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 sessions exist between Host A and Host B?（）

A.1
B.2
C.3
D.4

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单项选择题
You want to create an out-of-band management zone and assign the ge-0 0 0.0 interface to that zone.From the [edit] hierarchy, which command do you use to configure this assignment?（）

A. set security zones management interfaces ge-0/0/0.0
B. set zones functional-zone management interfaces ge-0/0/0.0
C. set security zones functional-zone management interfaces ge-0/0/0.0
D. set security zones functional-zone out-of-band interfaces ge-0/0/0.0
单项选择题
Which statement is true about a NAT rule action of off?（）

A. The NAT action of off is only supported for destination NAT rule-sets.
B. The NAT action of off is only supported for source NAT rule-sets.
C. The NAT action of off is useful for detailed control of NAT.
D. The NAT action of off is useful for disabling NAT when a pool is exhausted
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