You are tasked to design a QoS policy for a service provider so they can include it in the design oftheir MPLS
core network. If the design must support an MPLS network with six classes, and CEs will be managed by the
service provider, which QoS policy should be recommended?
A. map DSCP bits into the Exp field
B. map IP precedence bits into the DSCP field
C. map flow-label bits into the Exp field
D. map IP CoS bits into the IP Precedence field
E. map IP ToS bits into the Exp field

How should multiple OSPF areas be designed when deployed on a classic three-layer (core/distribution/
access) network hierarchy?
A. The OSPF flooding domain boundary should be at the edge of the core layer.
B. The OSPF flooding domain boundary should be within the distribution layer.
C. OSPF should generally be deployed in a three-layer domain hierarchy to align with the physical three-layer
hierarchy.
D. OSPF flooding domain boundaries should be placed with route aggregation in mind.

You are designing a network that includes IP QoS. Which two architectures could be used to ensure that IP
QoS is implemented properly? (Choose two.)
A. Differentiated Services, where the user, with the assistance of the RSVP signaling protocol, reserves the
resources end to end before sending the data
B. Integrated Services, where the user, with the assistance of the RSVP signaling protocol, reserves the
resources end to end before sending the data
C. Integrated Services, which relies on the information carried within each packet.

resource-allocation decisions at each network node
D. Differentiated Services, which relies on the information carried within each packet to make resource-allocation decisions at each network node
E. Integrated Services, where the user, with the assistance of the DSCP signaling protocol, reserves the
resources end to end before sending the data

Refer to the exhibit.
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What limitations exist in this design, given that the access layer devices are expected to steadily increase by
two devices per week for the next year?
A. scalability
B. serviceability
C. redundancy
D. resiliency

Your customer asks you to assist with their traffic policy design. They want to guarantee a minimum amount of
bandwidth to certain traffic classes. Which technique would you advise them to implement?
A. Modular QoS CLI
B. committed accessrRate
C. policy-based routing
D. traffic shaping

What is a key role for the access layer in a hierarchical network design?
A. The access layer provides a security, QoS, and policy trust boundary.
B. The access layer provides an aggregation point for services and applications.
C. The access layer serves as a distribution point for services and applications.
D. The access layer can be used to aggregate remote users.

What is a key design aspect to be considered when designing an IP network that will be carrying real-time
VoIP traffic?
A. Minimizing total bidirectional end-to-end delay to 0-150 ms
B. Minimizing total unidirectional end-to-end delay to 150-500 ms
C. Minimizing total bidirectional end-to-end delay to 0-50 ms
D. Minimizing total unidirectional end-to-end delay to 0-150 ms

In a redesign of a multiple-area network, it is recommended that summarization is to be implemented.For
redundancy requirements, summarization is done at multiple locations for each summary. Some customers
now complain of higher latency and performance issues for a server hosted in the summarized area. What
design issues should be considered when creating the summarization?
A. Summarization adds CPU overhead on the routers sourcing the summarized advertisement.
B. Summarization prevents the visibility of the metric to the component subnets.
C. Summarization creates routing loops.
D. Summarization causes packet loss when RPF is enabled.

When designing a WAN that will be carrying real-time traffic, what are two important reasons to
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consider serialization delay? (Choose two.)
A. Serialization delays are variable because they depend on the line rate of the interface and on the type of
the packet being serialized.
B. Serialization delay depends not only on the line rate of the interface but also on the size of the packet.
C. Serialization delays are invariable because they depend only on the line rate of the interface.
D. Serialization delays are variable because they depend only on the size of the packet being serialized.
E. Serialization delay is the time required to transmit the packet on the physical media.

Which two techniques are used in a network design to slow down the distribution of topology information
caused by a rapidly flapping link? (Choose two.)
A. Bidirectional Forwarding Detection
B. IP event dampening
C. link-state incremental SPF
D. link-state partial SPF
E. LSA throttling
F. SPF throttling