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

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

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

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.

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

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.

A. Home， Configure， Location， and Monitor
B. Home， Configure， Monitor， and Refresh
C. Home， Monitor， Refresh， and Administration
D. Monitor， Configure， Location， and Administration
E. Monitor， Configure， Refresh， and Administration
F. Monitor， Location， Refresh， and Administration

A. Traffic to be policed is identified using the control-plane global configuration command.
B. The control-plane global configuration command enters the Cisco Modular QoS CLI （MQC） mode.
C. The control-plane global configuration command enters the control-plane configuration mode. 
D. Traffic to be policed is identified using the control-plane interface configuration command.
E. The control-plane interface configuration command enters the Cisco Modular QoS CLI （MQC） mode.
F. The control-plane interface configuration command enters the control-plane configuration mode.

A. Type 1
B. Type 2
C. FXS
D. FXO
E. E&M

A. On congested links， all forms of traffic will require some form of QoS.
B. All traffic types and requirements should be examined to determine the number of traffic classes required.
C. In the implementation of link efficiency mechanisms on links that typically transport relatively large packets， header compression will be most efficient.
D. In the implementation of link efficiency mechanisms on links that typically transport relatively small packets， header compression will be most efficient.
E. In the implementation of link efficiency mechanisms on links that typically transport relatively small packets， payload compression will be most efficient.
F. Payload compression provides more available bandwidth and reduces processing delay time.

A. Because services are allocated throughout the network before the transmission of data begins， traffic classes can be guaranteed QoS services.
B. Traffic classes are marked with Layer 2 markings to allow for more granularity in identifying traffic classes.
C. Traffic classes are marked with Layer 3 markings to allow them to traverse different network types without loss of QoS information.
D. Traffic classes allow networks to provide proper QoS treatment of packets without applications having to request services.
E. Based upon the network capabilities， QoS markings are placed on packets as needed throughout the network to allow for proper QoS treatment of packets.
F. QoS markings are placed on packets as close to the network edge as possible to allow distribution and core devices to determine QoS actions as quickly as possible.