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Cisco Designing Cisco Network Service Architectures Sample Questions:

1. Which of these Layer 2 access designs does not support VLAN extensions?

A) looped square
B) loop-free inverted U
C) loop-free U
D) FlexLinks
E) looped triangle

2. The requirement for high availability within the Data Center network may cause the designer to consider which one of the following solutions?

A) Implement network services for the Data Center as a separate services layer using an active/active model that is more predictable in failure conditions
B) Define the Data Center as an OSPF NSSA area, advertising a default route into the DC and summarizing the routes out of the NSSA to the Campus Core
C) Construct a hierarchical network design using EtherChannel between a server and two VDCs from the same physical switch
D) Utilize Cisco NSF with SSO to provide intrachassis SSO at Layers 2 to 4

3. When designing the routing for an Enterprise Campus network it is important to keep which of the following route filtering aspects in mind?

A) The primary limitation of router filtering is that it can only be applied on outbound updates
B) IGPs (for example EIGRP or OSPF) are superior to route filtering in avoiding inappropriate transit traffic through remote nodes or inaccurate or inappropriate routing updates
C) It is best to filter (allow) the default and summary prefixes only in the Enterprise Edge to remote sites or site-to-site IPsec VPN networks
D) Filtering is only useful when combined with route summarization

4. Which option describes the effect of using softphones instead of VoIP handsets on QoS implementation for the voice traffic?

A) The voice traffic of softphones is mixed with data traffic of PC on the access VLAN.
B) By using softphones, the implementation of a QoS depends only on trusting DSCP markings set by the PC.
C) It provides a Layer 2 CoS marking in the frames that can be used for QoS implementation.
D) Using softphones means that 802.1Q tagging must be configured between the PC and the switch.

5. Distinct, physical redundancy within a network layer is a key characteristic that contributes to the high availability of the hierarchical network design. Which of the following is not an examples of this model?

A) SAN extension with dual fabrics such as a yellow VSAN and a blue VSAN utilized via multipath software
B) A single SAN fabric with redundant uplinks and switches
C) Redundant power supplies and hot-swappable fan trays in Aggregate switches
D) Servers using network adapter teaming software connected to dual-attached access switches

Solutions: