Juniper JN0-364 Practice Test 4
Question 30
A provider network team identifies this situation: A valid internal laboratory prefix is unexpectedly suppressed by an address-classification rule. What verification evidence MOST CLEARLY demonstrates the solution is working? Choose ONE best answer.
- The IRB responds for its gateway address on the intended VLAN
- Only the intended prefix treatment changes while reserved ranges remain protected
- The route is either correctly rejected or reaccepted by a focused configuration fix
- Forwarding changes according to configured path preference rather than random distribution
Explanation
Correct Answer
B:Only the intended prefix treatment changes while reserved ranges remain protected is the best operational verification evidence for this Junos service-provider case: A valid internal laboratory prefix is unexpectedly suppressed by an address-classification rule. Technical basis: Martian routes classify prohibited or exceptional destination prefixes and can affect route acceptance or installation.
Incorrect Answers
A:That option concerns Integrated routing and bridging. Martian routes classify prohibited or exceptional destination prefixes and can affect route acceptance or installation.
C:The route is either correctly rejected or reaccepted by a focused configuration fix is relevant to the different engineering topic "Active-route versus hidden-route triage", but it is not the most directly supported operational verification evidence for this precise case: A valid internal laboratory prefix is unexpectedly suppressed by an address-classification rule. the best answer here is: Only the intended prefix treatment changes while reserved ranges remain protected.
D: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 valid internal laboratory prefix is unexpectedly suppressed by an address-classification rule. the best answer here is: Only the intended prefix treatment changes while reserved ranges remain protected.
Question 31
A Junos service-provider engineer is reviewing this operational case: Two logically separate service contexts require a selected interface route to be visible in another RIB. Which technical approach MOST DIRECTLY addresses the issue? Select ONE best answer.
- 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
- Verify equal-cost routing and forwarding-table export behavior before claiming traffic will balance across paths
- Recognize a type-two Network LSA generated for an appropriate transit multi-access OSPF network
Explanation
Correct Answer
B:Use a correctly scoped RIB group when eligible routes must be copied into multiple routing tables is the best technical design or decision for this Junos service-provider case: Two logically separate service contexts require a selected interface route to be visible in another RIB. Technical basis: A RIB group controls the tables in which selected routes are installed but does not itself create an L3 forwarding neighbor.
Incorrect Answers
A:That option concerns Generated-route dependencies. A RIB group controls the tables in which selected routes are installed but does not itself create an L3 forwarding neighbor.
C:That option concerns Forwarding-table multipath. A RIB group controls the tables in which selected routes are installed but does not itself create an L3 forwarding neighbor.
D:Recognize a type-two Network LSA generated for an appropriate transit multi-access OSPF network is relevant to the different engineering topic "Network-LSA type-two interpretation", but it is not the most directly supported technical design or decision for this precise case: Two logically separate service contexts require a selected interface route to be visible in another RIB. the best answer here is: Use a correctly scoped RIB group when eligible routes must be copied into multiple routing tables.
Question 32
A Junos service-provider engineer is reviewing this operational case: Two logically separate service contexts require a selected interface route to be visible in another RIB. What specific configuration or diagnostic action BEST implements the intended response? Select ONE best answer.
- Inspect the MAC forwarding table for the relevant VLAN and physical interface
- Inspect the martian list and route handling before considering a justified exception
- Configure an allowed RIB group with the intended table ordering and policy
- Inspect active status, route preferences and forwarding-table installation
Explanation
Correct Answer
C:Configure an allowed RIB group with the intended table ordering and policy is the best implementation and troubleshooting step for this Junos service-provider case: Two logically separate service contexts require a selected interface route to be visible in another RIB. Technical basis: A RIB group controls the tables in which selected routes are installed but does not itself create an L3 forwarding neighbor.
Incorrect Answers
A:That option concerns MAC-address dynamic learning. A RIB group controls the tables in which selected routes are installed but does not itself create an L3 forwarding neighbor.
B:That option concerns Martian-prefix handling. A RIB group controls the tables in which selected routes are installed but does not itself create an L3 forwarding neighbor.
