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: Jun 01, 2026   Q&As: 77 Questions and Answers

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

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

  • Install appropriate PDU for chassis
  • Showing current FPD version information
  • Configure Auto FPD
  • Upgrade FPD and ROMMON Upgrade
  • Identify cable management
  • Differentiate between single and multi-chassis
  • Upgrading FPDs and ROMMONs
  • Show card status via show platform
  • Use proper grounding for installation
  • Describe ASR9000 fabric
  • Show cards via show diagrams
  • Understanding what is a FPD.PIE
  • Describe CRS air-flow
  • Recommend rack space requirements
  • Identify components of CRS fabric
  • Identify CRS switch fabric
  • Understand FPD versus ROMMON
  • Identify ASR9000 RSP
  • Identify management interface
  • Show environmental alarm values
  • Recommend environmental levels for system installation
  • Identify ASR9000 line cards
  • Recommend PDU as a function of facility
  • Identify ASR9000 chassis
  • Identify CRS chassis
  • Identify PLIM
  • Gather system environmental output
  • Identify MSC
  • Difference between admin versus exec plane for show platform
  • Difference between admin versus exec plane for show platform
  • Identify RP CRS/ASR9000
  • Clear environmental alarm
  • Show power alarm values
  • Identify CRS SIP/SPA
  • Identify ASR9000 SIP-700/SPA
  • Understand what is Parallel FPD
  • Monitor system power level
  • Verify system-detected environment is within tolerance levels
  • Identify ASR9000 PDU
  • Show inventory of the system
  • Show fan status
  • Show power usage
  • Describe ASR9000 air-flow

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

Exam Topics

The following are covered in CISCO 644-906 practice exams and CISCO 644-906 practice test:

  • Control Plane
  • Data Plane
  • Platform
  • Operating System
  • Management Plane

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Understanding functional and technical aspects of Control Plane (644-906 SPAUTO)

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

  • Enable RSVP on interfaces
  • Configuring terminals for logging display (term mon)
  • Configure iBGP neighbors with the typical configuration to use loopback addresses for peering
  • Configure BGP to support IPv4 routing
  • Configuring logging facility
  • Configure BGP to support IPv6 routing
  • Compare to regular show command
  • Configure MoFRR
  • Use neighbor-groups for identical configuration sections on multiple peers
  • Understand the flow of packets through a router
  • Configure additional interfaces to be part of non-backbone area
  • Configure one iBGP peer to support 6PE type functionality by adding addressfamily IPv6 labeled-unicast
  • Verify vty access-group configuration
  • Display a specific entry and explain AS path and next-hop information
  • Verify AAA permissions upon command failure (i.e., debug aaa)
  • Configure P2MP-TE for IP Multicast
  • Enable some but not all of the IPv4 enabled interfaces for IPv6 routing
  • Enable ISIS for IPv4 unicast routing
  • Apply ACLs in debug commands
  • Turn and debugging for ISIS adjacencies and explain the information shown
  • Determine status if interfaces are configured for ISIS
  • Configure Multicast NSF
  • Configure router to log neighbor events
  • Determine how much memory the BGP process uses Configure RPL
  • Determine status of OSPF interfaces
  • Clear interface counters
  • Configure interfaces for ISIS routing
  • Configure an autonomous system number for BGP to use
  • Configure a simple pass_all policy for those eBGP neighbors
  • Understand and monitor interface counters
  • Create a route policy that adds a community where the community is used as a parameter when the policy is called
  • Implement ACLs to filter traffic on an interface
  • Configuring AAA command authorization - Using TACACS+ and local as fallback
  • Add two VRFs into BGP and redistribute static routes into BGP for VPNv4
  • Securing vty line and vty access
  • Configure OSPF to support traffic engineering extensions
  • Configure router to run LDP
  • Create a route policy that checks for an AS from the AS-set and adds a community for matching routes
  • Configure one iBGP neighbor to exchange both IPv4 and IPv6 prefixes over an IPv4 session
  • Configuring local logging device/archiving
  • Create a route-policy that uses an inline prefix-set and changes the local preference when a match is found
  • Configure neighbor logging so adjacency changes can be monitored
  • Configure eBGP neighbors for IPv4 routing
  • Execute a show bgp command using a route-policy to modify the output.
  • Implementing TACACS+ - assigning tasks groups and privileges
  • Configuring exec timeout
  • Configuring logging buffer
  • Execute show command to verify status of LDP neighbors
  • Configure static routes for IPv4 unicast in the global table
  • Verify that communities are added as expected
  • Configure static routes in for IPv4 unicast in two different VRFs
  • Configure PIM-SM, PIM-SSM, PIM-SSM range
  • Re-sequence an ACL
  • Modify interface counter load interval
  • Define an AS-set for use in RPL
  • Modify an existing applied ACL
  • Describe the difference in processing of transit packets versus locally destined packets
  • Configure MSDP for interconnecting PIM-SM domains
  • Enable LDP on interfaces
  • Display the peer summary status for IPv4 and IPv6
  • Enable ISIS for IPv6 unicast routing
  • Configure non-default metric on some interfaces
  • Understand the information stored in a forwarding table entry
  • Display the IPv4 unicast route table
  • Configure Multicast VPN
  • Configure the ISIS NET
  • Configure interfaces to be part of the backbone area
  • Determine the status of the routing adjacencies
  • Configuring AAA command accounting
  • Configuring syslog server host as logging destination
  • Monitor ACL counters
  • Configuring line templates, vty pools
  • Configure one iBGP neighbor as an IPv6-only neighbor with IPv6 peer addresses
  • Determine status of neighbors
  • Troubleshoot packet drops
  • Display OSPF database and determine which links are present
  • Add VPNv4 capability to one iBGP peer
  • Configure static-RP, Auto-RP and BSR for PIM-SM
  • Display the topologies for IPv4 and IPv6. Why are they different?
  • Monitoring logging buffer and filtering messages
  • Configuring AAA authentication - using TACACS+ and local as fallback
  • Display the IPv4 BGP table

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