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JN0-696 · Question #5

JN0-696 Question #5: Real Exam Question with Answer & Explanation

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Question

user@host> show security flow session ... Session ID. 41, Policy name: allow/5, Timeout: 20, Valid In: 172.168.66.143/43886 --> 192.168.100.1/5000;tcp, If: ge-0/0/1.0, Pkts: 1, Bytes: 60 Out: 10.100.1.100/5555 --> 172.168.66.143/43886;tcp, If: ge-0/0/2.0, Pkts: 0, Bytes: 0 user@host> show configuration ... security { nat { destination { pool server { address 10.100.1.100/32 port 5555; } rule-set rule1 { from zone UNTRUST; rule 1 { match { destination-address 192.168.100.1/32; destination-port 5000; } then { destination-nat pool server; } } } } proxy-arp { interface ge-0/0/1.0 { address { 192.168.100.1/32; } } } } policies { from-zone UNTRUST to-zone TRUST { policy allow { match { source-address any; destination-address any; application [ junos-ping tcp-5000 ]; } then { permit; } } } } zones { security-zone TRUST { interfaces { ge-0/0/2.0 { host-inbound-traffic { protocols { all; } } } } } security-zone UNTRUST { interfaces { ge-0/0/1.0 { host-inbound-traffic { system-services { ping; } } } } } } } applications { application tcp-5000 { protocol tcp; destination-port 5000; } } Your customer is attempting to reach your new server that should be accessible publicly using 192.168.100.100 on TCP port 5000, and internally using 10.100.100.1 on TCP port 5555. You notice a session forms when they attempt to access the server, but they are unable to reach the server. Referring to the exhibit, what will resolve this problem?

Options

  • AThere must be a TRUST-to-UNTRUST security policy to allow return traffic.
  • BThe NAT pool server address must be changed to 10.100.100.1/32.
  • CThe NAT pool server port must be changed to 5000.
  • DThe NAT rule set rule1 must match on address 172.168.66.143.

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