D:Inspect active status, route preferences and forwarding-table installation is relevant to the different engineering topic "Active-route versus hidden-route triage", but it is not the most directly supported implementation and troubleshooting step for this precise case: Two logically separate service contexts require a selected interface route to be visible in another RIB. the best answer here is: Configure an allowed RIB group with the intended table ordering and policy.
Question 33
A Junos service-provider engineer is reviewing this operational case: Two logically separate service contexts require a selected interface route to be visible in another RIB. Which observation would MOST RELIABLY verify the intended outcome? Select ONE best answer.
- The intended route becomes active and forwarding reaches the neighbor
- The advertising DR represents the broadcast segment accurately
- The chosen active route and actual forwarding next hop can be reconciled
- Only selected eligible routes appear in both target routing tables
Explanation
Correct Answer
D:Only selected eligible routes appear in both target routing tables is the best operational verification evidence for this Junos service-provider case: Two logically separate service contexts require a selected interface route to be visible in another RIB. Technical basis: A RIB group controls the tables in which selected routes are installed but does not itself create an L3 forwarding neighbor.
Incorrect Answers
A:The intended route becomes active and forwarding reaches the neighbor is relevant to the different engineering topic "Static-route next-hop resolution", but it is not the most directly supported operational verification evidence for this precise case: Two logically separate service contexts require a selected interface route to be visible in another RIB. the best answer here is: Only selected eligible routes appear in both target routing tables.
B:The advertising DR represents the broadcast segment accurately is relevant to the different engineering topic "Network-LSA type-two interpretation", but it is not the most directly supported operational verification evidence for this precise case: Two logically separate service contexts require a selected interface route to be visible in another RIB. the best answer here is: Only selected eligible routes appear in both target routing tables.
C:The chosen active route and actual forwarding next hop can be reconciled is relevant to the different engineering topic "Active-route versus hidden-route triage", but it is not the most directly supported operational verification evidence for this precise case: Two logically separate service contexts require a selected interface route to be visible in another RIB. the best answer here is: Only selected eligible routes appear in both target routing tables.
Question 34
A provider network team identifies this situation: An imported route is absent from a secondary table after activating a RIB group. Which engineering decision BEST fits the stated requirement? Choose ONE best answer.
- Use filter-based forwarding on eligible incoming traffic to steer matching packets into the intended routing context
- Verify the BGP NEXT_HOP resolves in the correct table before expecting installation
- Use a correctly scoped RIB group when eligible routes must be copied into multiple routing tables
- Examine route detail and policy reasons when a valid-looking Junos route is hidden or inactive
Explanation
Correct Answer
C:Use a correctly scoped RIB group when eligible routes must be copied into multiple routing tables is the best technical design or decision for this Junos service-provider case: An imported route is absent from a secondary table after activating a RIB group. Technical basis: A RIB group controls the tables in which selected routes are installed but does not itself create an L3 forwarding neighbor.
Incorrect Answers
A:Use filter-based forwarding on eligible incoming traffic to steer matching packets into the intended routing context is relevant to the different engineering topic "Filter-based forwarding", but it is not the most directly supported technical design or decision for this precise case: An imported route is absent from a secondary table after activating a RIB group. the best answer here is: Use a correctly scoped RIB group when eligible routes must be copied into multiple routing tables.
B:That option concerns BGP next-hop reachability. A RIB group controls the tables in which selected routes are installed but does not itself create an L3 forwarding neighbor.
D:Examine route detail and policy reasons when a valid-looking Junos route is hidden or inactive is relevant to the different engineering topic "Active-route versus hidden-route triage", but it is not the most directly supported technical design or decision for this precise case: An imported route is absent from a secondary table after activating a RIB group. the best answer here is: Use a correctly scoped RIB group when eligible routes must be copied into multiple routing tables.
Question 35
A provider network team identifies this situation: An imported route is absent from a secondary table after activating a RIB group. Which implementation or troubleshooting step is MOST APPROPRIATE here? Choose ONE best answer.
