Cisco 642-503 - Securing Networks with Cisco Routers and Switches
- Exam Code: 642-503
- Exam Name: Securing Networks with Cisco Routers and Switches
- Updated: Sep 15, 2026
- Q & A: 56 Questions and Answers
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| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Securing Networks with Cisco Routers and Switches (SNRS) |
| Exam Number: | 642-503 |
| Related Certifications: | CCSP CCNP Security (legacy) |
| Real Exam Qty: | 55-65 |
| Exam Price: | USD 150 |
| Passing Score: | Approx. 800-850 / 1000 (scale 300-1000, not officially published) |
| Certificate Validity Period: | 3 years |
| Available Languages: | English |
| Exam Duration: | 90 minutes |
| Exam Format: | Multiple Choice Single Answer, Multiple Choice Multiple Answer, Testlets, Drag and Drop, Simulations |
| Recommended Training: | CCSP SNRS Exam Certification Guide |
| Exam Registration: | Pearson VUE (Legacy) |
| Sample Questions: | ![]() |
| Exam Way: | Onsite at authorized Pearson VUE testing centers; RETIRED (no longer offered) |
| Pre Condition: | Recommended: CCNA-level knowledge of Cisco routing, switching, and basic security concepts; experience with Cisco IOS |
| Section | Weight | Objectives |
|---|---|---|
| Secure Layer 2 Infrastructure | 20% | - Private VLAN configuration - Configure DHCP snooping and Dynamic ARP Inspection - Mitigate VLAN hopping and STP attacks - Implement port security |
| Secure Router Administrative Access | 20% | - Configure AAA with RADIUS/TACACS+ - Secure remote management using SSH - Password policies and privilege levels - Role-based CLI access control |
| Attack Mitigation and Monitoring | 20% | - NTP authentication - Syslog and SNMP security configuration - Mitigate DoS and spoofing attacks - IOS security best practices and lockdown |
| Access Control and Traffic Filtering | 20% | - Standard and extended ACLs - IPsec and Easy VPN configuration - Secure routing protocols - Reflexive and time-based ACLs |
| Cisco IOS Security Features | 20% | - Control Plane Policing (CoPP) - Implement IOS Firewall and CBAC - Security Device Manager (SDM) usage - Authentication proxy |
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The Cisco Securing Networks with Cisco Routers and Switches blueprint covers these principal domains:
The remaining domains appear in the full official outline, all of which our bank addresses.
As of the latest information, the passing score for the 642-503 exam is Approx. 800-850 / 1000 (scale 300-1000, not officially published) and the fee is USD 150. Cisco can revise both, so confirm the current figures on the official site before registering.
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Cisco recommends these official training options:
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Cisco lists the following prerequisites for the Cisco Securing Networks with Cisco Routers and Switches: Recommended: CCNA-level knowledge of Cisco routing, switching, and basic security concepts; experience with Cisco IOS.
Per current exam information, the 642-503 exam includes 55-65 questions and allows 90 minutes minutes. Timed practice beforehand makes the format feel routine on the day.
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