单项选择题

Host A opens a Telnet connection to Host B. Host A then opens another Telnet connectionto Host B. These connections are the only communication between Host A and Host B. Thesecurity policy configuration permits both connections.How many flows exist between Host A and Host B？（）

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

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多项选择题

Which two functions of JUNOS Software are handled by the data plane？（）

A.NAT
B.OSPF
C.SNMP
D.SCREEN options

多项选择题

What are two components of the JUNOS Software architecture？（）

A.Linux kernel
B.routing protocol daemon
C.session-based forwarding module
D.separate routing and security planes

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Which three functions are provided by JUNOS Software for security platforms？（）

A.VPN establishment
B.stateful ARP lookups
C.Dynamic ARP inspection
D.Network Address Translation
E.inspection of packets at higher levels （Layer 4 and above）