Section: Volume D
Explanation

The best approach for performing a business impact analysis (BIA) of a supply-chain management application is to interview groups of key stakeholders, as this allows the risk practitioner to obtain direct and detailed information on the business processes, dependencies, resources, and requirements that are supported by the application. The risk practitioner can also clarify any doubts, address any concerns, and validate any assumptions during the interviews. The BIA is a process of identifying and analyzing the potential effects of disruptive events on the critical business functions and objectives. The BIA helps to determine the recovery priorities, strategies, and targets for the business continuity plan. The other options are not the best approaches for performing a BIA, although they may be useful or complementary methods. Reviewing the organization's policies and procedures can provide some background and context for the BIA, but it may not reflect the current or accurate situation of the business processes and the application. Circulating questionnaires to key internal stakeholders can be a convenient and efficient way to collect some data for the BIA, but it may not capture the complexity and nuances of the business processes and the application. Accepting IT personnel's view of business issues can be biased and incomplete, as they may not have the full understanding or perspective of the business needs and expectations. References = Risk and Information Systems Control Study Manual, Chapter 2: IT Risk Identification, page 58.

The risk register element that is most likely to be updated if the attack surface or exposure of an asset is reduced is the likelihood rating, as this reflects the probability or frequency of a risk event occurring. The attack surface or exposure of an asset is the measure of the extent and accessibility of the asset to potential threats or attackers. If the attack surface or exposure of an asset is reduced, the likelihood of the asset being compromised or damaged by a risk event is also reduced. Therefore, the likelihood rating of the risk should be updated accordingly. The other options are not the risk register elements that are most likely to be updated if the attack surface or exposure of an asset is reduced, although they may be affected or influenced by it.
Control effectiveness is the measure of how well the risk controls reduce the risk level or achieve the control objectives. Assessment approach is the method or technique used to identify, analyze, and evaluate the risks.
Impact rating is the measure of the magnitude or severity of the consequences of a risk event on the asset or the organization. References = Risk and Information Systems Control Study Manual, Chapter 2: IT Risk Identification, page 54.

is incorrect. Low risks are the risk that results in certain unsuccessful goals.