【单选题】当两套系统使用Internet连接时,通常与L2TP一同使用IPSec以保证数据安全。以下回答中正确表述了这些协议所工作的OSI网络层次的是哪一个()
A.
IPSec工作在网络层,L2TP工作在传输层
B.
IPSec工作在传输层,L2TP工作在物理层
C.
IPSec工作在网络层,L2TP工作在数据链路层
【单选题】Little ____ about what others think.
【单选题】He doesn’t have anything to say. He doesn’t know ____ the student.
【单选题】当实心圆轴的直径增加1倍,则其抗扭强度、抗扭刚度将分别提高到原来的( )倍。
【单选题】What does the man mean?
A.
He doesn’t have a ticket.
B.
He doesn’t like volleyball.
C.
He is not invited to the game.
【单选题】当实心圆轴的直径增加1倍,则其抗扭强度、抗扭刚度将分别提高到原来的 倍
【单选题】以下哪一项工作在网络层?它能将一条线路上进入的分组接收后转发到另一条线路上,这些线路可以属于不同的网络,并且使用不同的协议
【单选题】He doesn’t have anything to say. He doesn’t know ____ the student.
【简答题】Nick is a knight(骑士). But he doesn’t like to ride and he doesn’t like to fight. Nick likes to read and write, and he likes to knit(编织). One night, there was a knock at the door. “I need you to fight a...
【简答题】A. He doesn’t like it. B. He has a toothache. C. He wants to save it. D. He has trouble opening his mouth. 2. A. He doesn’t like the color. B. He doesn’t like the style. C. He doesn’t have enough mone...