Juniper JN0-364 Practice Test 6
Question 50
A Junos service-provider engineer is reviewing this operational case: A customer asks to steer only a test application into an alternate transport table. What specific configuration or diagnostic action BEST implements the intended response? Select ONE best answer.
- Enable supported RSTP and verify the correct point-to-point role handling
- Build a precise match and a supported routing-instance action with a safe fall-through
- Define contributing-route conditions and the intended generated route
- Configure the appropriate aggregate and review contributing routes before export
Explanation
Correct Answer
B:Build a precise match and a supported routing-instance action with a safe fall-through is the best implementation and troubleshooting step for this Junos service-provider case: A customer asks to steer only a test application into an alternate transport table. Technical basis: Firewall filter routing actions can select forwarding instances for traffic that matches explicit filter terms.
Incorrect Answers
A:That option concerns RSTP rapid transitions. Firewall filter routing actions can select forwarding instances for traffic that matches explicit filter terms.
C:Define contributing-route conditions and the intended generated route is relevant to the different engineering topic "Generated-route dependencies", but it is not the most directly supported implementation and troubleshooting step for this precise case: A customer asks to steer only a test application into an alternate transport table. the best answer here is: Build a precise match and a supported routing-instance action with a safe fall-through.
D:Configure the appropriate aggregate and review contributing routes before export is relevant to the different engineering topic "Aggregate-route contributor activation", but it is not the most directly supported implementation and troubleshooting step for this precise case: A customer asks to steer only a test application into an alternate transport table. the best answer here is: Build a precise match and a supported routing-instance action with a safe fall-through.
Question 51
A Junos service-provider engineer is reviewing this operational case: A customer asks to steer only a test application into an alternate transport table. Which observation would MOST RELIABLY verify the intended outcome? Select ONE best answer.
- Only matched traffic uses the alternate forwarding context
- Each customer's route is present in its intended table without unintended leakage
- The suspect link remains guarded rather than creating a bridge loop
- The advertised default withdraws when the required valid contribution disappears
Explanation
Correct Answer
A:Only matched traffic uses the alternate forwarding context is the best operational verification evidence for this Junos service-provider case: A customer asks to steer only a test application into an alternate transport table. Technical basis: Firewall filter routing actions can select forwarding instances for traffic that matches explicit filter terms.
Incorrect Answers
B:That option concerns Routing-instance isolation. Firewall filter routing actions can select forwarding instances for traffic that matches explicit filter terms.
C:That option concerns Loop protection when BPDUs vanish. Firewall filter routing actions can select forwarding instances for traffic that matches explicit filter terms.
D:The advertised default withdraws when the required valid contribution disappears is relevant to the different engineering topic "Generated-route dependencies", but it is not the most directly supported operational verification evidence for this precise case: A customer asks to steer only a test application into an alternate transport table. the best answer here is: Only matched traffic uses the alternate forwarding context.
Question 52
A provider network team identifies this situation: A policy-based forwarding change affects unrelated application traffic. Which engineering decision BEST fits the stated requirement? Choose ONE best answer.
- Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active
- Validate security and protocol support before selecting GRE for a service-provider application
- Use filter-based forwarding on eligible incoming traffic to steer matching packets into the intended routing context
- Use qualified next hops to express different preference on alternate paths without inventing a universal equal-cost choice
Explanation
Correct Answer
C:Use filter-based forwarding on eligible incoming traffic to steer matching packets into the intended routing context is the best technical design or decision for this Junos service-provider case: A policy-based forwarding change affects unrelated application traffic. Technical basis: Firewall filter routing actions can select forwarding instances for traffic that matches explicit filter terms.
Incorrect Answers
A:That option concerns Static-route next-hop resolution. Firewall filter routing actions can select forwarding instances for traffic that matches explicit filter terms.
B:That option concerns GRE protocol and security limitations. Firewall filter routing actions can select forwarding instances for traffic that matches explicit filter terms.
D:That option concerns Qualified-next-hop selection. Firewall filter routing actions can select forwarding instances for traffic that matches explicit filter terms.
