Juniper Networks Certified Professional Enterprise Routing and Switching (JNCIP-ENT)

Here you have the best Juniper JN0-643 practice exam questions

You have 217 total questions to study from
Each page has 5 questions, making a total of 44 pages
You can navigate through the pages using the buttons at the bottom
This questions were last updated on October 17, 2025
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Question 1 of 217

Which connection method do OSPF routers use to communicate with each other?

IP protocol number 89

TCP port 179

UDP port 179

IP protocol number 6

Correct Answer: A

Question 2 of 217

Which CoS feature avoids congestion in a device by limiting traffic on ingress interfaces?

rewrite rule

scheduler

drop profile

policer

Correct Answer: A

Question 3 of 217

-- Exhibit
Exam JN0-643: Question 3 - Image 1

-- Exhibit --
Click the Exhibit button.

Which statement is true about the IPv6 network shown in the exhibit?

OSPFv2 must be configured to route IPv4 prefixes.

Areas 1 and 2 cannot be a stub or NSSA.

OSPFv3 can use MD5 authentication.

OSPFv3 can route IPv4 prefixes.

Correct Answer: D

Question 4 of 217

-- Exhibit
Exam JN0-643: Question 4 - Image 1

-- Exhibit --
Click the Exhibit button.

Referring to the exhibit, what is the shortest path from R6 to R5?

R6, R4, R2, R1, R3, R5

R6, R4, R2, R3, R5

R6, R4, R5

R6, R5

Correct Answer: D

Question 5 of 217

R1 and R2 are ASBRs in the same area, each with an equal cost external path to the same external network prefix. R1 advertises an external route into OSPF with a Type 1 metric. R2 advertises an external route into OSPF with a Type 2 metric.

Which route would be preferred?

R1's route is preferred because Type 1 metrics take into account the external cost only.

R1's route is preferred because Type 1 metrics take into account the internal and external cost.

R2's route is preferred because Type 2 metrics take into account the internal and external cost.

R2's route is preferred because Type 2 metrics take into account the external cost only.

Correct Answer: D