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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.

  1. Check martian address policy before assuming every prefix is eligible to enter the routing table
  2. Advertise intended connected prefixes without forming unwanted OSPF neighbors on customer-facing interfaces
  3. Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active
  4. 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.

  1. Set the intended aggregation bridge priority and inspect root ID
  2. Configure an allowed RIB group with the intended table ordering and policy
  3. Inspect active status, route preferences and forwarding-table installation
  4. 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.

  1. Only matched traffic uses the alternate forwarding context
  2. The invalid route remains excluded or a reviewed exception is clearly scoped
  3. The intended route becomes active and forwarding reaches the neighbor
  4. 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.

  1. Use supported wide IS-IS metrics to reflect link cost and network design at the correct level
  2. Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active
  3. Use a correctly scoped RIB group when eligible routes must be copied into multiple routing tables
  4. 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.

  1. Inspect filter term order, conditions and resulting table lookup
  2. Check IPv4 reachability to tunnel endpoints and tunnel interface state
  3. Inspect contributing route selection and applied generation policy
  4. 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.

  1. Traffic is resolved in the correct customer routing table
  2. The absence of contributors explains why the summary is inactive
  3. The expected tagged VLAN appears on the port and forwarding resumes
  4. 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.

  1. Use NSR for supported control-plane redundancy when preserving routing protocol state during RE switchover matters
  2. Use a correctly scoped RIB group when eligible routes must be copied into multiple routing tables
  3. Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active
  4. 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.

  1. Build a precise match and a supported routing-instance action with a safe fall-through
  2. Set qualified-next-hop preference intentionally and verify both gateway reachabilities
  3. Configure an allowed RIB group with the intended table ordering and policy
  4. 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.

  1. The preferred next hop forwards in normal operation and standby is selected after loss
  2. The intended IPv6 route information is present and eligible for SPF
  3. The advertised default withdraws when the required valid contribution disappears
  4. 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.

  1. Match IS-IS authentication configuration on participating interfaces and levels
  2. Create an aggregate route only when relevant contributing more-specific active routes justify the summary
  3. Use filter-based forwarding on eligible incoming traffic to steer matching packets into the intended routing context
  4. 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.

Service Provider Routing and Switching, Specialist (JNCIS-SP) (JN0-364) Practice Tests