Cisco 640-606 : Support 2.0 (CIT)

640-606 real exams

Exam Code: 640-606

Exam Name: Support 2.0 (CIT)

Updated: Sep 08, 2026

Q & A: 239 Questions and Answers

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Cisco 640-606 Exam Syllabus Topics:

SectionObjectives
Topic 1: Addressing and NAT Problems- IP address issues
  • 1. Subnetting and addressing conflicts
  • 2. NAT and PAT troubleshooting
Topic 2: Local and Wide Area Network Troubleshooting- WAN technologies
  • 1. ISDN and remote connections troubleshooting
  • 2. Frame Relay and PPP issues
- LAN technologies
  • 1. Ethernet and VLAN troubleshooting
  • 2. Switching problems and solutions
Topic 3: Troubleshooting Principles and Tools- Troubleshooting methodology
  • 1. Approaches to isolating network faults
  • 2. Use of diagnostic tools (ping, traceroute, debug)
Topic 4: OSI and Protocol Issues- Network layer troubleshooting
  • 1. TCP/IP and protocol stack problems
  • 2. IP routing and reachability issues
Topic 5: Router and Switch Troubleshooting- Device operational faults
  • 1. Hardware diagnostics and LEDs
  • 2. Configuration and interface errors
Topic 6: Advanced Network Services- AAA and security troubleshooting
  • 1. RADIUS and TACACS+ issues
  • 2. Authentication/Authorization problems

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    Support 2.0 (CIT)

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