2.2 Data, Control, and Management Plane Technologies 400-007 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   Which management plane technology is used to monitor network device health and performance by collecting metrics such as CPU utilization and interface traffic statistics?

   • AVLAN (Virtual Local Area Network)
   • BSNMP (Simple Network Management Protocol)
   • COSPF (Open Shortest Path First)
   • DMPLS (Multiprotocol Label Switching)
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   A large enterprise is deploying a new WAN aggregation router. The router will connect to multiple ISP links and must perform traffic shaping and policing to ensure that traffic conforms to the purchased bandwidth. The network team is configuring QoS policies. Which QoS mechanism should be used to drop traffic that exceeds the committed information rate (CIR) on the ingress interface?

   • AUse generic traffic shaping (GTS) to buffer excess traffic and transmit it later.
   • BUse committed access rate (CAR) to police traffic and drop packets that exceed the CIR.
   • CUse class-based weighted fair queueing (CBWFQ) to drop excess traffic.
   • DUse low latency queuing (LLQ) to provide a strict priority queue for traffic that exceeds the CIR.
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A service provider is deploying a new MPLS backbone to carry voice, video, and data traffic for enterprise customers. The design must ensure that voice and video traffic are prioritized over data traffic during periods of congestion. The network team is considering implementing QoS mechanisms on the PE routers. Which QoS mechanism should be the primary tool for classifying and marking traffic at the ingress of the service provider network?

   • AUse class maps and policy maps to match traffic based on DSCP or IP precedence values and set the appropriate MPLS EXP bits on the ingress PE.
   • BUse class-based weighted fair queueing (CBWFQ) on the egress interfaces of the PE routers to prioritize voice and video queues.
   • CUse low latency queuing (LLQ) on the egress interfaces to provide a strict priority queue for voice and video traffic.
   • DUse committed access rate (CAR) on the ingress interfaces to rate-limit data traffic and ensure voice and video are not dropped.
   Reveal Solution Discussion Select an answer first
5. 4application · medium

   A service provider is designing a new MPLS backbone. The design must support the transport of IPv4 and IPv6 traffic over the same MPLS core. The network team is evaluating the use of separate LDP sessions for IPv4 and IPv6 versus using a single LDP session with dual-stack capability. The primary concern is the scalability of the control plane and the operational simplicity of the design. Which approach is most appropriate?

   • AUse a single dual-stack LDP session, because it reduces the number of control-plane sessions and simplifies the configuration.
   • BUse separate LDP sessions for IPv4 and IPv6, because it provides clear separation and simplifies troubleshooting.
   • CUse BGP to carry MPLS labels for both IPv4 and IPv6, because it is the only way to support dual-stack in an MPLS core.
   • DUse Segment Routing (SR) with a single IGP instance for both IPv4 and IPv6, because it is the only scalable way to support dual-stack.
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   Which management plane technology is used to automate the deployment and configuration of network devices by using a structured, machine-readable format such as YANG?

   • ABGP (Border Gateway Protocol)
   • BIPsec (Internet Protocol Security)
   • CNETCONF (Network Configuration Protocol)
   • DSTP (Spanning Tree Protocol)
   Reveal Solution Discussion Select an answer first