Which feature must be part of the network design to wait a predetermined amount of time before notifying the routing protocol of a change in the path in the network?
A. Transmit delay
B. Throttle timer
C. SPF hold time
D. Interface dampening
Which three items do you recommend for control plane hardening of an infrastructure device? (Choose three)
A. To enable unused services
B. Warning banners
C. Routing protocol authentication
D. Control Plane Policing
E. Redundant AAA servers
F. SNMPv3
What is an effect of using ingress filtering to prevent spoofed addresses on a network design?
A. It reduces the effect of DDoS attacks when associated with DSCP remaking to Scavenger
B. It protects the network infrastructure against spoofed DDoS attacks
C. It filters RFC 1918 addresses
D. It classifies bogon traffic and remarks it with DSCP bulk
VPLS is implemented in a Layer 2 network with 2000 VLANs.
Which must be the primary concern to ensure successful deployment of VPLS?
A. The underlying transport mechanism
B. PE scalability
C. Flooding is necessary to propagate MAC address reachability information
D. VLAN scalability
Which two control plane policer design options should you consider to achieve high availability? (Choose two)
A. Control plane policers require that adequate protocols overhead are factored in to allow protocol convergence
B. Control plane policers are really needed only on externally facing devices
C. Control plane policers can cause the network management systems to create false alarms
D. Control plane policers are enforced in hardware to protect the software path, but they are hardware platform-dependent in terms of classification ability
E. Control plane policers must be processes before a forwarding decision is made
Which two statements regarding to QoS marking are true? (Choose two)
A. Shaping is one of the ways that packets can be remarked
B. Class-based marking occurs after packet classification
C. 802.1Q/p CoS bits and IP Precedence are both layer 3 marking fields
D. QoS marking establishes a trust boundary that scheduling tools depend on
E. MPLS EXP and DSCP are both layer 2 marking fields
What is an implication of using route reflectors in an iBGP topology?
A. Route reflection limits the total number of iBGP routers.
B. Route reflection causes traffic to flow in a hub-and-spoke fashion.
C. The manipulation of BGP attributes is not supported on the other routers than the route reflectors.
D. Route reflectors can create routing loops when more than one router reflector is used in the same cluster.
E. Multipath information is difficult to propagate in a route reflector topology.
A network engineering team is in the process of designing a lab network for a customer demonstration. The design engineer wants to show that the resiliency of the MPLS traffic Engineering Fast Reroute solution has the same failover/ failback times as a traditional SONET/SDH network (around 50MSEC). In order to address both link failure and node failure within the lab typology network, which type of the MPLS TE tunnels must be considered for this demonstration?
A. TE backup tunnel
B. Next-hop (NHop) tunnel
C. FRR Backup tunnel
D. next-next-hop (NNHop) tunnel
Which two conditions are required for successful route aggregation? (Choose two)
A. Contiguous prefix allocation
B. Logical separation between zones or layers within networks
C. Matching traffic aggregation with route aggregation locations
D. Consistent prefix allocations per network
E. Physical separation between zones or layers within networks
Company ABC grew organically and now their single-area OSPF network has an unacceptably slow convergence time after a topology change. To address the slow convergence time, they want to introduce a multiarea OSPF design and implement address summarization at the area border routers, which option should be their main concern about this redesign?
A. Routing is suboptimal
B. SPF calculation takes longer
C. Operations complexity is increased
D. More memory is needed across the routers on the network
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