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Exam : Cisco 642-873
Title : Designing Cisco Network Service Architectures Exam


1. Jitter is an unwanted variation of one or more characteristics of a periodic signal in electronics and telecommunications and _____refers to call issues that cause variations in timing or time of arrival
A. echo
B. jitter
C. packet loss
D. digitized sampling
Answer: B

2. Which three best practices should be implemented at the campus backbone submodule to support the server farm module? (Choose three.)
A. Implement highly redundant switching and links with no single points or paths of failure.
B. Implement server load balancing.
C. Implement the Hot Standby Router Protocol (HSRP) for failover protection.
D. Implement intrusion detection with automatic notification of intrusion attempts in place.
Answer: ACD

3. What two choices can you make when redundancy is required from a branch office to a regional office? (Choose two.)
A. multiple Frame Relay PVCs
B. dual Wan links to the regional office
C. dual Wan links to another branch office
D. single links - one to the regional office and one to another branch office
Answer: BD

4. Which one is not the feature of the Cisco Unified Wireless Network architecture?
A. network unification
B. remote access
C. mobility services
D. network management
Answer: B

5. Which VPN management feature would be considered to ensure that the network had the least disruption of service when making topology changes?
A. dynamic reconfiguration
B. path MTU discovery
C. auto setup
D. remote management
Answer: A

6. The network administrator would like to generate synthetic traffic using the Service Assurance Agent contained in Cisco IOS. Which CiscoWorks network management application will be used to report the latency and availability for configured traffic operations on an end-to-end and hop-by-hop (router-to-router) basis?
A. nGenius Real-Time Monitor
B. CiscoView
C. Device Fault Manager
D. Internetwork Performance Monitor
Answer: D

7. What type of Call Admission control in CallManager allows for limits to the bandwidth consumed by active calls?
A. regions
B. partitions
C. locations
D. device Pools
Answer: C

8. Cisco IDS sensors form the eyes and ears of your Cisco network intrusion detection system. Placing sensors correctly throughout your network is crucial to successfully implementing your Cisco intrusion detection system .Which two of these are characteristics of an IDS sensor? (Choose two.)
A. has a permissive interface that is used to monitor networks
B. is an active device in the traffic path
C. passively listens to network traffic
D. has a promiscuous interface that is used to monitor the network
Answer: CD

9. Which typical enterprise campus requirement ensures that the network supports the required applications and that data flows within the required time frames?
A. availability
B. performance
C. functionality
D. manageability
Answer: C

10. Which three components are part of the Intelligent Network Services provided by the Cisco AVVID framework? (Choose three.)
A. IP telephony
B. security
C. IP multicasting
D. QoS
Answer: BCD

11. You are the network consultant from Cisco.com. Please point out which Layer 2 access designs does not support VLAN extensions?
A. FlexLinks
B. loop-free U
C. looped square
D. looped triangle
Answer: B

12. Which two of these are correct regarding the recommended practice for distribution layer design based on the following configuration?
A. use a Layer 2 link between distribution switches
B. use a Layer 3 link between distribution switches
C. use a redundant link to the core
D. use a Layer 3 link between distribution switches with route summarization
Answer: CD

13. In base e-Commerce module designs, where should firewall perimeters be placed?
A. core layer
B. Internet boundary
C. aggregation layer
D. aggregation and core layers
E. access and aggregation layers
Answer: A

14. You are the Cisco Network Designer in Cisco.com. Which of these is a Layer 2 transport architecture that provides packet-based transmission optimized for data based on a dual ring topology?
A. Dynamic Trunking Protocol
B. Resilient Packet Ring
C. Synchronous Digital Hierarchy
D. Coarse Wave Division Multiplexing
Answer: B