多項選擇題Which three functions can an Integrated Services Router perform in a VoIP network？（）

A. voice stream mixing for conference calling
B. voice gateway
C. call admission control
D. analog or digital phone interfaces
E. XML application services
F. large scale dial plan application


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1.單項選擇題Which of the items stated is typically the most expensive method of improving QoS across WAN links？（）

A. advanced queuing
B. data compression
C. header compression
D. increasing link capacity

2.單項選擇題When QoS levels in the Cisco Wireless Control System （WCS） are entered， which profile names are used to identify the access categories？（）

A. platinum， gold， silver， and bronze
B. voice， gold， silver， and bronze
C. low delay， network critical， business， best effort
D. voice， video， background gold， background silver， and best effort
E. voice， video， best effort， and background
F. voice， video， best effort， background， and scavenger

3.多項選擇題Which two statements about the Wi-Fi Multimedia （WMM） standard are true？（）

A. Lower-priority traffic is assigned short interframe wait-timers to allow higher-priority traffic access to the wireless network first.
B. Packets that are not assigned to a specific access category are categorized by default as the background access category.
C. The WMM standard was implemented after the 802.11e standard was approved to provide support for non 802.11e devices.
D. WMM is a Wi-Fi Alliance standard that was implemented before the 802.11e standard was approved.
E. WMM uses Enhanced DCF （EDCF） to stipulate fixed and random wait times for the different access classes.

4.單項選擇題Which set of classes correctly identifies the four traffic classes， from highest priority to lowest priority， specified in the 802.11e standard？（）

A. gold， silver， bronze， and platinum
B. platinum， gold， silver， and bronze
C. titanium， gold， silver， and bronze
D. voice and video， best effort， background， and scavenger
E. voice， video， best effort， and background
F. voice， video， best effort， and scavenger

5.單項選擇題Which two commands should be entered on a WLAN controller to remove any residual configuration？（）

A. Enter the clear controller command followed by the reload command.
B. Enter the clear controller command followed by the reset command.
C. Enter the clear controller command followed by the reset system command.
D. Enter the erase startup-config command followed by the reload command.
E. Enter the erase startup-config command followed by the reset command.
F. Enter the erase startup-config command followed by the reset system command.

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Which three user interfaces exist for the Cisco WLAN Controllers？（）

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What are three factors used to determine the amount of bandwidth that is required for a single VoIP call？ （）

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What are the three models of quality of service （QoS） in a network？（）

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When QoS levels in the Cisco Wireless Control System （WCS） are entered， which profile names are used to identify the access categories？（）

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What is the term that is used to describe the process of converting a signal from digital to analog？（）

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Which two statements about the Wi-Fi Multimedia （WMM） standard are true？（）

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When Cisco SDM is used to generate QoS policy， various QoS classes will be created and assigned a percentage of the interface bandwidth. Which three statements indicate the default bandwidth values that are assigned by SDM for outgoing traffic on a WAN interface？ （）

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Which two characteristics are common between traffic policing and traffic shaping？（）

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What can be used to maintain the voice quality on a link by limiting the number of calls that can be active at any given time？（）

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