Juniper JN0-364 Practice Test 1
Question 1
A Junos service-provider engineer is reviewing this operational case: An access PE receives a default route pointing to a retired core gateway. Which technical approach MOST DIRECTLY addresses the issue? Select ONE best answer.
- Check martian address policy before assuming every prefix is eligible to enter the routing table
- Advertise intended connected prefixes without forming unwanted OSPF neighbors on customer-facing interfaces
- Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active
- Create an aggregate route only when relevant contributing more-specific active routes justify the summary
Explanation
Correct Answer
C:Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active is the best technical design or decision for this Junos service-provider case: An access PE receives a default route pointing to a retired core gateway. Technical basis: Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
Incorrect Answers
A:Check martian address policy before assuming every prefix is eligible to enter the routing table is relevant to the different engineering topic "Martian-prefix handling", but it is not the most directly supported technical design or decision for this precise case: An access PE receives a default route pointing to a retired core gateway. the best answer here is: Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active.
B:That option concerns OSPF passive-interface and export policy. Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
D: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: An access PE receives a default route pointing to a retired core gateway. the best answer here is: Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active.
Question 2
A Junos service-provider engineer is reviewing this operational case: An access PE receives a default route pointing to a retired core gateway. What specific configuration or diagnostic action BEST implements the intended response? Select ONE best answer.
- Set the intended aggregation bridge priority and inspect root ID
- Configure an allowed RIB group with the intended table ordering and policy
- Inspect active status, route preferences and forwarding-table installation
- Inspect the static next hop and replace it with a reachable adjacent address
Explanation
Correct Answer
D:Inspect the static next hop and replace it with a reachable adjacent address is the best implementation and troubleshooting step for this Junos service-provider case: An access PE receives a default route pointing to a retired core gateway. Technical basis: Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
Incorrect Answers
A:That option concerns STP root bridge placement. Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
B:Configure an allowed RIB group with the intended table ordering and policy is relevant to the different engineering topic "RIB-group route sharing", but it is not the most directly supported implementation and troubleshooting step for this precise case: An access PE receives a default route pointing to a retired core gateway. the best answer here is: Inspect the static next hop and replace it with a reachable adjacent address.
C:That option concerns Active-route versus hidden-route triage. Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
Question 3
A Junos service-provider engineer is reviewing this operational case: An access PE receives a default route pointing to a retired core gateway. Which observation would MOST RELIABLY verify the intended outcome? Select ONE best answer.
- Only matched traffic uses the alternate forwarding context
- The invalid route remains excluded or a reviewed exception is clearly scoped
- The intended route becomes active and forwarding reaches the neighbor
- Transit traffic avoids it while routing state becomes ready
Explanation
Correct Answer
C:The intended route becomes active and forwarding reaches the neighbor is the best operational verification evidence for this Junos service-provider case: An access PE receives a default route pointing to a retired core gateway. Technical basis: Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
Incorrect Answers
A:Only matched traffic uses the alternate forwarding context is relevant to the different engineering topic "Filter-based forwarding", but it is not the most directly supported operational verification evidence for this precise case: An access PE receives a default route pointing to a retired core gateway. the best answer here is: The intended route becomes active and forwarding reaches the neighbor.
B: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: An access PE receives a default route pointing to a retired core gateway. the best answer here is: The intended route becomes active and forwarding reaches the neighbor.
D:That option concerns IS-IS overload bit maintenance. Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
Question 4
A provider network team identifies this situation: A static route exists in configuration but not in the active forwarding path. Which engineering decision BEST fits the stated requirement? Choose ONE best answer.
- Use supported wide IS-IS metrics to reflect link cost and network design at the correct level
- Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active
- Use a correctly scoped RIB group when eligible routes must be copied into multiple routing tables
- Use qualified next hops to express different preference on alternate paths without inventing a universal equal-cost choice
Explanation
Correct Answer
B:Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active is the best technical design or decision for this Junos service-provider case: A static route exists in configuration but not in the active forwarding path. Technical basis: Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
Incorrect Answers
A:That option concerns IS-IS wide metrics. Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
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 static route exists in configuration but not in the active forwarding path. the best answer here is: Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active.
D:That option concerns Qualified-next-hop selection. Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
Question 5
A provider network team identifies this situation: A static route exists in configuration but not in the active forwarding path. Which implementation or troubleshooting step is MOST APPROPRIATE here? Choose ONE best answer.
- Inspect filter term order, conditions and resulting table lookup
- Check IPv4 reachability to tunnel endpoints and tunnel interface state
- Inspect contributing route selection and applied generation policy
- Inspect route detail for next-hop resolution before editing preference
Explanation
Correct Answer
D:Inspect route detail for next-hop resolution before editing preference is the best implementation and troubleshooting step for this Junos service-provider case: A static route exists in configuration but not in the active forwarding path. Technical basis: Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
Incorrect Answers
A:Inspect filter term order, conditions and resulting table lookup 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: A static route exists in configuration but not in the active forwarding path. the best answer here is: Inspect route detail for next-hop resolution before editing preference.
B:That option concerns IPv6-over-IPv4 tunnel migration. Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
C:That option concerns Generated-route dependencies. Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
Question 6
A provider network team identifies this situation: A static route exists in configuration but not in the active forwarding path. What verification evidence MOST CLEARLY demonstrates the solution is working? Choose ONE best answer.
