题目内容
（请给出正确答案）
[单选题]
Which port does FTP use for a control connection？（)
A.21
B.25
C.53
D.162
单选题，请选择你认为正确的答案：
提交
查看答案
如搜索结果不匹配，请 联系老师 获取答案
A.SFTP
B.FTP
C.HTTP
D.HTTPS
更多“Which port does FTP use for a …”相关的问题
第3题
Which port does SMTP use by default？（)
A.TCP port 21
B.TCP port 25
C.UDP port 25
D.UDP port 21
第4题
On which destination port in the Layer 4 header does BGP listen？（）
A.UDP port 169
B. TCP port 169
C. UDP port 179
D. TCP port 179
第6题
In which Spanning-Tree states does a switch port learn MAC addresses？ （Select two)A．Blocki
In which Spanning-Tree states does a switch port learn MAC addresses？ (Select two)
A．Blocking
B．Listening
C．Forwarding
D．Learning
E．Relaying
第7题
In which Spanning-Tree states does a switch port learn MAC addresses？（）
A.Blocking
B. Listening
C. Forwarding
D. Learning
E. Relaying
第8题
Which interface does the Infranet Controller use to push the configuration？ （）
A. trusted port
B. internal port
C. trust interface
D. untrust interface
第9题
Which of the following modes does PTP port work in？（)
A.manual mode
B.SSM protocol mode
C.Auto Select mode
D.1588 optimal main clock
第10题
Which security feature does NNTP possess that SMTP does not？（)
A.Dynamic port assignment
B.Separate control and data ports
C.Usable in conjunction with SSL
D.Strict bounds checking on arrays
