A DBMS is called for when the required skilled programming
resources are not available, information to be stored and accessed is
common to many organizational business units, the processing
requirements change frequently and timely responses are required
for queries on the data.

Because it is rarely possible or cost effective to eliminate all risks, an attempt is made to reduce risks to an acceptable level through the risk assessment process. This process
allows, from a set of potential risks (whether likely or not), to come up with a set of identified,
possible risks.
The implementation of security controls allows reducing the identified risks to a smaller set of
residual risks. Because these residual risks represent the complete set of situations that could
affect system performance, the scope of the contingency plan may be reduced to address only this
decreased risk set.
As a result, the contingency plan can be narrowly focused, conserving resources while ensuring
an effective system recovery capability.
Source: SWANSON, Marianne, & al., National Institute of Standards and Technology (NIST), NIST
Special Publication 800-34, Contingency Planning Guide for Information Technology Systems,
December 2001 (page 7).

CSMA/CA sends out a message to all other computers indicating it is going to send out data. CSMA/CA or token ring networking uses this approach to reduce the amount of data collisions.
Note: When computers use the carrier sense multiple access with collision detection (CSMA/CD) protocols, they monitor the transmission activity, or carrier activity, on the wire so that they can determine when would be the best time to transmit data.
Carrier sense multiple access with collision avoidance (CSMA/CA) is an access method where each computer signals its intent to transmit data before it actually does so. pg 390-391 Shon Harris All-In-One CISSP Certification

A computer facility with electrical power
and HVAC, with workstations and servers available to be brought
on-site when the event begins and no applications installed, is a cold
site.
* Answer "A computer facility with electrical power and HVAC, all needed applications installed and configured on the file/print servers, and enough workstations present to begin processing" is a hot site
*answer "A computer facility available with electrical power and HVAC and some file/print servers, although the applications are not installed or configured and all of the needed workstations may not be on site or ready to begin processing" is a warm site. *Answer "A computer facility with no electrical power or HVAC" is just an empty room.

Answer "Object-oriented requirements analysis" defines classes of objects and their
interactions.
Answer "Object-oriented analysis", object-oriented analysis, is the process of understanding and
modeling of a specific problem within a problem domain.
Object-oriented designis design in which the object is the basic unit of modularity and objects are
instantiations of a class.