What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology?（）A、lowest port MAC addressB、port priority number and MAC address.C、VTP revision numberD、highest port priority number.E、path cost

第1题：

第2题：

IP routing protocols， such as OSPF and Enhanced EIGRP， are used primarily in network designs that contain entry and exit points to the network from service providers. What is a common trait of IP routing  protocols？（）  

• A、 They add needed overhead in smaller deployments.
• B、 They are essential for optimum and redundant forwarding.
• C、 They are used primarily in larger network designs，to support different networks and single entry and  exit points.
• D、 They are usually necessary in smaller deployments.

第3题：

What are two things that an access point （AP） does when it receives an 802.11 frame from a Wi-Fi Multimedia （WMM） client？ （）

• A、EAP-FASTEAP-FAS Access Point Protocol （LWAPP） packet is used to generate an 802.1 p priority value in the packets， which are sent to an Ethernet switch by the controllers.
• B、The AP will police the 802.1 le priority value to ensure it does not exceed the maximum value allowed for the QoS policy that is assigned to that client.
• C、Once the LWAPP packet is received， the AP generates the IEEE 802.1 p priority value.
• D、The AP will map the 802.11e priority value to the DSCP value.
• E、The AP will map the DSCP value to the outer LWAPP frame.

第4题：

What type of constraint is used to ensure that each row inserted into the EMPLOYEE table with a value in the WORKDEPT column has a row with a corresponding value in the DEPTNO column of the DEPARTMENT table?（）

• A、A check constraint on the EMPLOYEE table
• B、A unique constraint on the EMPLOYEE table WORKDEPT column
• C、A foreign key reference from the DEPARTMENT tables DEPTNO column to the WORKDEPT column of the EMPLOYEE table
• D、A foreign key reference from the EMPLOYEE tables WORKDEPT column to the DEPTNO column of the DEPARTMENT table

第5题：

What does it mean for a variable in the Application Editor to be defined as a parameter?（）

• A、The variable can be used to pass data to and from subflows.  
• B、The value for that variable can be supplied via Application Configuration in Application Administration.  
• C、The value for that variable is defined by the calling application.  
• D、The variable can be used in conditional steps.  
• E、The variable can be used to pass data to and from VoiceXML applications.

第6题：

第7题：

第8题：

第9题：

第10题：

第11题：

第12题：

第13题：

第14题：

What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-treetopology?（）

• A、lowest port MAC address
• B、port priority number and MAC address.
• C、VTP revision number
• D、highest port priority number.
• E、pathcost

第15题：

Which of these statements about penultimate hop popping are true？（）

• A、It is used only for directly connected subnets or aggregate routes
• B、It can only be used with LDP.
• C、It is only used when two or more labels are stacked.
• D、It enables the Edge LSR to request a label pop operation from Its upstream neighbors
• E、It is requested through TDP using a special label value that is also called the implicit-null value.
• F、It is requested through LDP using a special label value that is also called the implicit-null value.

第16题：

What is the most common value of the hysteresis used when estimating margins for log-normal fading? （）

• A、3dB
• B、35dB
• C、36dB
• D、38dB
• E、20dB

第17题：

What is the Flush Input Buffer setting used for in the Input tab of the Menu step?（）

• A、to release memory held by the prompt variable  
• B、to clear the value of the menu choice before the prompt is played  
• C、to prevent the previous value from being used again on the menu choice  
• D、to prevent the caller from entering a menu choice before the prompt has played

第18题：

第19题：

第20题：

第21题：

第22题：

第23题：