Logical System Communication JN0-637 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Which VPN technology is often used to create a secure tunnel between logical systems?

   • AMPLS
   • BSTP
   • CIPsec
   • DVLAN tagging
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2. 7foundation · easy

   What is the default behavior for traffic between two logical systems on the same Junos device?

   • ATraffic is allowed but logged for security auditing.
   • BTraffic is blocked unless a routing instance or interface connection is explicitly configured.
   • CTraffic is permitted only if both logical systems are in the same security zone.
   • DTraffic is forwarded automatically using the inet.0 routing table.
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4. 8foundation · easy

   Which configuration element is commonly used to enable routing between two logical systems?

   • AManagement Ethernet (me) interfaces
   • BLogical tunnel (lt) interfaces
   • CRedundant Ethernet (reth) interfaces
   • DLoopback (lo) interfaces
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5. 9foundation · easy

   What is the first step in troubleshooting communication issues between logical systems?

   • ACheck the routing tables and interface status of the involved logical systems
   • BReboot the device to clear any configuration errors
   • CVerify that the logical systems are in the same security zone
   • DDisable all firewall filters to allow traffic
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6. 10application · medium

   A managed service provider has two logical systems on a single router: LS-ClientA and LS-ClientB. Both use the same private IP subnet 192.168.1.0/24 internally. The provider needs to allow LS-ClientA to reach a server in LS-ClientB at 192.168.1.10 without changing the client's internal addressing. The provider has already set up an lt-0/0/0 link between the two logical systems. What must be configured to make this work?

   • AUse a GRE tunnel between the two logical systems with different tunnel IP addresses.
   • BConfigure a static route in LS-ClientA pointing 192.168.1.0/24 to the lt interface, and a static route in LS-ClientB pointing the same subnet back.
   • CEnable proxy ARP on the lt interfaces in both logical systems.
   • DConfigure static NAT on LS-ClientA's lt interface to translate the destination 192.168.1.10 to a unique address in LS-ClientB's subnet.
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