644-906 exam dumps

Cisco 644-906 Value Package

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  • Exam Code: 644-906
  • Exam Name: Implementing and Maintaining Cisco Technologies Using IOS XR
  • No. of Questions: 77 Questions and Answers
  • Updated: Jun 02, 2026

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Understanding functional and technical aspects of Operating System (644-906 SPAUTO)

The following will be asked from you in the CISCO 644-906 exam dumps:

  • Understand what is target config
  • Core file configuration location including hard drive and FTP
  • Understanding types of packages (Mini.VM)
  • Check how much memory a process is using
  • Committing the configuration (replacing the configuration)
  • Understand when a semantic check is done
  • Understand what configuration is in the admin plane
  • Show where certain processes are running
  • Using TFTP, FTP, USB thumb drive, and hard drive as the source
  • How to use Show LPTS commands
  • Committing the configuration (using the commit confirm feature)
  • Understand what configuration is in the exec plane
  • Activate PIEs or SMUs
  • Understanding types of packages (optional PIEs)
  • Understand when a syntax check is done
  • Assigning user privilege to cisco-support
  • Check which packages are active
  • Debug commands with ACL filtering
  • See what install requests are currently active
  • Committing the installation path
  • Understanding security certificate in PIEs and SMUs
  • Base assumption of EEM knowledge - understand what is possible/not possible
  • Check how much CPU a process is using
  • Understanding how task-based authorization work
  • With activate flag
  • How to find a blocked process
  • Deactivate PIEs or SMUs
  • Configure interfaces before the physical interface is available)
  • Understand between admin user versus exec username
  • Initial or recovery software installation (Turboboot Mini.VM file)
  • Show configuration history
  • Understand the default VRF
  • Assigning user privilege to root-system
  • Going back to a previous configuration
  • Understand IOS-XR versioning and installation restrictions
  • Using TAR file
  • Check which packages are committed
  • How to check processes like state, number of restarts, job id, pid, tid
  • Understand P versus PX images and the hardware they support
  • Using the parser with pipe, include, exclude, begin, regex
  • Showing configuration IDs and labels
  • Committing the configuration (with labels and comments)
  • Committing the configuration (atomic versus best effort)
  • Locate core files and moving them to a server
  • Understanding types of packages (Mini.PIE)
  • Using source flag
  • How to look at the memory utilization on the route processor
  • Understanding types of packages (SMUs)
  • Loading configuration
  • Remove inactive packages, PIEs, or SMUs
  • Committing the configuration (show config fail)
  • Understand protected memory space versus shared memory and which area uses it
  • How to use Show Tech Support commands
  • Initial or recovery software installation (ROMMON variables)
  • Understand about LPTS policer
  • How to perform process restart
  • How to look at the memory utilization on the line card
  • Assigning user privilege to root-lr
  • Understand differences between owner and non-owner SDR in access to admin plane and exec plane
  • Understand what is active config
  • Check installation log
  • Understand what is LPTS
  • Show policer values and drop counts in LPTS

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How to Prepare For Implementing and Maintaining Cisco Technologies Using IOS XR (IMTXR)

Preparation Guide for Implementing and Maintaining Cisco Technologies Using IOS XR (IMTXR)

Introduction

This exam tests a candidate's knowledge of implementing, verification testing, and maintaining Cisco core and edge technologies, using the IOS XR based router platforms, which include the CRS, ASR 9000, and the XR12000 routers. The Implementing and Maintaining Cisco Technologies using IOS XR (IMTXR) (646-906) exam is the exam associated with the IOS XR Specialist certification. A 90-minute exam with 65‒75 questions, the exam tests a candidate's knowledge of implementing, verification testing, and maintaining Cisco core and edge technologies, using the IOS XR based router platforms, which include the CRS, ASR 9000, and the XR12000 routers. CISCO 644-906 practice exams and CISCO 644-906 practice test will help to understand and memorize the concepts and detailed answers and solutions.

Reference: http://www.cisco.com/c/en/us/training-events/training-certifications/exams/current-list/specialist-imtxr.html

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