具有3个结点的二叉树有（　　）。

A、2种形态

B、4种形态

C、7种形态

D、5种形态

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

On a POWER7 processor based server what is the minimum number of cores used by the Hypervisor to run four threads?（）

A、1

B、2

C、4

D、8

Which two statements about the Adaptive Services PIC are true? （）

The Adaptive Services PIC supports the Layer 3 service package by default.

The Adaptive Services PIC is required when using the secure shell to access an M-series router.

The Adaptive Services PIC can be configured for the Layer 2 and Layer 3 service packages simultaneously.

The Adaptive Services PIC can be configured for either the Layer 2 or the Layer 3 service package but not both at the same time.

（）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

What are two ways to create a rescue configuration on a J-series router?（）

Use the J-Web System > Rescue menu.

Use the J-Web Configuration > Rescue menu.

Issue the configure rescue save command.

Issue the request system configuration rescue save command.