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(ISC)2

SSCP · Question #1186

Passfilt.dll enforces which of the following? (Choose all that apply)

The correct answer is C. Each password must have a combination of upper case, lower case, numbers and special D. 6 character minimum password length. Passfilt.dll is a legacy Windows password filter that enforces password complexity and a minimum character length for user accounts.

Submitted by jian89· Apr 18, 2026Access Controls

Question

Passfilt.dll enforces which of the following? (Choose all that apply)

Options

  • A8 character minimum password length
  • B90 day password change
  • CEach password must have a combination of upper case, lower case, numbers and special
  • D6 character minimum password length

How the community answered

(25 responses)
  • A
    8% (2)
  • B
    4% (1)
  • C
    88% (22)

Why each option

Passfilt.dll is a legacy Windows password filter that enforces password complexity and a minimum character length for user accounts.

A8 character minimum password length

While an 8-character minimum is a common security best practice, Passfilt.dll's default minimum length is 6 characters.

B90 day password change

Password change frequency, such as a 90-day password change, is typically enforced by account policies within Active Directory or local security policy, not directly by Passfilt.dll.

CEach password must have a combination of upper case, lower case, numbers and specialCorrect

Passfilt.dll specifically enforces password complexity requirements, meaning passwords must include characters from at least three of the four categories: uppercase, lowercase, numbers, and special characters.

D6 character minimum password lengthCorrect

Passfilt.dll also enforces a minimum password length of six characters by default when enabled on a Windows system.

Concept tested: Passfilt.dll password policy enforcement

Source: https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2003/cc781615(v=ws.10)

Topics

#Password Policy#Password Complexity#Windows Security#Passfilt.dll

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