下列函数返回类型为数值型的是( )。
A、STR
B、VAL
C、DTOC
D、TTOC
What are two ways to create a rescue configuration on a J-series router?()
AUse the J-Web System > Rescue menu.
BUse the J-Web Configuration > Rescue menu.
CIssue the configure rescue save command.
DIssue the request system configuration rescue save command.
在路由器上从下面哪个模式可以进行接口配置模式()。
A、用户模式
B、特权模式
C、全局配置模式
D、安全模式
模拟信号的数字化需要三个步骤,下列()不属于其中。
A、量化
B、编码
C、调制
D、抽样
()网的出现,为Internet以及网络标准化建设打下了坚实的基础。
A、Ethernet
B、ARPAnet
C、NSFnet
D、Internet
Which two statements about the Adaptive Services PIC are true? ()
AThe Adaptive Services PIC supports the Layer 3 service package by default.
BThe Adaptive Services PIC is required when using the secure shell to access an M-series router.
CThe Adaptive Services PIC can be configured for the Layer 2 and Layer 3 service packages simultaneously.
DThe Adaptive Services PIC can be configured for either the Layer 2 or the Layer 3 service package but not both at the same time.