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Fundamentals & Scalability — Series 3
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A large backup saturates a 100 Mbps link. Round-trip latency is only 2 ms, and CPU and disks are idle. Which change most directly shortens the transfer?
AIncrease the receiver's disk capacity.
BIncrease available link bandwidth.
CReduce the round-trip time to 1 ms.
DAdd CPU cores to the sending server.
An application stores large immutable video files plus searchable ownership metadata. Which split best fits these access patterns?
AA relational row containing each video and its metadata.
BA shared application-server disk for videos and metadata.
CObject storage for videos; a database for metadata.
DA search index containing videos alongside ownership fields.
A request crosses six services and occasionally takes four seconds. The team wants to identify which hop consumed the time. What should it inspect first?
AThe daily number of successful requests.
BA histogram of latency for each service, without request correlation.
CA distributed trace for a slow request.
DThe fleet's average CPU utilization.
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