单选题You are experiencing contention in the queue on an egress interface of the router. Which policy action should be used for congestion control?（）A markB colorC filterD discard

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第2题：

You are working with a client to deploy QoS on their Frame Relay WAN. They would like to be able to allow packets to cross the Frame Relay WAN but have them marked as discard eligible if they exceed the QoS policy. How would you accomplish this task?（）

• A、Configure a class map that sets the DE bit so that the policy map can correctly apply a violate-action if the policy is exceeded.
• B、Configure a service policy that sets the DE bit and apply it to the serial interface connected to the Frame Relay WAN.
• C、Configure a policy map that has a burst-max action of setting the DE bit if the policy is exceeded.
• D、Configure a policy map that has a violate-action to change the DE bit from 0 to 1.

第3题：

Which statement is true about the components of a queuing mechanism？（）

• A、Each subinterface has its own hardware queue and can experience congestion just like its main interface
• B、Hardware queuing is only used if the software queues are experiencing congestion.
• C、Hardware queues and software queues are not used concurrently.
• D、The hardware queuing system always uses the FIFO queuing mechanism.

第4题：

You are experiencing contention in the queue on an egress interface of the router. Which policy action should be used for congestion control?（）

• A、mark
• B、color
• C、filter
• D、discard

第5题：

Voice quality is bad due to high delay and jitter on a link. Which two actions will improve the quality  of voice calls？（）

• A、Increase the queue size of the voice class.
• B、Guarantee bandwidth during congestion to the voice class with a bandwidth command.
• C、Increase the tx-ring of the egress interface.
• D、Implement LLQ for the voice class.
• E、Decrease the rx-ring of the egress interface.
• F、Decrease the queue size of the voice class.

第6题：

Which statement is true about source NAT？（）

• A、Source NAT works only with source pools.
• B、Destination NAT is required to translate the reply traffic.
• C、Source NAT does not require a security policy to function.
• D、The egress interface IP address can be used for source NAT

第7题：

Which action statement in a policy list causes a packet to be placed in an outgoing port queue without performing an IP route lookup?（）

• A、filter
• B、forward
• C、next-hop
• D、next-interface

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第14题：

Which three are the ATM cell header fields？（）

• A、cell loss priority （CLP）
• B、discard eligibility （DE）
• C、head error control （HEC）
• D、generic flow control （GFC）
• E、forward explicit congestion notification （FECN）

第15题：

On the Cisco Nexus 7000 Series Switch， Control Plane Policing is enforced on which component？（）

• A、 The supervisor module enforces CoPP before out-of-policy traffic reaches the CPU
• B、 The fabric modules enforce CoPP in the fabric before out-of-policy traffic reaches the CPU 
• C、 The linecards enforce CoPP locally before out-of-policy traffic reaches the CPU
• D、 The egress virtual output queue enforces CoPP locally before out-of-policy traffic reaches the CPU

第16题：

You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. You create a custom-templated server control.  You need to ensure that the child controls of the server control are uniquely identified within the control hierarchy of the page.  Which interface should you implement？（）

• A、the ITemplatable interface 
• B、the INamingContainer interface 
• C、the IRequiresSessionState interface
• D、the IPostBackDataHandler interface

第17题：

You have a firewall filter applied in an inbound direction on a customer interface. You would like this filter to protect your network from a spoofed denial of service attack. Which action should be configured to accomplish your goal?（）

• A、then reject
• B、then discard
• C、then next filter
• D、then silent-drop

第18题：

The policy action of color is used for congestion control under which circumstance?（）

• A、congestion in an upstream router
• B、congestion in a downstream router
• C、contention for queue space on an egress interface
• D、contention for queue space on an ingress interface

第19题：

You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  You create a custom-templated server control.  You need to ensure that the child controls of the server control are uniquely identified within the control hierarchy of the page.  Which interface should you implement？（）

• A、the ITemplatable interface
• B、the INamingContainer interface
• C、the IRequiresSessionState interface
• D、the IPostBackDataHandler interface

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