Explanation/Reference:
Explanation:
The probability or likelihood of the event and the financial impact or magnitude of the event must be assessed first. Duration refers to the length of the event; it is important in order to assess impact but is secondary. Once the likelihood is determined, the frequency is also important to determine overall impact.

Section: INCIDENT MANAGEMENT AND RESPONSE
Explanation:
The main purpose of a post incident review is to identify areas of improvement in the process. Developing a process for continuous improvement is not true in every case. Developing a business case for the security program budget and identifying new incident management tools may come from the analysis of the incident, but are not the key objectives.

Role-based access controls will grant temporary employee access based on the job function to be performed. This provides a better means of ensuring that the access is not more or less than what is required. Discretionary, mandatory and lattice-based access controls are all security models, hut they do not address the issue of temporary employees as well as role-based access controls.

Explanation
Penetration testing is the best way to assure that perimeter security is adequate. An intrusion detection system (IDS) may detect an attempted attack, hut it will not confirm whether the perimeter is secured. Minimum security baselines and applying vendor recommended settings are beneficial, but they will not provide the level of assurance that is provided by penetration testing.

Explanation/Reference:
Explanation:
The cost of implementing security controls should not exceed the worth of the asset. Annualized loss expectancy represents the losses drat are expected to happen during a single calendar year. A security mechanism may cost more than this amount (or the cost of a single incident) and still be considered cost effective. Opportunity costs relate to revenue lost by forgoing the acquisition of an item or the making of a business decision.