使用单臂路由技术实现VLAN间的互访，下面哪一条命令可以正确为VLAN5定义一个子接口？（） A: Router(config-if)encapsulation dot1Q 5 B: Router(config-if)encapsulation dot1Q vlan 5 C: Router(config-subif)encapsulation dot1Q 5 D: Router(config-subif)encapsulation dot1Q vlan 5

Which of these is not a fundamental features of OOP A: Encapsulation B: Inheritance C: Instantiation D: Polymorphism

Which of the following is NOT one of the 3 characteristics of object-oriented programming? A: extensibility B: inheritance C: encapsulation D: polymorphism

Which of the following can be the consequences of necrosis? A: Lysis and absorption B: Isolation and elimination C: Organization D: Encapsulation and Calcification

​将数据与操作打包成一个单位，这种OOP的特性称为封装。‎​Packaging data and operations into a single unit is a feature of OOP called encapsulation.‎

Object-oriented programming allows you to derive new classes from existing classes. This is called ____________. A: encapsulation B: inheritance C: abstraction D: generalization

中国大学MOOC: 将数据与操作打包成一个单位，这种OOP的特性称为封装。Packaging data and operations into a single unit is a feature of OOP called encapsulation.

将数据与操作打包成一个单位，这种OOP的特性称为封装。Packaging data and operations into a single unit is a feature of OOP called encapsulation. A: 正确 B: 错误

______ is a property of object—oriented software by which an abstract operation may be performed in different ways in different classes． A: Method B: Polymorphism C: Inheritance D: Encapsulation

配置单臂路由过程中，下列那条命令是不必要的？ A: interface fastEthernet B: no shutdown C: encapsulation dot1Q D: vlan database