在MTU较小的网络，需将数据报分成若干较小的部分进行传输，这种较小的部分叫做 ( )。A. 组 B.片 C.段 D.节
查看答案
如果网络层使用数据报服务，那么()。A.仅在连接建立时做一次路由选择B.为每个到来的分组做路由选择C.仅在网络拥塞时做新的路由选择D.不必做路由选择
A
B
C
D
路由器工作于()，用于连接多个逻辑上分开的网络。A.物理层 B.网络层 C .数据链路层 D.传输层
A
B
C
D
Q:What is the actual reason that Katy doesn’t want to attend Jason’s party?
A. None of her friends likes Jason.
B. None of Jason’s guests is young.
C. She wants to go to Linda’s party.
D. She went to Jason’s party last year.
Q:What is special about Linda’s party?
A. The party will last four hours.
B. Six people will attend the party.
C. They will have huge bags of candy.
D. They will play a new game called “Guess Who”.
微信支付 
支付宝支付