Which of the following is often the GREATEST challenge of distributed computing solutions?

A.
scalability

B.
security

C.
heterogeneity

D.
usability

Explanation:
A distributed computing environment is dependent on a network to ensure interoperability. This increases the
footprint of the system and increases the potential for attack.
Incorrect Answers:
A: A distributed computing environment is almost infinitely scalable as additional systems can just be added to
the environment.
C: The distributed computing environment has evolved to support heterogeneous systems early in its
emergence. It is thus possible to have systems from different vendors in a distributed computing environment.
D: The support for heterogeneous systems in a distributed computing environment reduces the problem of
usability.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, pp. 70, 1142-1143