多项选择题
A. from a zone to the router itself
B. from a zone to the same zone
C. from a zone to a different zone
D. from one interface to another interface
单项选择题 You are not able to telnet to the interface IP of your JUNOS software with enhanced services devicefrom a PC on the same subnet. What is causing the problem? （）
多项选择题 Which two statements regarding asymmetric key encryption are true?（） (Choose two.)
单项选择题 Host A opens a Telnet connection to Host B. Host A then opens another Telnet connection to Host B. These connections are the only communication between Host A and Host B. The security policy configuration permits both connections. How many flows exist between Host A and Host B? （）