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Exam Code: JN0-650

Exam Name: Enterprise Routing and Switching, Professional (JNCIP-ENT)

Certification Provider: Juniper

Corresponding Certification: JNCIP-ENT

Questions & Answers

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Juniper JN0-650 Practice Test 10

Question 90

A Junos network engineer takes this step: Create a Junos policy matching the selected static route and apply it as OSPF export. Which outcome most directly follows?

  1. Only accepted static route candidates are eligible for external OSPF advertisement.
  2. The policy begins controlling the applicable OSPF route exchange direction.
  3. Advertising external reachability can be limited to the enumerated prefixes.
  4. The rejected prefix can be stopped before policy evaluation reaches the general acceptance rule.

Explanation

Correct Answer

A:

This is the direct result of the Static OSPF export decision: Only accepted static route candidates are eligible for external OSPF advertisement.

Incorrect Answers

B:

This outcome is associated with OSPF policy attachment (Reference the policy from the intended OSPF export or import hierarchy according to its purpose.), not the specified action.

C:

This outcome is associated with OSPF selective redistribution (Use precise route-filter terms with accept and an explicit default reject in the OSPF export policy.), not the specified action.

D:

This outcome is associated with Policy term evaluation (Move the specific reject policy term before the broad accept term.), not the specified action.

Question 91

A Junos edge router has a static route that must appear in OSPF but is not redistributed by default. A colleague instead suggests: Move the specific reject policy term before the broad accept term. Which corrective approach most directly addresses the original issue?

  1. Reference the policy from the intended OSPF export or import hierarchy according to its purpose.
  2. Create a Junos policy matching the selected static route and apply it as OSPF export.
  3. Use precise route-filter terms with accept and an explicit default reject in the OSPF export policy.
  4. Move the specific reject policy term before the broad accept term.

Explanation

Correct Answer

B:

This corrective choice addresses Static OSPF export. Only accepted static route candidates are eligible for external OSPF advertisement.

Incorrect Answers

A:

That alternative applies to OSPF policy attachment instead. The policy begins controlling the applicable OSPF route exchange direction.

C:

That alternative applies to OSPF selective redistribution instead. Advertising external reachability can be limited to the enumerated prefixes.

D:

That alternative applies to Policy term evaluation instead. The rejected prefix can be stopped before policy evaluation reaches the general acceptance rule.

Question 92

An enterprise network designer recommends: Create a Junos policy matching the selected static route and apply it as OSPF export. Which situation most clearly calls for this action?

  1. A named Junos policy-statement correctly matches a route but its effects are absent because it was never attached to any OSPF process.
  2. Only two approved static application networks, not every static network, may be redistributed into enterprise OSPF.
  3. A Junos edge router has a static route that must appear in OSPF but is not redistributed by default.
  4. A Junos routing policy has a broad accept term before a more specific deny term, so an unwanted route matches the first term.

Explanation

Correct Answer

C:

This case requires the Static OSPF export action. Only accepted static route candidates are eligible for external OSPF advertisement.

Incorrect Answers

A:

This other case would be better matched to Reference the policy from the intended OSPF export or import hierarchy according to its purpose. The policy begins controlling the applicable OSPF route exchange direction.

B:

This other case would be better matched to Use precise route-filter terms with accept and an explicit default reject in the OSPF export policy. Advertising external reachability can be limited to the enumerated prefixes.

D:

This other case would be better matched to Move the specific reject policy term before the broad accept term. The rejected prefix can be stopped before policy evaluation reaches the general acceptance rule.

Question 93

A network must prevent an unwanted OSPF external prefix from entering one Junos routing table without altering its originating LSA flood. Which Junos networking action or protocol decision best addresses this requirement?

  1. Reference the policy from the intended OSPF export or import hierarchy according to its purpose.
  2. Use precise route-filter terms with accept and an explicit default reject in the OSPF export policy.
  3. Inspect routing-table active-route preference and competing protocol entries.
  4. Apply an OSPF import policy that rejects the unwanted external route for local installation.

Explanation

Correct Answer

D:

This action addresses OSPF external import restriction. Local external route installation can be suppressed while the link-state database remains unchanged.

