CCIE Service Provider Written Exam (V 4.1) v16.0

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Refer to the exhibit. A network engineer from ISP 2 is designing the BGP architecture with
a requirement of preventing their customer AS 65001 from becoming a transit AS, using
the following configuration.
Router BGP 65000
Neighbor 10.0.0.1 remote-as 65001
Neighbor 10.0.0.1 route-map BGP-ROUTE-policy in
Which Cisco IOS command should be used within the route-map to achieve the goal on
ISP 2 from AS 65000?

  • A. route-map BGP-ROUTE-POLICY permit 10 set community no-advertise additive
  • B. ip as-path access-lists 1 permit^65001$ ! route-map BGP-ROUTE-POLICY deny 10 match as-path 1 ! route-map BGP-ROUTE-POLICY permit 10
  • C. ip as-path access-list 1 permit^65001$ ! route-map BGP-ROUTE-POLICY permit 10 match as-path 1
  • D. route-map BGP-ROUTE-POLICY permit 10 set community no-export additive


Answer : C

Which feature allows an MPLS TE tunnel to be used by an IGP at the headend of the
tunnel ?

  • A. MPLS TE Forwarding Adjacency
  • B. Generalized MPLS
  • C. Different Services traffic Engineering
  • D. MPLS TE link management
  • E. MPLS TE autoroute announce


Answer : E

A network engineer configures redistribution of OSPF intra-area routes into MP-BGP
(super backbone) to preserve the continuity of the OSPF design in an MPLS Layer 3 VPN
scenario From the CE perspective, what is the effect?

  • A. All intra-area routes are converted to external routes
  • B. All interarea routes are lost
  • C. All intra-area routes are converted to interarea routes
  • D. AU intra-area routes are lost


Answer : C

Which protocol functions as the transfer protocol between the Cisco Open SDN Controller
and forwarding devices?

  • A. OSPF or IS-IS
  • B. BGP-LS
  • C. OpenFlow
  • D. PCEP


Answer : C

An operator enabled BFD in echo mode and now CPU is high. Which option is the most
likely solution to the problem?

  • A. Disable ICMP redirects on an interface
  • B. Change from echo mode to asynchronous mode
  • C. Disable BFD altogether
  • D. Reduce the BFD packet rate
  • E. Reduce the BFD control plane packet rate


Answer : A

Which Cisco IOS XR security component can protect the route processor of the
Cisco CRS router?

  • A. Receive ACL
  • B. Interface ACL
  • C. Local Packet Transport Services
  • D. Control Plane Policing


Answer : C

Drag and drop the 802.1ad characteristics on the left onto the port type on the right.
Not all
options are used




Answer :

Explanation: C-UNI Access or trunk port Support customer-tag vlan BPDU S-UNI Access port only Filtering of BPDUs S-NNI Trunk port only Support S-Vlan BPDU, however only encapsulation default is supported

Which two steps take place in the BGP Link State architecture ? (Choose two)

  • A. IGP is redistributed into BGP-LS
  • B. Advertise the BGP-LS NLRIs to the topology server
  • C. IGP uses BGP LS data from remote peers
  • D. Enable access to the Adj-RIB-In (BGP raw format )of a peer border router or provider edge router
  • E. BGP downloads the received BGP LS data to the IGP component on the router


Answer : B,C

Which protocol in the IPv6 stack does the MLD protocol use to carry its messages?

  • A. NDP
  • B. IGMPv6
  • C. DHCPv6
  • D. IGMP
  • E. ICMPv6


Answer : E

ISP A provides L2VPN services to Company B through an MPLS network. Company B
uses all available CoS values to classify and different traffic forwarding within all Company
B sites. ISP A uses the following CoS values to differentiate service classes for the VPN
customer traffic
*MPLS EXP 0 for Bronze service class
*MPLS EXP 1 for Silver service class
*MPLS EXP 2 for Gold service class
*Remaining MPLS EXP values for ISP A internal use
ISP As policy is to forward VPN customer traffic based only on their Bronze, silver and
Gold service classes. Which QoS method must ISP A implement to achieve this?

  • A. Short-pipe Mode
  • B. Russian Doll Model
  • C. Pipe Mode
  • D. Uniform Mode
  • E. Maximum Allocation Model


Answer : D


Refer to the exhibit. A service provider engineer has a requirement to configure an Inter-AS
L3VPN with a maximum of one LSP between PE-1 and PE-2. Which two configurations are
required to accomplish this goal? (Choose two)

  • A. next-hop-self on ASBR's
  • B. redistribute bgp on ASBR's
  • C. nest-hop-self on RR's
  • D. next-hop-unchanged on RR's
  • E. ip route on ASBR's
  • F. redistribute connected on ASBR's
  • G. next-hop-unchanged on ASBR's


Answer : B,D

Which description is true of what the fast-reroute keep-all-paths command accomplishes
when under OSPF process?

  • A. Besides the regular LFA backup paths, this command also installs the remote LFA backup paths
  • B. By default, only the/32 routes have a backup path installed. This command creates a backup path for the router with any subnet mask
  • C. All backup routes-not only the best backup route-are installed in the OSPF RIB
  • D. All possible alternate routes are installed in the OSPF RIB, even if the alternate paths do not meet LFA criteria (the LFA inequalities)


Answer : C

A service provider is implementing an nV Edge system with the two ASR 9000 chassis has
two RSPs. Which two cabling methods reflect the minimum configuration needed for full
synchronization between the two Cisco ASR 9000 chassis? (Choose two)

  • A. Create the single virtual control plane that connect the two RSPs between the two chassis via Layer 2 connections
  • B. Create the IRL connections between the two chassis via Layer 3 connections using the EOBC 10 Gbps ports of the RSPs
  • C. Create the IRL connections between the two chassis via Layer 3 connections using the ports of the line cards
  • D. Create the single virtual control plane that connect the two chassis via Layer 3 connections using the 10 Gbps ports of the line cards
  • E. Create the IRL connections between the two chassis via Layer 1 connections using the10 Gbps ports of the line cards
  • F. Create the single virtual control plane that connect the two chassis via 100 Gbps bundle interfaces
  • G. Create the IRL connections between the two chassis via Layer 1 connections using the EOBC 10 Gbps ports of the RSPs


Answer : A,E


Refer to the exhibit. An MPLS VPN service was provisioned for customer ABC both
sites must be communication to each other primarily over the wan link with no traffic
over the wan circuits PE1 has the same configuration as PE2 which two commands
can be configure on the PEs to accomplish the desired goal?(Choose two)

  • A. Under sub interface IP VRF SITEMAP SoO with the same SoO value.
  • B. no neighbor <CE-IP address> AS-override.
  • C. Neighbor<CE-IP address> route-map SoO in with the same SoO value.
  • D. Neighbor<CE-IP address> route-map SoO in with a different SoO value.
  • E. Neighbor<CE-IP address> route-map SoOout with the same SoO value.


Answer : B,C

Which technology is a forwarding decision point in a PE router that provides flexibility to
make many Layer 2 flow decisions within an interface?

  • A. pseudowire
  • B. AToM
  • C. VPLS
  • D. local connect
  • E. EFP


Answer : E

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