both fixed and variable size
None of the above
To detect data corruption, GFS compares the contents of chunks on multiple ChunkServers.
Choose all correct options
True
False
File naming (or renaming) operation is atomic.
Choose all correct options
True
False
To collect ChunkServer's state, GFS master sends regular ------ messages to each ChunkServer.
Choose all correct options
KeepAlive
Status
StayAlive
HeartBeat
Does GFS use time-bound leases to reduce the network traffic?
Choose all correct options
True
False
Which two strategies are used to keep GFS highly available?
Choose all correct options
Fast Recovery and Checksumming
Checksumming and Operation Log
Checksumming and Master Replication
Fast Recovery and Chunk Replication
Random writes into files in GFS are
Choose all correct options
Frequent
Very Frequent
Less Frequent
Rare
Random writes into files in GFS are
Choose all correct options
Slow reads
Slow writes
Slow appends
None
| Distributing replicas onto different racks has following benefits (select all that apply):
Choose all correct options
Faster writes
Faster reads
Better reliability
Data integrity
What does a ChunkServer store? Select all that apply.
Choose all correct options
Chunk data (one file per chunk)
Chunk ACLs
Chunk metadata (version number, checksum)
Location of chunk replicas

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