Question 53
A provider network team identifies this situation: A policy-based forwarding change affects unrelated application traffic. Which implementation or troubleshooting step is MOST APPROPRIATE here? Choose ONE best answer.
- Check active contributors and the aggregate route state, rather than forcing an unrelated static next hop
- Check flow hashing and next-hop eligibility rather than assuming per-packet distribution
- Check next-hop attributes and IGP reachability
- Inspect filter term order, conditions and resulting table lookup
Explanation
Correct Answer
D:Inspect filter term order, conditions and resulting table lookup is the best implementation and troubleshooting step for this Junos service-provider case: A policy-based forwarding change affects unrelated application traffic. Technical basis: Firewall filter routing actions can select forwarding instances for traffic that matches explicit filter terms.
Incorrect Answers
A:Check active contributors and the aggregate route state, rather than forcing an unrelated static next hop is relevant to the different engineering topic "Aggregate-route contributor activation", but it is not the most directly supported implementation and troubleshooting step for this precise case: A policy-based forwarding change affects unrelated application traffic. the best answer here is: Inspect filter term order, conditions and resulting table lookup.
B:Check flow hashing and next-hop eligibility rather than assuming per-packet distribution is relevant to the different engineering topic "Forwarding-table multipath", but it is not the most directly supported implementation and troubleshooting step for this precise case: A policy-based forwarding change affects unrelated application traffic. the best answer here is: Inspect filter term order, conditions and resulting table lookup.
C:That option concerns BGP next-hop reachability. Firewall filter routing actions can select forwarding instances for traffic that matches explicit filter terms.
Question 54
A provider network team identifies this situation: A policy-based forwarding change affects unrelated application traffic. What verification evidence MOST CLEARLY demonstrates the solution is working? Choose ONE best answer.
- The spare remains a nonroot participant
- The route is copied only to the tables selected by the group and policy
- Only the intended prefix treatment changes while reserved ranges remain protected
- Unmatched traffic continues through the expected default context
Explanation
Correct Answer
D:Unmatched traffic continues through the expected default context is the best operational verification evidence for this Junos service-provider case: A policy-based forwarding change affects unrelated application traffic. Technical basis: Firewall filter routing actions can select forwarding instances for traffic that matches explicit filter terms.
Incorrect Answers
A:That option concerns STP root bridge placement. Firewall filter routing actions can select forwarding instances for traffic that matches explicit filter terms.
B:That option concerns RIB-group route sharing. Firewall filter routing actions can select forwarding instances for traffic that matches explicit filter terms.
C:Only the intended prefix treatment changes while reserved ranges remain protected is relevant to the different engineering topic "Martian-prefix handling", but it is not the most directly supported operational verification evidence for this precise case: A policy-based forwarding change affects unrelated application traffic. the best answer here is: Unmatched traffic continues through the expected default context.
Question 55
A Junos service-provider engineer is reviewing this operational case: An advertised prefix appears in a protocol table yet traffic uses a different next hop. Which technical approach MOST DIRECTLY addresses the issue? Select ONE best answer.
- Use BPDU protection at true edge ports to react to unexpected switches
- Examine route detail and policy reasons when a valid-looking Junos route is hidden or inactive
- Use generated routes when a synthesized route should depend on contributing route information under policy
- Use a correctly scoped RIB group when eligible routes must be copied into multiple routing tables
Explanation
Correct Answer
B:Examine route detail and policy reasons when a valid-looking Junos route is hidden or inactive is the best technical design or decision for this Junos service-provider case: An advertised prefix appears in a protocol table yet traffic uses a different next hop. Technical basis: The routing information base can contain multiple candidate routes, but route preference, validity and import policy determine what becomes active.
Incorrect Answers
A:That option concerns BPDU protection for edge ports. The routing information base can contain multiple candidate routes, but route preference, validity and import policy determine what becomes active.
C:Use generated routes when a synthesized route should depend on contributing route information under policy is relevant to the different engineering topic "Generated-route dependencies", but it is not the most directly supported technical design or decision for this precise case: An advertised prefix appears in a protocol table yet traffic uses a different next hop. the best answer here is: Examine route detail and policy reasons when a valid-looking Junos route is hidden or inactive.
