Here is the written test. A good references for the competencies is https://www.canada.ca/en/treasury-board-secretariat/services/professional-development/key-leadership-competency-profile/examples-effective-ineffective-behaviours.html under the supervisor / manager section.

The other sources is Certified Internal Audit regarding process and procedures.

Here is quick link to National defense and Canadian Armed forces.https://www.canada.ca/en/department-national-defence.html

Position Title: Team Leader
Group and Level: AS-06/FI-03
Department: Assistant Deputy Minister (Review Services) – Director General Audit
Location: Ottawa, ON
Dear candidate,
This is further to your application to the above-mentioned appointment process.
Our selection committee has determined that you meet the education and experience criteria required for screening. We are therefore pleased to invite you to participate in an on-line exam to further assess the following qualifications as outlined on the Statement of Merit Criteria:
KNOWLEDGEK1. Knowledge of assurance and auditing standards, policies, directives, practices and techniques in use in the Canadian federal government
K2. Knowledge of the mandate and organizational structure and priorities of the Department of National Defence and the Canadian Armed Forces

COMPENTENCIES
CC1. Judgement, thinking things through and strategic thinking
CC5. Support innovation and change

ABILITIES:
A2. Ability to communicate effectively in writing
A3. Ability to apply a variety of audit, evaluation, process review, or investigative techniques
The testing session is scheduled as follows (Eastern Standard Time):

The following are the details of the test that may be based on.

The online test is scheduled for the 3 Feb from 9-12 noon.. I think, in most of the case the situational questions will be asked based on the following:

Duties:
As an audit team leader, you will:
• Supervise a small team, to plan and execute engagements in accordance with quality standards and project timelines.
• Coach and mentor junior members.
• Develop partnerships and work collaboratively with peers, partners and stakeholders to execute engagements that make value-added recommendations.
• Contribute to the well-being, strategic management and the continuous improvement of the internal audit organization.

Audit Team Leader (AS-06)
EX1.Minimum of four (4) years of experience performing all phases (planning, conduct and reporting) of oversight activities, audit engagements or oversight- related professional practices projects
EX2. Experience in preparing written materials for management (Director or equivalent level and above) that include advice and recommendations such as but not limited to briefing notes, presentations, and reports
EX3. Minimum of three (3) years of experience synthesizing information from multiple sources to identify issues and provide relevant insights, advice and/or recommendations
EX4. Experience in presenting and communicating results to management (Director or equivalent level and above)

Working Environment:
-conducting audits, providing advice or supporting the professional practice audit function – your efforts within the internal audit function will contribute to strengthening the governance, risk management and control processes in support of the mandate of the Department
-the internal audit function provides independent, objective assurance, advice, and insights related to the effectiveness and efficiency of DND/CAF operations and activities; and the soundness of risk management, internal controls and governance processes
-Roles and responsibilities encompass developing the Risk-based Audit Plan, monitoring and reporting on the progress of management action plans, supporting the quality assurance and improvement program and the Departmental Audit Committee as well as enabling a variety of strategic planning activities.

Are you a highly motivated and action-oriented team player?
Do you thrive in an environment of changes and growth?
Are you eager to contribute and positively influence your workplace?
Do you want to have strategic input, affect change, and add value/make a difference?

Competencies: Audit Team Leader (AS-06)
CC1. Judgement, thinking things through and strategic thinking
CC2. Mobilizing people (Ability to supervise a small team)
CC3. Uphold integrity, respect and public service values and ethics
CC4. Collaboration and working effectively with others
CC5. Support innovation and change
CC6. Being action-oriented and achieving results

Abilities:

A1. Ability to communicate effectively orally
A2. Ability to communicate effectively in writing
A3. Ability to apply a variety of audit, evaluation, process review, or investigative techniques