how many questions of 644-906 examcollection?

Q1. What is the maximum long-term normal operating temperature of the Cisco CRS-1, ASR 9000 Series Routers, and XR 12000 Series Routers? 

A. 40C (104F) 

B. 50C (122F) 

C. 55C (131F) 

D. 65C (149F) 

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Q2. What is the effect of configuring "logging disable"? 

A. It will stop the router from sending logs to a syslog server. 

B. It will stop the router from displaying logs on a vty (Telnet or SSH) session. 

C. It will stop the router from displaying logs on a console session. 

D. It will stop the router from archiving logs to a local disk. 

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Q3. Which Cisco IOS XR command would you use to view the actual traffic statistics of packets that are exiting the router in the different configured QoS queues on TenGigE 0/0/0/0 in Cisco IOS XR Software? 

A. show policy-map interface TenGigE 0/0/0/0 

B. show qos interface TenGigE 0/0/0/0 output 

C. show interface TenGigE 0/0/0/0 qos 

D. show interface TenGigE 0/0/0/0 policy-map output 

E. monitor interface TenGigE 0/0/0/0 

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Q4. How many planes are there in the Cisco CRS-3 switch fabric? 

A. 1 

B. 3 

C. 7 

D. 8 

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Q5. In order to determine the hardware and firmware revision of a linecard, what is the correct command that should be invoked? 

A. RP/0/RP0/CPU0:CRS-MC#show version 

B. RP/0/RP0/CPU0:CRS-MC#show platform 

C. RP/0/RP0/CPU0:CRS-MC(admin)#show platform 

D. RP/0/RP0/CPU0:CRS-MC#show diagnostic summary 

E. RP/0/RP0/CPU0:CRS-MC(admin)#show diag details 

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Q6. Refer to the exhibit. 

What is the expected behavior for the following Cisco IOS XR config? 

A. The interface will have IPv6 address 10:10::1/64 only. 

B. The interface will have IPv6 address 20:20::1/64 only. 

C. The interface will have IPv6 address 10:10::1/64 and IPv6 address 20:20::1/64. 

D. The commit will fail. 

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Q7. How many stages of switching are there on a Cisco ASR 9000 Series Router switch fabric? 

A. one 

B. three 

C. four 

D. eight 

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Q8. Referring to the diagram and configuration on Routers XR-1 and XR-2, 

which three statements are correct? (Choose three.) 

A. Router XR-1 can never be a designated router or designated intermediate system. 

B. The transmission of IS-IS packets will be suppressed on interface GigabitEthernet0/0/0/2 on Router XR-1. 

C. The received IS-IS packets from Router XR-2 will be suppressed from being processed. 

D. Router XR-1 and Router XR-2 will form a neighbor adjacency, and Router XR-2 will become the designated router or designated intermediate system. 

E. Router XR-1 will use the incremental shortest path first algorithm when there are minimal topology changes. 

F. Router XR-1 can form a neighbor adjacency over interface GigabitEthernet0/0/0/2 but will not advertise 10.1.1.0/24 in its link-state packets (LSPs). 

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Q9. What is the correct Cisco IOS XR command to configure an autonomous system number 1000 for BGP and to support IPv4, IPv6, and unicast routing? 

A. router bgp 1000 address-family ipv4 unicast ! address-family ipv6 unicast ! ! 

B. router bgp 1000 neighbor 1.1.1.1 remote-as 2000 address-family ipv4 unicast ! address-family ipv6 unicast ! ! 

C. router bgp 1000 address-family vpnv4 unicast ! address-family vpnv6 unicast ! ! 

D. router bgp 1000 neighbor 1.1.1.1 remote-as 2000 address-family vpnv4 unicast ! address-family vpnv6 unicast ! ! 

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Q10. In Cisco IOS XR platforms, IP multicast packets are replicated on which two components? (Choose two.) 

A. switch fabric 

B. ingress line card 

C. egress line card 

D. multicast forwarding ASIC 

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