D:Use a correctly scoped RIB group when eligible routes must be copied into multiple routing tables is relevant to the different engineering topic "RIB-group route sharing", but it is not the most directly supported technical design or decision for this precise case: An advertised prefix appears in a protocol table yet traffic uses a different next hop. the best answer here is: Examine route detail and policy reasons when a valid-looking Junos route is hidden or inactive.
Question 56
A Junos service-provider engineer is reviewing this operational case: An advertised prefix appears in a protocol table yet traffic uses a different next hop. What specific configuration or diagnostic action BEST implements the intended response? Select ONE best answer.
- Inspect database description exchange and relevant mismatch counters
- Set qualified-next-hop preference intentionally and verify both gateway reachabilities
- Configure the appropriate aggregate and review contributing routes before export
- Inspect active status, route preferences and forwarding-table installation
Explanation
Correct Answer
D:Inspect active status, route preferences and forwarding-table installation is the best implementation and troubleshooting step for this Junos service-provider case: An advertised prefix appears in a protocol table yet traffic uses a different next hop. Technical basis: The routing information base can contain multiple candidate routes, but route preference, validity and import policy determine what becomes active.
Incorrect Answers
A:That option concerns OSPF LSDB synchronization. The routing information base can contain multiple candidate routes, but route preference, validity and import policy determine what becomes active.
B:Set qualified-next-hop preference intentionally and verify both gateway reachabilities is relevant to the different engineering topic "Qualified-next-hop selection", but it is not the most directly supported implementation and troubleshooting step for this precise case: An advertised prefix appears in a protocol table yet traffic uses a different next hop. the best answer here is: Inspect active status, route preferences and forwarding-table installation.
C:That option concerns Aggregate-route contributor activation. The routing information base can contain multiple candidate routes, but route preference, validity and import policy determine what becomes active.
Question 57
A Junos service-provider engineer is reviewing this operational case: An advertised prefix appears in a protocol table yet traffic uses a different next hop. Which observation would MOST RELIABLY verify the intended outcome? Select ONE best answer.
- Frames arrive in the intended bridge domain without a VLAN tag from the host
- Only matched traffic uses the alternate forwarding context
- The invalid route remains excluded or a reviewed exception is clearly scoped
- The chosen active route and actual forwarding next hop can be reconciled
Explanation
Correct Answer
D:The chosen active route and actual forwarding next hop can be reconciled is the best operational verification evidence for this Junos service-provider case: An advertised prefix appears in a protocol table yet traffic uses a different next hop. Technical basis: The routing information base can contain multiple candidate routes, but route preference, validity and import policy determine what becomes active.
Incorrect Answers
A:Frames arrive in the intended bridge domain without a VLAN tag from the host is relevant to the different engineering topic "Access port VLAN membership", but it is not the most directly supported operational verification evidence for this precise case: An advertised prefix appears in a protocol table yet traffic uses a different next hop. the best answer here is: The chosen active route and actual forwarding next hop can be reconciled.
B:That option concerns Filter-based forwarding. The routing information base can contain multiple candidate routes, but route preference, validity and import policy determine what becomes active.
C:That option concerns Martian-prefix handling. The routing information base can contain multiple candidate routes, but route preference, validity and import policy determine what becomes active.
Question 58
A provider network team identifies this situation: A BGP candidate appears hidden after a routing-policy change. Which engineering decision BEST fits the stated requirement? Choose ONE best answer.
- Examine route detail and policy reasons when a valid-looking Junos route is hidden or inactive
- Choose the correct Junos routing instance and interface membership to keep customer reachability independent
- Use a correctly scoped RIB group when eligible routes must be copied into multiple routing tables
- Understand unknown-destination unicast flooding within a bridge domain until learning occurs
Explanation
Correct Answer
A:Examine route detail and policy reasons when a valid-looking Junos route is hidden or inactive is the best technical design or decision for this Junos service-provider case: A BGP candidate appears hidden after a routing-policy change. Technical basis: The routing information base can contain multiple candidate routes, but route preference, validity and import policy determine what becomes active.
