NAPT allows multiple private IP addresses to be mapped to the same public P address through different port numbers. The following description of the port number in NAPT is correct ().

• A.Need to use ACL to assign port numbers
• B.No need to do any configuration about port number
• C.Only need to configure the range of port numbers
• D.The correspondence between port numbers and private addresses must be manually configured

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The configuration information of a certain port of the switch is shown in the figure. Which of the following statements is wrong? () (Single-choice question)

• A.If the port receives a data frame without VLAN TAG, the switch needs to add VLAN TAG100
• B.If the VLAN TAG carried in the data frame is 100, the switch will strip off the VLAN TAG and send it out
• C.If the VLAN TAG carried in the data frame is 200, the switch will strip off the VLAN TAG and send it out
• D.The port type is Hybrid

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Which of the following statements about link aggregation are correct? ()

• A.Eth-Trurnk interfaces cannot be nested
• B.GE electrical interfaces and GE optical interfaces cannot be added to the same Eth-Trurnk interface
• C.When two devices are connected, it is necessary to ensure that the link aggregation mode on both devices is the same
• D.GE interface and FE interface cannot be added to the same Eth-Trunk interface

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In order to realize the network layer function on the VLANIF interface, do you need to configure it on the VLANIF interface? ()

• A.IP prefix
• B.MAC.Address
• C.Subnet mask
• D.IP address

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Link aggregation is a common technology in enterprise networks. Which of the following descriptions are the advantages of link aggregation technology?

• A.Improve safety
• B.Increase bandwidth
• C.Realize load sharing
• D.Improve reliability

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