Cisco 642-887 Valid Dump : Implementing Cisco Service Provider Next-Generation Core Network Services

642-887 real exams

Exam Code: 642-887

Exam Name: Implementing Cisco Service Provider Next-Generation Core Network Services

Updated: Jul 15, 2026

Q & A: 231 Questions and Answers

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Reference: http://www.cisco.com/c/en/us/training-events/training-certifications/exams/current-list/642-887-spcore.html

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QOS in a Service Provider IP NGN Environment 38% MPLS/LDP in a Service Provider IP NGN Environment 32% MPLS/LDP in a Service Provider IP NGN Environment 22% Transport Technologies 8%

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Cisco 642-887 Exam Syllabus Topics:

SectionWeightObjectives
MPLS Traffic Engineering (MPLS-TE)22%- MPLS-TE concepts and components
  • 1. Bandwidth reservation
    • 2. RSVP-TE signaling
      • 3. TE tunnels and path calculation
        - Protection and optimization
        • 1. TE path selection and tuning
          • 2. Link and node protection
            MPLS and LDP in Service Provider Networks32%- MPLS implementation and verification
            • 1. LDP authentication and protection
              • 2. MPLS on core and edge routers
                - MPLS architecture and operations
                • 1. Label distribution and convergence
                  • 2. Label stack and forwarding
                    • 3. LDP protocol and session establishment
                      QoS in a Service Provider IP NGN Environment38%- QoS models and mechanisms
                      • 1. Trust boundaries and MQC
                        • 2. Classification, marking, policing, shaping
                          • 3. DiffServ and IntServ models
                            - Implementation on IOS-XR and IOS-XE
                            • 1. QPPB and CB-WFQ
                              • 2. Hierarchical QoS
                                • 3. QoS pre-classify
                                  Transport Technologies8%- Optical transport and IPoDWDM
                                  • 1. Transition from legacy transport
                                    • 2. IPoDWDM configuration on IOS-XR
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