Incorrect Answers
B:That option concerns Routing-instance isolation. The routing information base can contain multiple candidate routes, but route preference, validity and import policy determine what becomes active.
C:Use a correctly scoped RIB group when eligible routes must be copied into multiple routing tables is relevant to the different engineering topic "RIB-group route sharing", but it is not the most directly supported technical design or decision for this precise case: A BGP candidate appears hidden after a routing-policy change. the best answer here is: Examine route detail and policy reasons when a valid-looking Junos route is hidden or inactive.
D:That option concerns Unknown unicast and flooding. The routing information base can contain multiple candidate routes, but route preference, validity and import policy determine what becomes active.
Question 59
A provider network team identifies this situation: A BGP candidate appears hidden after a routing-policy change. Which implementation or troubleshooting step is MOST APPROPRIATE here? Choose ONE best answer.
- Compare VLAN-to-port mapping and underlying physical connectivity
- Inspect contributing route selection and applied generation policy
- Inspect the hidden route reason and applicable policy decision
- Check flow hashing and next-hop eligibility rather than assuming per-packet distribution
Explanation
Correct Answer
C:Inspect the hidden route reason and applicable policy decision is the best implementation and troubleshooting step for this Junos service-provider case: A BGP candidate appears hidden after a routing-policy change. Technical basis: The routing information base can contain multiple candidate routes, but route preference, validity and import policy determine what becomes active.
Incorrect Answers
A:That option concerns Junos VLAN operational validation. The routing information base can contain multiple candidate routes, but route preference, validity and import policy determine what becomes active.
B:Inspect contributing route selection and applied generation policy is relevant to the different engineering topic "Generated-route dependencies", but it is not the most directly supported implementation and troubleshooting step for this precise case: A BGP candidate appears hidden after a routing-policy change. the best answer here is: Inspect the hidden route reason and applicable policy decision.
D:Check flow hashing and next-hop eligibility rather than assuming per-packet distribution is relevant to the different engineering topic "Forwarding-table multipath", but it is not the most directly supported implementation and troubleshooting step for this precise case: A BGP candidate appears hidden after a routing-policy change. the best answer here is: Inspect the hidden route reason and applicable policy decision.
Question 60
A provider network team identifies this situation: A BGP candidate appears hidden after a routing-policy change. What verification evidence MOST CLEARLY demonstrates the solution is working? Choose ONE best answer.
- The route is either correctly rejected or reaccepted by a focused configuration fix
- Forwarding changes according to configured path preference rather than random distribution
- The endpoint MAC is learned in the expected VLAN
- Distribution agrees with the supported hashing method over a representative set of flows
Explanation
Correct Answer
A:The route is either correctly rejected or reaccepted by a focused configuration fix is the best operational verification evidence for this Junos service-provider case: A BGP candidate appears hidden after a routing-policy change. Technical basis: The routing information base can contain multiple candidate routes, but route preference, validity and import policy determine what becomes active.
Incorrect Answers
B:Forwarding changes according to configured path preference rather than random distribution is relevant to the different engineering topic "Qualified-next-hop selection", but it is not the most directly supported operational verification evidence for this precise case: A BGP candidate appears hidden after a routing-policy change. the best answer here is: The route is either correctly rejected or reaccepted by a focused configuration fix.
C:The endpoint MAC is learned in the expected VLAN is relevant to the different engineering topic "Access port VLAN membership", but it is not the most directly supported operational verification evidence for this precise case: A BGP candidate appears hidden after a routing-policy change. the best answer here is: The route is either correctly rejected or reaccepted by a focused configuration fix.
D:Distribution agrees with the supported hashing method over a representative set of flows is relevant to the different engineering topic "Forwarding-table multipath", but it is not the most directly supported operational verification evidence for this precise case: A BGP candidate appears hidden after a routing-policy change. the best answer here is: The route is either correctly rejected or reaccepted by a focused configuration fix.