Policies are high-level statements, beliefs, goals and objectives and the general means for their attainment for a specific subject area. Standards are mandatory activities, action, rules or regulations designed to provide policies with the support structure and specific direction they require to be effective. Guidelines are more general statements of how to achieve the policies objectives by providing a framework within which to implement procedures. Procedures spell out the specific steps of how the policy and supporting standards and how guidelines will be implemented. Source: HARE, Chris, Security management Practices CISSP Open Study Guide, version 1.0, april 1999.

The correct answer is "Assurance procedures".
Accountability, answer a, refers to the ability to determine the actions and behaviors of a single
individual within a system and to identify that individual. Answer "Authentication procedures"
involves testing or reconciling of evidence of a user's identity
in order to establish that identity. Answer "Trustworthy procedures" is a distracter.

It is considered to be a technical control.
Logical is synonymous with Technical Control. That was the easy answer.
There are three broad categories of access control: Administrative, Technical, and Physical.
Each category has different access control mechanisms that can be carried out manually or
automatically. All of these access control mechanisms should work in concert with each other to
protect an infrastructure and its data.
Each category of access control has several components that fall within it, as shown here:
Administrative Controls
Policy and procedures
Personnel controls
Supervisory structure
Security-awareness training
Testing
Physical Controls
Network segregation
Perimeter security
Computer controls
Work area separation
Data backups
Technical Controls
System access
Network architecture
Network access
Encryption and protocols
Control zone
Auditing
The following answers are incorrect : Screening of personnel is considered to be an administrative control Development of policies, standards, procedures and guidelines is considered to be an administrative control Change control procedures is considered to be an administrative control. Reference : Shon Harris AIO v3 , Chapter - 3 : Security Management Practices , Page : 52-54

A hardware RAID implementation is usually platform-independent.
Source: KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten
Domains of Computer Security, 2001, John Wiley & Sons, Page 67.