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Updated: Sep 28, 2026
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Cisco 640-823 Exam Overview:
| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Interconnecting Cisco Networking Devices Part 1 (ICND1) |
| Exam Number: | 640-823 |
| Real Exam Qty: | 45–55 (varies) |
| Available Languages: | English |
| Exam Duration: | 90 minutes |
| Passing Score: | Variable scaled score (commonly ~804/1000, Cisco scaled scoring system) |
| Related Certifications: | Cisco CCNA Routing and Switching CCENT (legacy) |
| Exam Price: | USD 125 (historical pricing; retired exam) |
| Exam Format: | Simlet, Multiple choice, Simulation |
| Certificate Validity Period: | 3 years (certification validity after passing, legacy CCENT policy) |
| Recommended Training: | Cisco Networking Academy Cisco Official Training (legacy ICND1 / CCENT resources) |
| Exam Registration: | Pearson VUE Cisco Exams Cisco Certification Registration |
| Exam Way: | Computer-based exam at authorized Pearson VUE testing centers or online proctored (legacy availability may vary) |
| Pre Condition: | No formal prerequisites (entry-level certification). Basic understanding of computer networks recommended. |
| Official Syllabus URL: | https://www.cisco.com/c/en/us/training-events/training-certifications/certifications/entry/ccent.html |
Cisco 640-823 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Networking Fundamentals | - Basic networking concepts - OSI and TCP/IP models - Network topologies and types |
| Topic 2: Infrastructure Maintenance | - Troubleshooting connectivity issues - Device management and IOS commands |
| Topic 3: LAN Switching Technologies | - Switch operation and MAC address table - VLANs and trunking concepts |
| Topic 4: Routing Technologies | - Routing table fundamentals - Static routing |
| Topic 5: Infrastructure Services | - IP addressing and subnetting - DHCP and NAT basics |
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