Answer:
Means no matter how many processors you use, speed up never increase from 10 times.
Explanation:
If a problem of size W has a serial component Ws,then performance using parallelism:
Using Amdahl's Law:
Tp = (W - Ws )/ N + Ws
Here, Ws = .1,
W - Ws = .9
Performance Tp = (.9 / N) + .1
---------------------------------------------------------
Speed Up = 1 / ( (.9 / N) + .1)
If N -> infinity, Speed Up <= 10
Means no matter how many processors you use, speed up never increase from 10 times.
Answer:
b. False
Explanation:
Difficult economic times, increased global competition, demand for customization, and increased consumer sophistication does not direct companies to hire more employees and outsource middle managers.
Rather, companies tend to invest new technologies, information systems to satisfy the needs in global competition, consumer sophistication and customization.
Middle managers outsourced cannot deal these issues effectively, therefore they need to be company employees.
In difficult economic times, companies does not want to hire extra employees because of increased cost.
The answer is a
relational database.
A data model in database management system consists of rules
that define how the DB organizes data. Today, a relational database is widely
used. It is a collection of data items organized as a set of formally described
tables from which data can be accessed in many different ways.
