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2021 Sep ccie service provider exam code:
Q111. Which are the three characteristics of SDR? (Choose three)
A. The logical router can span across chassis.
B. Each logical router has a distinct fabric and system controller module.
C. Owner SDR can be reloaded, without affecting all non-SDRs.
D. The logical router has dedicated route processor.
E. The logical router can share line cards.
F. The fabric and system controller module are shared by all logical routers.
Q112. An operations engineer wants to manually optimize the MPLS Traffic Engineering tunnels. Which Cisco IOS EXEC command should the engineer apply?
A. tunnel mpls traffic-eng autoroute destination
B. tunnel mpls traffic-eng path-option lowest _number dynamic
C. mpls traffic-eng reoptimize lockdown
D. mpls traffic-eng multicast-intact
E. mpls traffic-eng reoptimize
Q113. Which are the four main functions of the Cisco IOS XR System Manager? (Choose four)
A. performs system monitoring
B. is the main IOS XR component for device drivers and software installation management
C. starts, restarts, and terminates processes in response to user configuration or RP failover
D. is responsible for the message-passing "bus" for interprocess communication
E. acts as a central repository for all process-related information
F. performs health checks
G. initiates disaster recovery based on the process health
H. invokes a dumper to collect a core dump when a process terminates abnormally
Q114. Which is the main goal of BGPsec regards to improve BGP security?
A. Reduces risk of improper route propagation from unauthorized AS numbers
B. Configures BGP route verification by storing routes in a database used to validate AS numbers
C. Adds encryption to route propagation outside the iBGP AS
D. Increases legitimacy and authenticity of BGP advertisements
Explanation: Reference: https://tools.ietf.org/html/draft-lepinski-bgpsec-overview-00
Q115. Refer to the exhibit. Router RT1 has three equal-cost paths back to the source. Which configuration should be applied in order to load-balance the multicast traffic across all three links.
A. Create three static multicast routes where each pointing out to one or three interfaces.
B. Enable PIM multipath.
C. Create a tunnel interface between RT1 and RT2. Enable PIM on the interface tunnel and disable PIM on the three interfaces part of equal-cost path between RT1 and RT2.
D. PIM load balance is not possible. PIM only chooses one interface for RFC check and prunes the other interfaces.
Regenerate cisco 400-201:
Q116. DRAG DROP
Drag and drop the subslot of the SIP-800 card that is used on Cisco CRS routers on the left to the correct PUM ASIC process on the right.
Q117. Due to recent acquisitions, a company's MPLS infrastructure is growing very quickly. Concerns arise about labeling each and every IP address on the service provider core network. The IP address space is designed as per following:
. Service provide ip address range is: 10.0.0.0/16
. All loopback addresses use subnet mask /32
. 10.0.0.0/24 range is used for loopback addresses
. All other subnet masks used for links are /24 and /25
Which command would significantly reduce the label allocations without compromising LDP functionalities?
A. ip prefix-list Llst1 deny 10.0.0./16 le 20 ge 25
mpls Idp label
allocate global prefix-list List1
B. access-list 1 permit 10.0.0.0 0.0.255.255
mpls Idp neighbor 10.0.0.1 labels accept 3
C. mpls Idp label
allocate global host-routes
D. mpls Idp password required for 10
access-list 10 permit 10.0.0.1
access-list 10 permit 10.0.0.2
access-list 10 permit 10.0.0.3
Q118. Refer to the exhibit.
A network engineer is troubleshooting PTP on Cisco ASR 9000 router. What can be concluded about the interface based on output provided?
A. The interface receives timestamps from a master clock, but the router's clock is not yet synchronized to the master.
B. The interface is aware of a better clock than the one it would advertise if it was in Master state.
C. The interface is not yet ready to participate on PTP.
D. The interface is about to go into Master state.
Q119. Refer to the exhibit. How will the redistributed routes on R1 from EIGRP into OSPF be installed in the R4 routing table?
A. as a default route with an E2 route type
B. as a default route with an IA route type
C. as specific routes with an E2 route type
D. as specific routes with an N2 route type
E. as a default route with an N2 route type
Explanation: http://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/6208-nssa.html http://www.cisco.com/image/gif/paws/6208/nssa.pdf
Q120. Refer to the exhibit. An SP core is running MPLS with OSPF as the IGP used for Loopback propagation. LDP Synchronization is enabled per the given configuration. What will the traffic flow behavior be after a temporary outage event on PE1 Eth0/0?
A. Permanently through PE1 -> P2 -> PE4 due to lowest path metric.
B. Initially through PE1 -> P1 -> PE4, then a few seconds later, it will be over PE1 -> P2 -> PE4.
C. Permanently through PE1 -> P1 -> PE4 due to lowest path metric.
D. Initially through PE1 -> P2 -> PE4, then a few seconds later, it will be over PE1 -> P1 -> PE4
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