Throughout 2026, Prep4SureReview keeps refining its 642-591 question bank with verified answers and daily update checks, so the Cisco Implementing Cisco NAC Appliance material on your screen is always the current edition — no printing, no shipping, no waiting.
Cisco 642-591 Exam Overview:
| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Implementing Cisco NAC Appliance (CANAC) |
| Exam Number: | 642-591 |
| Exam Format: | Multiple Choice Multiple Answer, Scenario-Based, Multiple Choice Single Answer |
| Related Certifications: | Cisco Certified Security Professional (CCSP) Cisco NAC Appliance Specialist |
| Exam Price: | USD 200-250 (historical, retired) |
| Real Exam Qty: | 55-65 |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | 3 years (retired since August 2012) |
| Passing Score: | Approx 750 / 1000 scale |
| Available Languages: | English |
| Recommended Training: | Cisco authorized training: Implementing Cisco NAC Appliance |
| Exam Registration: | Pearson VUE (historical) |
| Sample Questions: | ![]() |
| Exam Way: | Onsite at Pearson VUE authorized test centers; retired, no longer available |
| Pre Condition: | No mandatory prerequisites; CCNA Security or equivalent networking/security knowledge recommended |
| Official Syllabus URL: | https://www.cisco.com/c/en/us/training-events/training-certifications/exams/retired.html |
Cisco 642-591 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Cisco NAC Appliance Architecture | 20% | - Solution components - In-band vs Out-of-band deployment modes - Clean Access Manager (CAM) functions - Clean Access Agent (CAA) operation - Clean Access Server (CAS) functions |
| Topic 2: Endpoint Compliance and Posture Assessment | 20% | - Remediation and quarantine flow - Custom compliance policies - OS and patch level checks - Posture validation rules - Antivirus and antispyware verification |
| Topic 3: Network Access Enforcement | 15% | - Quarantine and production access - High availability and failover - VLAN assignment and segmentation - Traffic filtering and policies |
| Topic 4: User Authentication and Authorization | 20% | - Role-based access control - Local user database - LDAP and Active Directory integration - Guest access configuration - RADIUS authentication |
| Topic 5: Installation and Initial Configuration | 20% | - Licensing and activation - Administrative access and management - Network connectivity configuration - Initial setup of CAM and CAS - Hardware and software requirements |
| Topic 6: Monitoring, Maintenance and Troubleshooting | 5% | - Common troubleshooting scenarios - System backup and restore - Logging and reporting |
642-591 Exam Facts, Digital Convenience and Global Support
- Cisco NAC Appliance Architecture (20%)
- Installation and Initial Configuration (20%)
- Network Access Enforcement (15%)