- Traffic is resolved in the correct customer routing table
- The absence of contributors explains why the summary is inactive
- The expected tagged VLAN appears on the port and forwarding resumes
- The selected route has a resolved next hop and a matching forwarding entry
Explanation
Correct Answer
D:The selected route has a resolved next hop and a matching forwarding entry is the best operational verification evidence for this Junos service-provider case: A static route exists in configuration but not in the active forwarding path. Technical basis: Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
Incorrect Answers
A:That option concerns Routing-instance isolation. Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
B:The absence of contributors explains why the summary is inactive 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: A static route exists in configuration but not in the active forwarding path. the best answer here is: The selected route has a resolved next hop and a matching forwarding entry.
C:That option concerns Trunk tagging and VLAN allowlist. Junos selects active routes only after next-hop resolution, then programs eligible routes into the forwarding table.
Question 7
A Junos service-provider engineer is reviewing this operational case: A dual-homed branch requires primary transit and a standby interconnect. Which technical approach MOST DIRECTLY addresses the issue? Select ONE best answer.
- Use NSR for supported control-plane redundancy when preserving routing protocol state during RE switchover matters
- Use a correctly scoped RIB group when eligible routes must be copied into multiple routing tables
- Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active
- Use qualified next hops to express different preference on alternate paths without inventing a universal equal-cost choice
Explanation
Correct Answer
D:Use qualified next hops to express different preference on alternate paths without inventing a universal equal-cost choice is the best technical design or decision for this Junos service-provider case: A dual-homed branch requires primary transit and a standby interconnect. Technical basis: Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.
Incorrect Answers
A:That option concerns Nonstop active routing NSR. Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.
B: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 dual-homed branch requires primary transit and a standby interconnect. the best answer here is: Use qualified next hops to express different preference on alternate paths without inventing a universal equal-cost choice.
C:Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active is relevant to the different engineering topic "Static-route next-hop resolution", but it is not the most directly supported technical design or decision for this precise case: A dual-homed branch requires primary transit and a standby interconnect. the best answer here is: Use qualified next hops to express different preference on alternate paths without inventing a universal equal-cost choice.
Question 8
A Junos service-provider engineer is reviewing this operational case: A dual-homed branch requires primary transit and a standby interconnect. What specific configuration or diagnostic action BEST implements the intended response? Select ONE best answer.
- Build a precise match and a supported routing-instance action with a safe fall-through
- Set qualified-next-hop preference intentionally and verify both gateway reachabilities
- Configure an allowed RIB group with the intended table ordering and policy
- Inspect database description exchange and relevant mismatch counters
Explanation
Correct Answer
B:Set qualified-next-hop preference intentionally and verify both gateway reachabilities is the best implementation and troubleshooting step for this Junos service-provider case: A dual-homed branch requires primary transit and a standby interconnect. Technical basis: Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.
Incorrect Answers
A: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: A dual-homed branch requires primary transit and a standby interconnect. the best answer here is: Set qualified-next-hop preference intentionally and verify both gateway reachabilities.
C:Configure an allowed RIB group with the intended table ordering and policy is relevant to the different engineering topic "RIB-group route sharing", but it is not the most directly supported implementation and troubleshooting step for this precise case: A dual-homed branch requires primary transit and a standby interconnect. the best answer here is: Set qualified-next-hop preference intentionally and verify both gateway reachabilities.
D:That option concerns OSPF LSDB synchronization. Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.
Question 9
A Junos service-provider engineer is reviewing this operational case: A dual-homed branch requires primary transit and a standby interconnect. Which observation would MOST RELIABLY verify the intended outcome? Select ONE best answer.
- The preferred next hop forwards in normal operation and standby is selected after loss
- The intended IPv6 route information is present and eligible for SPF
- The advertised default withdraws when the required valid contribution disappears
- Only selected eligible routes appear in both target routing tables
Explanation
Correct Answer
A:The preferred next hop forwards in normal operation and standby is selected after loss is the best operational verification evidence for this Junos service-provider case: A dual-homed branch requires primary transit and a standby interconnect. Technical basis: Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.
Incorrect Answers
B:That option concerns IS-IS TLV reachability advertisements. Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.
C:That option concerns Generated-route dependencies. Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.
D:Only selected eligible routes appear in both target routing tables is relevant to the different engineering topic "RIB-group route sharing", but it is not the most directly supported operational verification evidence for this precise case: A dual-homed branch requires primary transit and a standby interconnect. the best answer here is: The preferred next hop forwards in normal operation and standby is selected after loss.
Question 10
A provider network team identifies this situation: An engineer adds a second static next hop but all traffic still takes the first link. Which engineering decision BEST fits the stated requirement? Choose ONE best answer.
- Match IS-IS authentication configuration on participating interfaces and levels
- Create an aggregate route only when relevant contributing more-specific active routes justify the summary
- 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
D:Use qualified next hops to express different preference on alternate paths without inventing a universal equal-cost choice is the best technical design or decision for this Junos service-provider case: An engineer adds a second static next hop but all traffic still takes the first link. Technical basis: Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.
Incorrect Answers
A:That option concerns IS-IS authentication checks. Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.
B:That option concerns Aggregate-route contributor activation. Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.
C: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 engineer adds a second static next hop but all traffic still takes the first link. the best answer here is: Use qualified next hops to express different preference on alternate paths without inventing a universal equal-cost choice.