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Cisco 642-871 Exam Syllabus Topics:

Cisco Designing Cisco network Service Architectures (ARCH) Sample Questions:

1. When dealing with transparent caching, where should the Content Engines be placed?

A) close to the end users
B) at the Internet edge
C) in front of web server farms
D) close to the servers

2. Which routing protocol best fits these requirements? - Supported by multiple router vendors
- Requires minimum router CPU and memory resources - Uses a simple routing metric - Supports manual or automatic route summarization

A) OSPF
B) RIPv2
C) BGP
D) IGRP
E) EIGRP
F) IS-IS

3. What are three benefits to tuning BGP parameters? (Choose three.)

A) In order to avoid routing loops, all BGP routers in the same AS must ultimately make the best routing decision for their own directly connected network.
B) It helps reduce the amount of traffic an ISP has to pay for on its own network.
C) Hot-potato routing directs traffic to the closest ingress point of the network. Traffic remains on the router for a shorter period of time. This is true even when an even more optimal path exists.
D) Policy routing is often used to balance traffic across multiple links.
E) Cold-potato routing keeps traffic on the network of an ISP as short a time as possible, delivering the traffic to the ingress point as close to the target as possible.
F) When there are two alternate paths to the same target network and they have the same relative performance, you can direct traffic to the least expensive path.

4. When designing the WAN module within the enterprise edge, which document is used to specify the connectivity and performance agreements with the service provider?

A) SLC/SLA
B) RFC
C) SOW
D) RFP

5. What is one of the reasons that custom QoS ACLs are recommended over automatic QoS when configuring ports on a Catalyst 6500 for use with IP phones?

A) 79xx IP phones do not automatically mark voice packets with non-zero DSCP values.
B) 79xx IP phones use a custom protocol to communicate CDP information to the switch.
C) 79xx IP phones do not mark voice packets with optimal DSCP values.
D) 79xx IP phones do not mark protocol packets such as DHCP, DNS, or TFTP with non- zero DSCP values.

Solutions: