Which port does SMTP use by default?
A、 TCP port 21
B、 TCP port 25
C、 UDP port 25
D、 UDP port 21
发布时间：2025-01-31 15:48:19
请在 下方输入 要搜索的题目：
推荐参考答案 (
由 快搜搜题库 官方老师解答 )
答案：B
相关试题
- 1.Which port does SMTP use by default?
- 2.Which of the following is the default SMTP port?（）A、21B、22C、23D、25
- 3.The default port for http is:
- 4.Which of these does the author NOT use?
- 5.The default TCP port number of FTP site is ( ).
- 6.Which word does McCormack suggest to use to make a mind map?
- 7.Which phrase does Adriana use to ask about Marco’s hotel requirements? （ ）
- 8.If you want to use PICO to develop your search question, which of the following does not belong to PICO
- 9.Which type of supporting evidence does the following statement use?
- 10.What does Denise use Instant Messenger for?
