Designing Cisco Network

Service Architectures

(ARCH) v2.1

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QUESTION NO: 277

In a VoWLAN deployment, what is the recommended separation between cells with the same channel?

A. 19 dBm

B. 67 dBm

C. 10 dBm

D. 86 dBm

E. 5 dbm to 10 dBm

Answer: A

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QUESTION NO: 278

What is the recommended radius of a cell for a voice-ready wireless network?

A. 6 dBm

B. 19 dBm

C. 5 dBm

D. -67 dBm

Answer: D

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Explanation:

At the edge of each voice cell, the received signal strength indication

(RSSI) measurement should be -67 dBm if you are using a Cisco Unified Wireless IP Phone 7921G. It is recommended that you have RSSI above 35 at the edge of the cell, which is equivalent to -67dBm for optimum performance on the phone.

Each cell in the network should overlap with the adjacent cells in order to facilitate uninterrupted handoff as a client moves between cells and to provide a minimum service even in case of access point failure. For a typical voice deployment, Cisco recommends a 15 to 20 percent overlap of a given access point's cell from each of the adjoining cells.

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QUESTION NO: 279

Client traffic is being bridged through LAN interfaces on two WLCs. Which roaming option will keep them on the same IP subnet?

A. Layer 1 intercontroller roaming

B. Layer 2 intercontroller roaming

C. Layer 3 intercontroller roaming

D. intracontroller roaming

Answer: B

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QUESTION NO: 280

During consultation, you find that a customer has multiple asset closets and will be adding more in the future. Which NAS physical deployment model would you suggest to this customer?

A. edge

B. central

C. Layer 2

D. Layer 3

Answer: B

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QUESTION NO: 281

The Cisco NAC Appliance is able to check which three items before allowing network access? (Choose three.)

A. client antivirus software state

B. personal firewall settings

C. wireless cell bandwidth availability

D. IOS versions for routers and switches

E. appropriate client patch management level

F. appropriate QoS settings for client application

Answer: A,B,E

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QUESTION NO: 282

During consultation, you find that a customer has only a single asset closet and is looking for a solution that is easy to deploy. Which NAS physical deployment model would you suggest to this customer?

A. edge

B. central

C. Layer 2

D. Layer 3

Answer: A

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QUESTION NO: 283

Which three routing protocols can minimize the number of routes advertised in the network?

(Choose three)

A. IGRP

B. RIPv2

C. OSPF

D. EIGRP

E. BGP

Answer: B,C,D

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QUESTION NO: 284

You are the Cisco Network Designer in Cisco.com. Your company is using the G.711 codec with 802.11a access point radios. This can support a maximum of how many phones per access point?

A. 5

B. 10

C. 14

D. 20

Answer: C

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Explanation:

In “Designing Cisco Network Service Architectures (ARCH)”, page 512 It says: “In comparison, 802.11a AP radios can support 14 active voice calls using the G.711 codec”.

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QUESTION NO: 285

Which of these recommendations is most appropriate for the Cisco Campus Architecture?

A. Utilize Layer 3 switching. B. Utilize software accelerated services. C. Aggregate end users and support a feature-rich

environment. D. Perform packet manipulation and filtering at the core

layer. E. Use redundant point-to-point Layer 2 interconnections

when there is a link or node failure.

Answer: A

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QUESTION NO: 286

How does ERS use the VLAN tag?

A. to provide service internetworking

B. to support transparency for Layer 2 frames

C. as a connection identifier to indicate destination

D. as a mapping to the DLCI in service internetworking

E. to provide a trunk by which all VLANs can navigate from one site to one or multiple sites

Answer: C

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