单选题How can Cisco NetFlow be used to aid in the operation and troubleshooting of QoS issues? （）A NetFlow can report on the number of traffic matches for each class map in a configured QoS policy configuration.B NetFlow records can be used to understand tra

第1题：

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？（）

• A、 Call Management Link Agent
• B、 Traffic policing
• C、 Call Admission Control
• D、 QoS Link Congestion Management
• E、 Oversubscription Link Detection

第2题：

Which three statements about NetFlow are true？（）

• A、NetFlow records unidirectional IP traffic flow.
• B、NetFlow records MPLS frame flow.
• C、NetFlow expert is only over TCP.
• D、NetFlow records is only over UDP.
• E、NetFlow records subinterface information of traffic flow.

第3题：

第4题：

Which statement is true about the SDM QoS wizard and its ability to enable a QoS policy on router interfaces？（）

• A、QoS can be enabled on interfaces used for Easy VPN clients
• B、QoS can be enabled on IPsec VPN interfaces and tunnels
• C、QoS can be enabled on interfaces with an existing QoS policy
• D、the QoS policy can be enabled for incoming and outgoing traffic on the interface

第5题：

Cisco IOS NetFlow gathers data that can be used in which three of these？ （）

• A、 accounting
• B、 authentication
• C、 authorization
• D、 network monitoring
• E、 network planning

第6题：

Which two QoS statements are true about the use of the SDM QoS wizard？（）

• A、Business-critical traffic includes VoIP and voice signaling packets.
• B、SDM can be used to configure a basic QoS policy for incoming traffic on WAN interfaces and IPsec tunnels.
• C、SDM can provide QoS for real-time traffic and business-critical traffic.
• D、SDM creates a custom-queuing （CQ） or a priority-queuing （PQ） policy.
• E、SDM creates a low latency queuing （LLQ） service policy with its associated classes.
• F、When allocating bandwidth， values can be entered in either bandwidth percentage or kilobytes per second （kBps）.

第7题：

Which descriptions of Netflow is correct？（）

• A、By default，Netflow records bidirectional IP traffic flow.
• B、Netflow answers questions regarding IP traffic：who，what，where，when，and how
• C、Netflow accounts for both transit traffic and traffic destined for the router.
• D、Netflow returns the subinterface information in the flow records.

第8题：

Which two statements about voice VLANs are correct？（）

• A、Voice VLANs eliminate the need for QoS configuration
• B、Voice VLANs are used on trunk links to eliminate the need for QoS CoS markings
• C、Voice VLANs are mainly used to reduce the number of access switch ports that are used in the network
• D、Voice VLANs can be configured to forward existing CoS priorities or override them
• E、Voice VLANs are mainly used between access layer switches and distribution layer switches
• F、Voice VLANs can be configured on Layer 2 ports only

第9题：

What method in a Cisco IOS router can confirm that packets marked for a particular QoS marking are being matched?（）

• A、Issue a show policy-map interface command. 
• B、Assuming Netflow is enabled, issue a show ip cache verbose flow command.
• C、Issue a show crypto ipsec session command.
• D、Issue a debug qos set command and a terminal monitor command.

第10题：

Which two statements are true about the various methods of implementing QoS？（）

• A、Cisco AutoQoS can be used repeatedly to apply a single QoS policy to multiple interfaces.
• B、Cisco AutoQoS includes an optional web-based GUI for automating the configuration of QoS services.
• C、Cisco AutoQoS provides capabilities to automate VoIP deployments.
• D、The auto qos global configuration command is used to configure Cisco AutoQoS.
• E、The Modular QoS CLI （MQC） is the best way to fine tune QoS configurations.
• F、The SDM QoS wizard is the fastest way to implement QoS.