Cisco 644-906 - Implementing and Maintaining Cisco Technologies Using IOS XR
- Exam Code: 644-906
- Exam Name: Implementing and Maintaining Cisco Technologies Using IOS XR
- Updated: Aug 04, 2026
- Q & A: 77 Questions and Answers
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| Exam Name | Implementing and Maintaining Cisco Technologies Using IOS XR |
| Number of Questions | 55-65 |
| Recommended Training | Implementing and Maintaining Cisco Technologies Using IOS XR (IMTXR) |
| Exam Code | 644-906 IMTXR |
| Passing Score | Variable (750-850 / 1000 Approx.) |
| Sample Questions | Cisco 644-906 Sample Questions |
| Duration | 75 minutes |
| Exam Price | $300 USD |
| Exam Registration | PEARSON VUE |
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| Section | Objectives |
|---|---|
| Routing Protocols | - OSPF configuration and optimization - IS-IS implementation - BGP configuration and policy control |
| Infrastructure Services | - Logging and troubleshooting tools - System management and monitoring |
| Multicast | - PIM sparse mode configuration - Multicast routing in service provider networks |
| Quality of Service (QoS) | - QoS models and architecture - Traffic classification and marking - Congestion management and avoidance |
| MPLS and VPN Services | - L3VPN implementation - Traffic engineering concepts - MPLS label switching fundamentals |
| IOS XR Architecture and Platform Fundamentals | - IOS XR system architecture overview - Device boot process and file system - Process management and control/data plane separation |
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