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Cisco CCENT 640-823

640-823

Exam Code: 640-823

Exam Name: Interconnecting Cisco Networking Devices Part 1

Updated Time: Aug 12, 2026

Q & A: 100 Questions and Answers

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About Cisco 640-823 Exam Materials

Cisco 640-823 certification exam has become a very influential exam which can test computer skills.The certification of Cisco certified engineers can help you to find a better job, so that you can easily become the IT white-collar worker,and get fat salary.

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Cisco 640-823 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Infrastructure Maintenance9%- Basic network troubleshooting
- Device configuration management
- IOS file system and backup
Topic 2: Routing Fundamentals25%- Static and default routing
- Routing concepts and tables
- Router configuration and management
- RIPv2 configuration and verification
Topic 3: Network Fundamentals20%- OSI and TCP/IP models
- TCP/UDP transport layer protocols
- Ethernet technologies and operations
- IPv4 addressing and subnetting
- IPv6 addressing and configuration
Topic 4: LAN Switching Fundamentals26%- Switch operation and configuration
- VLANs and trunking
- Troubleshooting switch issues
- Switch security and management
Topic 5: Infrastructure Services20%- DHCP server and relay
- Basic wireless concepts
- NAT operations and configuration
- DNS and NTP services

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