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Updated: Sep 01, 2026
No. of Questions: 62 Questions & Answers with Testing Engine
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Cisco 642-551 Exam Overview:
| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Securing Cisco Network Devices (SND) |
| Exam Number: | 642-551 |
| Related Certifications: | CCIE Security CCNP Security |
| Passing Score: | 825 (scale 300–1000) |
| Available Languages: | English |
| Real Exam Qty: | 62 |
| Exam Format: | Simulation, Multiple Choice |
| Exam Price: | $200–$250 USD (retired rate) |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | 3 years |
| Recommended Training: | Securing Cisco Network Devices (SND) course |
| Exam Registration: | Pearson VUE |
| Sample Questions: | Cisco 642-551 Sample Questions |
| Exam Way: | Onsite at Pearson VUE testing centers (retired) |
| Pre Condition: | Valid CCNA certification or equivalent knowledge |
| Official Syllabus URL: | https://www.cisco.com |
Cisco 642-551 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Cisco PIX Security Appliance Basics | 15% | - Basic configuration, NAT, and access rules - Firewall concepts and PIX architecture |
| Securing Layer 2 Network Infrastructure | 20% | - Layer 2 security risks and mitigation - Implementing port security, VLAN security, and storm control |
| Cisco Security Portfolio Overview | 15% | - Cisco security solutions and product positioning - Network security threats and vulnerabilities |
| Secure Remote Access with VPN | 10% | - VPN fundamentals and IPsec basics - VPN 3000 Concentrator overview |
| Cisco IPS and HIPS Technologies | 15% | - Intrusion prevention concepts and deployment - Cisco IOS IPS and Cisco Security Agent overview |
| Securing Cisco IOS Routers | 25% | - Access control lists (ACLs) and traffic filtering - Router hardening and AAA implementation - Control plane security and anti-spoofing |
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