Implementing and Maintaining Cisco Technologies Using IOS XR (IMTXR)

Here you have the best Cisco 644-906 practice exam questions

  • You have 77 total questions to study from
  • Each page has 5 questions, making a total of 16 pages
  • You can navigate through the pages using the buttons at the bottom
  • This questions were last updated on December 16, 2025
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Question 1 of 77
Refer to the show environmental power-supply command output exhibit.
Exam 644-906: Question 1 - Image 1
How much power is the system currently using?
Correct Answer: A

Question 2 of 77
Refer to the show environmental power-supply command output exhibit.
Exam 644-906: Question 2 - Image 1
How many additional line cards of the same type that are currently in the system can you safely install and remain redundant in the worse power usage if there is a power supply failure?
Correct Answer: A

Question 3 of 77
What is the maximum long-term normal operating temperature of the Cisco CRS-1, ASR 9000 Series Routers, and XR 12000 Series Routers?
Correct Answer: A

Question 4 of 77
The Cisco CRS 16-Slot Line Card Chassis Site Planning Guide suggests having 48 inches of clearance behind the chassis. What would definitely happen to the system if there were only 28 inches of clearance behind the Cisco CRS 16-Slot Line Card Chassis?
Correct Answer: D

Question 5 of 77
How many planes are there in the Cisco CRS-3 switch fabric?
Correct Answer: D