多选题Flex Links are a pair of a Layer 2 interfaces (switchports or port channels), where one interface is configured to act as a backup to the other. Which two statements are correct regarding Flex Links?（）AAn interface can only belong to single Flex Links.

第1题：

第2题：

Which of the following statements regarding the use of multiple access lists are valid when configuring a single interface on a Cisco router?（）

• A、Application of up to three access lists per protocol to a single interface.
• B、No more than two access lists per interface.
• C、One access list may be configured per direction for each Layer 3 protocol configured on an interface.
• D、The maximum number allowed varies due to RAM availability in the router.
• E、An infinite number of access lists that can be applied to an interface, from most specific to most general.
• F、Cisco IOS allows only one access list to an interface.

第3题：

第4题：

Which two statements are correct regarding Flex Links？ （）

• A、 An interface can belong to multiple Flex Links.
• B、 Flex Links operate only over single pairs of links.
• C、 Flex Link pairs must be of the same interface type
• D、 Flex Links automatically disable STP so no BPDUs are propagated
• E、 Failover from active to standby on Flex Links takes less than a second

第5题：

Overlay Transport Virtualization （OTV） join interface is used to source the OTV encapsulated traffic and send it to the Layer 3 domain of the data center network. Which statements are true about OTV join interface？ （）

• A、 Join interface is a Layer 3 entity， and with the Cisco NX-OS release 6.0， it can only be defined as a physical interface， physical subinterface， Layer 3 port channel， or Layer 3 port channel subinterface.
• B、 A single join interface can be defined and associated with a given OTV overlay.
• C、 Multiple overlays can also share the same join interface.
• D、 Join interface can be a loopback interface.
• E、 The join interface is a Layer 3 entity that can be defined as a physical interface but not as a logical one.

第6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7题：

Choose the two correct statements regarding Oracle WebLogic Server（）

• A、 a server instance can be associated with multiple machines
• B、 a machine can be associated with multiple server instance 
• C、 a server instance can be associated with only a single machine 
• D、 a machine can be associated with only one server instance

第8题：

第9题：

Each port that is configured to use LACP has an LACP port priority. Which statements are true about LACP port priority？ （）

• A、 Port priority value can be configured between 1 and 65535.
• B、 A higher port priority value means a higher priority of LACP.
• C、 Port priority can be configured so that specific links can be chosen as active links rather than the hot standby links within the port channel.
• D、 LACP uses the port priority with the port number to form the port identifier.
• E、 LACP Port priority default value should always be changed

第10题：

Which of these is true regarding the configuration and application of port access control lists？ （）

• A、PACLs can be applied in the inbound or outbound direction of a Layer 2 physical interface. 
• B、At Layer 2， a MAC address PACL will take precedence over any existing Layer 3 PACL.
• C、When you apply a port ACL to a trunk port， the ACL filters traffic on all VLANs present on the trunk port.
• D、PACLs are not supported on EtherChannel interfaces.