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Cisco 644-906 Exam Certification Details:
| Exam Price | $300 USD |
| Number of Questions | 55-65 |
| Exam Name | Implementing and Maintaining Cisco Technologies Using IOS XR |
| Exam Registration | PEARSON VUE |
| Recommended Training | Implementing and Maintaining Cisco Technologies Using IOS XR (IMTXR) |
| Sample Questions | Cisco 644-906 Sample Questions |
| Exam Code | 644-906 IMTXR |
| Passing Score | Variable (750-850 / 1000 Approx.) |
| Duration | 75 minutes |
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Cisco 644-906 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Automation and Programmability (Foundational) | - Model-driven telemetry overview - Basic IOS XR automation concepts |
| Topic 2: IOS XR System Architecture | - Process separation and high availability design - Platform architecture and operating model |
| Topic 3: MPLS and Service Provider Technologies | - Traffic engineering concepts - L3VPN and L2VPN services - MPLS forwarding and label distribution |
| Topic 4: Layer 2 Technologies | - Ethernet switching concepts in IOS XR - VLANs and trunking |
| Topic 5: Layer 3 Routing | - BGP design and policy control - OSPF configuration and optimization - IS-IS implementation |
| Topic 6: Quality of Service (QoS) | - QoS classification and marking - Queuing and congestion management |
| Topic 7: System Operations and Troubleshooting | - Troubleshooting routing and forwarding issues - Monitoring IOS XR systems |



