Cisco Designing Cisco Network Service Architectures (ARCH) v2.1 Set 2

1.

When considering the design of the E-Commerce topology which of the following are true?

One-armed SLB design with multiple security contexts removes the need for a separate firewall in the core layer Two-firewall-layer SLB design considers the aggregation and access layers to be trusted zones,requiring no security between the web, application, and database zones One-armed SLB design with two firewall layers ensures that non load-balanced traffic still traverses theACE so that the health and performance of the servers is still being monitored In all cases there will be configuration requirements for direct access to any servers or for nonload-balanced sessions initiated by the servers

2.

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?

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

3.

Which four Cisco proprietary Spanning Tree Protocol enhancements are supported with rapid per- VLAN Spanning-Tree plus? (Choose four.)

PortFast UplinkFast loop guard root guard BPDU guard

4.

Which two of these are correct regarding the recommended practice for distribution layer design? (Choose two.)

use a redundant link to the core use a Layer 2 link between distribution switches never use a redundant link to the core because of convergence issues use a Layer 3 link between distribution switches with route summarization use a Layer 3 link between distribution switches without route summarization

5.

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

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

6.

Which part of the Layer 3 header is used to identify a flow in NetFlow but it is not used for NBAR?

source port ToS protocol type source IP

7.

Which option is a common cause of congestion found in a campus network?

input serialization delay output serialization delay Rx-queue starvation Tx-queue starvation

8.

Which VRF component ensures control plane separation between the different Layer 3 VPNs?

FIB routing protocol instance RIB a subset of the router interfaces

9.

Which option is the Cisco recommendation for data oversubscription for access ports on the access-to-distribution uplink?

4 to 1 20 to 1 16 to 1 10 to 1

10.

Which option describes why duplicate IP addresses reside on the same network in Cisco network design?

HSRP designed network using Cisco ACE in active/passive mode VRRP designed network running multiple routing protocols

Cisco Designing Cisco Network Service Architectures (ARCH) v2.1 Set 2

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Cisco Designing Cisco Network Service Architectures (ARCH) v2.1 Set 2

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