Cisco 642-874 : Designing Cisco Network Service Architectures

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Cisco Designing Cisco Network Service Architectures Sample Questions:

1. Which unique characteristics of the Data Center Aggregation layer must be considered by an Enterprise Campus designer?

A) Virtualization tools allow a cost effective approach for redundancy in the network design by using two or four VDCs from the same physical switch.
B) Layer 3 routing between the Access and Aggregation layers facilitates the ability to span VLANs across multiple access switches, which is a requirement for many server virtualization and clustering technologies.
C) "East-west" server-to-server traffic can travel between aggregation modules by way of the core, but backup and replication traffic typically remains within an aggregation module.
D) Load balancing, firewall services, and other network services are commonly integrated by the use of service modules that are inserted in the aggregation switches.

2. What Nexus technology avoids blocking links between the access layer and the aggregation layer in a data center network design?

A) FCoE
B) vPC
C) FEX
D) LACP

3. AutoQoS is used to implement VoIP in the enterprise, but the trust option is not configured on the interface. Which network management Cisco IOS capability classifies the voice traffic?

A) NBAR
B) SNMP
C) IP SLAs
D) NetFlow

4. Two companies recently merged and want to integrate their networks. Both utilize EIGRP to support their complex enterprise networks. Which action can improve the performance of these two separate EIGRP domains?

A) Utilize EIGRP stub routing between the network boundaries of the companies.
B) Remove EIGRP and utilize OSPF instead.
C) Adjust the administrative distance to prefer the best routes to each destination.
D) Enable route summarization at redistribution points.

5. Which network virtualization technology provides logical isolation of network traffic at Layer 3?

A) VSS
B) VRF-Lite
C) MEC
D) VLAN

Solutions: