Answer:
A. client/server
Explanation:
Beacuse a Server or a client is what hold data for big companies like google and microsoft
He should find answers about the population size hope this helps
B. pivot table................................................
Akka. Speaking of high concurrency tools written in Scala, Akka is an extremely fast, extremely concurrent framework for building distributed applications. ... Similar to Finagle, Akka is written in Scala and provides both Scala and Java APIs.