- Clarify the need for separate encryption when confidentiality is required
- Inspect group assignments and applicable import policy
- Inspect route detail for next-hop resolution before editing preference
- Inspect the hidden route reason and applicable policy decision
Explanation
Correct Answer
B:Inspect group assignments and applicable import policy is the best implementation and troubleshooting step for this Junos service-provider case: An imported route is absent from a secondary table after activating a RIB group. Technical basis: A RIB group controls the tables in which selected routes are installed but does not itself create an L3 forwarding neighbor.
Incorrect Answers
A:That option concerns GRE encapsulation purpose. A RIB group controls the tables in which selected routes are installed but does not itself create an L3 forwarding neighbor.
C:Inspect route detail for next-hop resolution before editing preference is relevant to the different engineering topic "Static-route next-hop resolution", but it is not the most directly supported implementation and troubleshooting step for this precise case: An imported route is absent from a secondary table after activating a RIB group. the best answer here is: Inspect group assignments and applicable import policy.
D:Inspect the hidden route reason and applicable policy decision is relevant to the different engineering topic "Active-route versus hidden-route triage", but it is not the most directly supported implementation and troubleshooting step for this precise case: An imported route is absent from a secondary table after activating a RIB group. the best answer here is: Inspect group assignments and applicable import policy.
Question 36
A provider network team identifies this situation: An imported route is absent from a secondary table after activating a RIB group. What verification evidence MOST CLEARLY demonstrates the solution is working? Choose ONE best answer.
- The selected route has a resolved next hop and a matching forwarding entry
- The absence of contributors explains why the summary is inactive
- The route is copied only to the tables selected by the group and policy
- Normal eligible transit paths resume once the overload condition clears
Explanation
Correct Answer
C:The route is copied only to the tables selected by the group and policy is the best operational verification evidence for this Junos service-provider case: An imported route is absent from a secondary table after activating a RIB group. Technical basis: A RIB group controls the tables in which selected routes are installed but does not itself create an L3 forwarding neighbor.
Incorrect Answers
A:The selected route has a resolved next hop and a matching forwarding entry is relevant to the different engineering topic "Static-route next-hop resolution", but it is not the most directly supported operational verification evidence for this precise case: An imported route is absent from a secondary table after activating a RIB group. the best answer here is: The route is copied only to the tables selected by the group and policy.
B:That option concerns Aggregate-route contributor activation. A RIB group controls the tables in which selected routes are installed but does not itself create an L3 forwarding neighbor.
D:That option concerns IS-IS overload bit maintenance. A RIB group controls the tables in which selected routes are installed but does not itself create an L3 forwarding neighbor.
Question 37
A Junos service-provider engineer is reviewing this operational case: Two service-provider customers use overlapping RFC1918 prefixes. Which technical approach MOST DIRECTLY addresses the issue? Select ONE best answer.
- Assign stable distinct OSPF router identifiers across the participating topology
- Examine route detail and policy reasons when a valid-looking Junos route is hidden or inactive
- Use qualified next hops to express different preference on alternate paths without inventing a universal equal-cost choice
- Choose the correct Junos routing instance and interface membership to keep customer reachability independent
Explanation
Correct Answer
D:Choose the correct Junos routing instance and interface membership to keep customer reachability independent is the best technical design or decision for this Junos service-provider case: Two service-provider customers use overlapping RFC1918 prefixes. Technical basis: Routing instances separate control-plane route tables and forwarding contexts according to their type and interface assignment.
Incorrect Answers
A:That option concerns OSPF router-ID uniqueness. Routing instances separate control-plane route tables and forwarding contexts according to their type and interface assignment.
B:That option concerns Active-route versus hidden-route triage. Routing instances separate control-plane route tables and forwarding contexts according to their type and interface assignment.
C:That option concerns Qualified-next-hop selection. Routing instances separate control-plane route tables and forwarding contexts according to their type and interface assignment.
Question 38
A Junos service-provider engineer is reviewing this operational case: Two service-provider customers use overlapping RFC1918 prefixes. What specific configuration or diagnostic action BEST implements the intended response? Select ONE best answer.
