华为交换机配置中，设置端口模式为access并将端口加入vlan 2中的配置命令是（ ）。 A: switchport access vlan 2 switchport mode access B: port link-type access port default vlan 2 C: port link-type access port default pvid vlan 2 D: port link-type access port trunk allow-pass vlan 2

‏在某交换机上添加了2个VLAN，第一个VLAN的VLAN ID为20，包含Port2和Port3、Untagged，第二个VLAN的VLAN ID为30，包含Port3、Untagged，设置Port2的VID为20，Port3的VID为30，则这两个端口连接的设备的连通情况为‏ A: 仅Port2能访问Port3 B: Port2和Port3能互相访问 C: 仅Port3能访问Port2 D: Port2和Port3不能互相访问

8255有三种工作方式:方式0、方式1和方式2,其中方式2能用于( )。 A: PORT A B: PORT B C: PORT C D: A、B、C都可以

根据如下所示的命令，下列描述中正确的是（）。 [Huawei-GigabitEthernet0/0/1]port link-type access [Huawei-GigabitEthernet0/0/1]port default vlan 10 [Huawei-GigabitEthernet0/0/2]port link-type trunk [Huawei-GigabitEthernet0/0/2]port trunk allow-pass vlan 10

已知AX=8060H，DX=580H，端口PORT1的地址为40H，内容为4FH，端口PORT2的地址为44H，指出执行下列指令后的结果在那儿？为多少? （1）OUT DX，AX （2）IN AX，40H （3）OUT PORT2，AL

Which three flow-control port states lead to enabled link flow control？ （） A:  Receive port： Enabled， Transmit port： Enabled B:  Receive port： Enabled， Transmit port： Desired C:  Receive port： Enabled， Transmit port： Disabled D:  Receive port： Disabled， Transmit port： Desired E:  Receive port： Desired， Transmit port： Desired

The port in which crew or passengers go on board the ship is called（）. A: port of call B: port of embarkation C: port of destination D: port of disembarkatio

CIF should be followed by( )． A: port of transshipment B: port of destination C: port of call D: port of shipment

In CIF the risk passes at _______ while the costs are transferred at _________. A: port of shipment, place of destination B: port of shipment, port of destination C: port of destination, place of shipment D: port of destination, port of shipment

The term FOB should be followed by _________ A: port of importing B: port of shipment C: port of discharge D: port of origin