某PIX525防火墙有如下配置命令，该命令的正确解释是（）。
firewall（config）#nat（inside）10.0.0.00.0.0.0
A.启用NAT，设定内网的0.0.0.0主机可访问外网0.0.0.0主机
B.启用NAT，设定内网的所有主机均可访问外网
C.对访问外网的内网主机不作地址转换
D.对访问外网的内网主机进行任意的地址转换
参考答案：B
| 阅读理解。 |
| Jim was five years old. On his birthday he got a lot of birthday presents from his family,and one of them was a beautiful drum (鼓). It was from his grandpa. Jim liked his drum very much.He made a terrible noise with it, but his mother didn't mind. His father was working during the day, and Jim was in bed when he got home in the evening, so he didn't hear the noise. But one of the neighbors didn't like the noise, so one morning a few days later, she took a sharp knife and went to Jim's house while he was hitting his drum. She said, "Jimmy, do you know there's something nice inside your drum? Here's a knife. Open the drum and see what it is." |
| 1. Jim's gave him a drum on his birthday. |
[ ] |
| A. grandmother B. mother C. grandfather D.father |
| 2. liked the drum very much. |
[ ] |
| A. Jim B. Jim's father C. Jim's mother D. Jim's neighbor |
| 3. , Jim made a terrible noise with the drum. |
[ ] |
| A. Day and night B. Only during the day C. Only during the night D. When his dad was at home |
| 4. There was inside the drum. |
[ ] |
| A. something nice B. a nice knife C. nothing D. a lot of things |
| 5. The neighbor . |
[ ] |
| A. liked Jim very much B. gave him a sharp knife as his birthday present C. didn't want to hear the noise any more D. told him to stop hitting the drum |