Incorrect Answers

A:

That action targets OSPF policy attachment: The policy begins controlling the applicable OSPF route exchange direction. It does not directly resolve the stated OSPF external import restriction requirement.

B:

That action targets OSPF selective redistribution: Advertising external reachability can be limited to the enumerated prefixes. It does not directly resolve the stated OSPF external import restriction requirement.

C:

That action targets OSPF route visibility troubleshooting: The engineer can distinguish protocol topology learning from forwarding-route selection by preference. It does not directly resolve the stated OSPF external import restriction requirement.

Question 94

A Junos network engineer takes this step: Apply an OSPF import policy that rejects the unwanted external route for local installation. Which outcome most directly follows?

  1. Local external route installation can be suppressed while the link-state database remains unchanged.
  2. Advertising external reachability can be limited to the enumerated prefixes.
  3. The engineer can distinguish protocol topology learning from forwarding-route selection by preference.
  4. The policy begins controlling the applicable OSPF route exchange direction.

Explanation

Correct Answer

A:

This is the direct result of the OSPF external import restriction decision: Local external route installation can be suppressed while the link-state database remains unchanged.

Incorrect Answers

B:

This outcome is associated with OSPF selective redistribution (Use precise route-filter terms with accept and an explicit default reject in the OSPF export policy.), not the specified action.

C:

This outcome is associated with OSPF route visibility troubleshooting (Inspect routing-table active-route preference and competing protocol entries.), not the specified action.

D:

This outcome is associated with OSPF policy attachment (Reference the policy from the intended OSPF export or import hierarchy according to its purpose.), not the specified action.

Question 95

A network must prevent an unwanted OSPF external prefix from entering one Junos routing table without altering its originating LSA flood. A colleague instead suggests: Use precise route-filter terms with accept and an explicit default reject in the OSPF export policy. Which corrective approach most directly addresses the original issue?

  1. Use precise route-filter terms with accept and an explicit default reject in the OSPF export policy.
  2. Apply an OSPF import policy that rejects the unwanted external route for local installation.
  3. Inspect routing-table active-route preference and competing protocol entries.
  4. Reference the policy from the intended OSPF export or import hierarchy according to its purpose.

Explanation

Correct Answer

B:

This corrective choice addresses OSPF external import restriction. Local external route installation can be suppressed while the link-state database remains unchanged.

Incorrect Answers

A:

That alternative applies to OSPF selective redistribution instead. Advertising external reachability can be limited to the enumerated prefixes.

C:

That alternative applies to OSPF route visibility troubleshooting instead. The engineer can distinguish protocol topology learning from forwarding-route selection by preference.

D:

That alternative applies to OSPF policy attachment instead. The policy begins controlling the applicable OSPF route exchange direction.

Question 96

An enterprise network designer recommends: Apply an OSPF import policy that rejects the unwanted external route for local installation. Which situation most clearly calls for this action?

  1. A named Junos policy-statement correctly matches a route but its effects are absent because it was never attached to any OSPF process.
  2. Only two approved static application networks, not every static network, may be redistributed into enterprise OSPF.
  3. A network must prevent an unwanted OSPF external prefix from entering one Junos routing table without altering its originating LSA flood.
  4. An OSPF LSA for a destination is present, but the installed prefix uses a static route instead.

Explanation

Correct Answer

C:

This case requires the OSPF external import restriction action. Local external route installation can be suppressed while the link-state database remains unchanged.

Incorrect Answers

A:

This other case would be better matched to Reference the policy from the intended OSPF export or import hierarchy according to its purpose. The policy begins controlling the applicable OSPF route exchange direction.

B:

This other case would be better matched to Use precise route-filter terms with accept and an explicit default reject in the OSPF export policy. Advertising external reachability can be limited to the enumerated prefixes.

D:

This other case would be better matched to Inspect routing-table active-route preference and competing protocol entries. The engineer can distinguish protocol topology learning from forwarding-route selection by preference.

Question 97

A Junos routing policy has a broad accept term before a more specific deny term, so an unwanted route matches the first term. Which Junos networking action or protocol decision best addresses this requirement?

  1. Move the specific reject policy term before the broad accept term.
  2. Reference the policy from the intended OSPF export or import hierarchy according to its purpose.
  3. Inspect routing-table active-route preference and competing protocol entries.
  4. Create a Junos policy matching the selected static route and apply it as OSPF export.

