When it comes to magnetic media sanitization, what difference can be made between clearing and purging information?

• A.Clearing completely erases the media whereas purging only removes file headers, allowing the recovery of files.
• B.Clearing renders information unrecoverable by a keyboard attack and purging renders information unrecoverable against laboratory attack.
• C.They both involve rewriting the media.
• D.Clearing renders information unrecoverable against a laboratory attack and purging renders information unrecoverable to a keyboard attack.

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What is the name of the first mathematical model of a multi-level security policy used to define the concept of a secure state, the modes of access, and rules for granting access?

• A.Clark and Wilson Model
• B.Harrison-Ruzzo-Ullman Model
• C.Rivest and Shamir Model
• D.Bell-LaPadula Model

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Which of the following phases of a system development life-cycle is most concerned with maintaining proper authentication of users and processes to ensure appropriate access control decisions?

• A.Development/acquisition
• B.Implementation
• C.Operation/Maintenance
• D.Initiation

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Which of the following statements pertaining to PPTP (Point-to-Point Tunneling Protocol) is incorrect?

• A.PPTP allow the tunnelling of any protocols that can be carried within PPP.
• B.PPTP does not provide strong encryption.
• C.PPTP does not support any token-based authentication method for users.
• D.PPTP is derived from L2TP.

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FTP, TFTP, SNMP, and SMTP are provided at what level of the Open Systems Interconnect (OSI) Reference Model?

• A.Application
• B.Network
• C.Presentation
• D.Transport

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