- Place relevant interfaces and route processing into separate configured instances
- Build a precise match and a supported routing-instance action with a safe fall-through
- Inspect the static next hop and replace it with a reachable adjacent address
- Enable supported NSR with required HA prerequisites
Explanation
Correct Answer
A:Place relevant interfaces and route processing into separate configured instances is the best implementation and troubleshooting step for this Junos service-provider case: Two service-provider customers use overlapping RFC1918 prefixes. Technical basis: Routing instances separate control-plane route tables and forwarding contexts according to their type and interface assignment.
Incorrect Answers
B:Build a precise match and a supported routing-instance action with a safe fall-through is relevant to the different engineering topic "Filter-based forwarding", but it is not the most directly supported implementation and troubleshooting step for this precise case: Two service-provider customers use overlapping RFC1918 prefixes. the best answer here is: Place relevant interfaces and route processing into separate configured instances.
C:Inspect the static next hop and replace it with a reachable adjacent address is relevant to the different engineering topic "Static-route next-hop resolution", but it is not the most directly supported implementation and troubleshooting step for this precise case: Two service-provider customers use overlapping RFC1918 prefixes. the best answer here is: Place relevant interfaces and route processing into separate configured instances.
D:That option concerns Nonstop active routing NSR. Routing instances separate control-plane route tables and forwarding contexts according to their type and interface assignment.
Question 39
A Junos service-provider engineer is reviewing this operational case: Two service-provider customers use overlapping RFC1918 prefixes. Which observation would MOST RELIABLY verify the intended outcome? Select ONE best answer.
- The summary is active and external advertisements reflect valid customer reachability
- Each customer's route is present in its intended table without unintended leakage
- The invalid route remains excluded or a reviewed exception is clearly scoped
- The established LSP follows the intended allowed nodes
Explanation
Correct Answer
B:Each customer's route is present in its intended table without unintended leakage is the best operational verification evidence for this Junos service-provider case: Two service-provider customers use overlapping RFC1918 prefixes. Technical basis: Routing instances separate control-plane route tables and forwarding contexts according to their type and interface assignment.
Incorrect Answers
A:The summary is active and external advertisements reflect valid customer reachability is relevant to the different engineering topic "Aggregate-route contributor activation", but it is not the most directly supported operational verification evidence for this precise case: Two service-provider customers use overlapping RFC1918 prefixes. the best answer here is: Each customer's route is present in its intended table without unintended leakage.
C:The invalid route remains excluded or a reviewed exception is clearly scoped 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: Two service-provider customers use overlapping RFC1918 prefixes. the best answer here is: Each customer's route is present in its intended table without unintended leakage.
D:That option concerns RSVP explicit-route constraints. Routing instances separate control-plane route tables and forwarding contexts according to their type and interface assignment.
Question 40
A provider network team identifies this situation: A customer interface forwards using master routing while its peer routes are in a dedicated instance. Which engineering decision BEST fits the stated requirement? Choose ONE best answer.
- Create an aggregate route only when relevant contributing more-specific active routes justify the summary
- Choose the correct Junos routing instance and interface membership to keep customer reachability independent
- Use generated routes when a synthesized route should depend on contributing route information under policy
- Test both overlay reachability and underlay encapsulated packet delivery during troubleshooting
Explanation
Correct Answer
B:Choose the correct Junos routing instance and interface membership to keep customer reachability independent is the best technical design or decision for this Junos service-provider case: A customer interface forwards using master routing while its peer routes are in a dedicated instance. Technical basis: Routing instances separate control-plane route tables and forwarding contexts according to their type and interface assignment.
Incorrect Answers
A:Create an aggregate route only when relevant contributing more-specific active routes justify the summary is relevant to the different engineering topic "Aggregate-route contributor activation", but it is not the most directly supported technical design or decision for this precise case: A customer interface forwards using master routing while its peer routes are in a dedicated instance. the best answer here is: Choose the correct Junos routing instance and interface membership to keep customer reachability independent.
C:That option concerns Generated-route dependencies. Routing instances separate control-plane route tables and forwarding contexts according to their type and interface assignment.
D:That option concerns GRE tunnel forwarding tests. Routing instances separate control-plane route tables and forwarding contexts according to their type and interface assignment.