Explanation

Correct Answer

A:

This action addresses Policy term evaluation. The rejected prefix can be stopped before policy evaluation reaches the general acceptance rule.

Incorrect Answers

B:

That action targets OSPF policy attachment: The policy begins controlling the applicable OSPF route exchange direction. It does not directly resolve the stated Policy term evaluation requirement.

C:

That action targets OSPF route visibility troubleshooting: The engineer can distinguish protocol topology learning from forwarding-route selection by preference. It does not directly resolve the stated Policy term evaluation requirement.

D:

That action targets Static OSPF export: Only accepted static route candidates are eligible for external OSPF advertisement. It does not directly resolve the stated Policy term evaluation requirement.

Question 98

A Junos network engineer takes this step: Move the specific reject policy term before the broad accept term. Which outcome most directly follows?

  1. The policy begins controlling the applicable OSPF route exchange direction.
  2. The rejected prefix can be stopped before policy evaluation reaches the general acceptance rule.
  3. Only accepted static route candidates are eligible for external OSPF advertisement.
  4. The engineer can distinguish protocol topology learning from forwarding-route selection by preference.

Explanation

Correct Answer

B:

This is the direct result of the Policy term evaluation decision: The rejected prefix can be stopped before policy evaluation reaches the general acceptance rule.

Incorrect Answers

A:

This outcome is associated with OSPF policy attachment (Reference the policy from the intended OSPF export or import hierarchy according to its purpose.), not the specified action.

C:

This outcome is associated with Static OSPF export (Create a Junos policy matching the selected static route and apply it as OSPF export.), not the specified action.

D:

This outcome is associated with OSPF route visibility troubleshooting (Inspect routing-table active-route preference and competing protocol entries.), not the specified action.

Question 99

A Junos routing policy has a broad accept term before a more specific deny term, so an unwanted route matches the first term. A colleague instead suggests: Reference the policy from the intended OSPF export or import hierarchy according to its purpose. Which corrective approach most directly addresses the original issue?

  1. Inspect routing-table active-route preference and competing protocol entries.
  2. Reference the policy from the intended OSPF export or import hierarchy according to its purpose.
  3. Move the specific reject policy term before the broad accept term.
  4. Create a Junos policy matching the selected static route and apply it as OSPF export.

Explanation

Correct Answer

C:

This corrective choice addresses Policy term evaluation. The rejected prefix can be stopped before policy evaluation reaches the general acceptance rule.

Incorrect Answers

A:

That alternative applies to OSPF route visibility troubleshooting instead. The engineer can distinguish protocol topology learning from forwarding-route selection by preference.

B:

That alternative applies to OSPF policy attachment instead. The policy begins controlling the applicable OSPF route exchange direction.

D:

That alternative applies to Static OSPF export instead. Only accepted static route candidates are eligible for external OSPF advertisement.

Question 100

An enterprise network designer recommends: Move the specific reject policy term before the broad accept term. Which situation most clearly calls for this action?

  1. An OSPF LSA for a destination is present, but the installed prefix uses a static route instead.
  2. A named Junos policy-statement correctly matches a route but its effects are absent because it was never attached to any OSPF process.
  3. A Junos edge router has a static route that must appear in OSPF but is not redistributed by default.
  4. A Junos routing policy has a broad accept term before a more specific deny term, so an unwanted route matches the first term.

Explanation

Correct Answer

D:

This case requires the Policy term evaluation action. The rejected prefix can be stopped before policy evaluation reaches the general acceptance rule.

Incorrect Answers

A:

This other case would be better matched to Inspect routing-table active-route preference and competing protocol entries. The engineer can distinguish protocol topology learning from forwarding-route selection by preference.

B:

This other case would be better matched to Reference the policy from the intended OSPF export or import hierarchy according to its purpose. The policy begins controlling the applicable OSPF route exchange direction.

C:

This other case would be better matched to Create a Junos policy matching the selected static route and apply it as OSPF export. Only accepted static route candidates are eligible for external OSPF advertisement.

Enterprise Routing and Switching, Professional (JNCIP-ENT) (JN0-650) Practice Tests