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Juniper JN0-648

Enterprise Routing and Switching, Professional (JNCIP-ENT)

Verified practice questions with detailed answers, clear explanations, and community discussion.

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Question 1 of 65

Which BGP message type contains NLRI information?

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Correct answer: C

BGP (Border Gateway Protocol) uses the update message type to carry Network Layer Reachability Information (NLRI). This information includes data about the network addresses that the router can reach and the associated path attributes.

Question 2 of 65

Click the Exhibit button.

Exam JN0-648: Question 2 - Image 1

Referring to the exhibit, which two statements are true regarding Q-in-Q tunneling? (Choose two.)

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Correct answers: B, D

Q-in-Q tunneling, or VLAN stacking, allows multiple VLANs to be encapsulated within an outer VLAN tag to pass through a provider network. From the exhibit, the customer port (ge-0/0/1) shows that VLAN IDs 100-200 are to be processed with encapsulation extended-vlan-bridge, allowing these VLANs to be mapped and tagged appropriately. The VLAN map push and pop commands indicate that the inner VLAN tags (customer VLANs) will be encapsulated inside an outer VLAN tag when passing through the network. The uplink port (xe-0/0/48) uses VLAN ID 10, which will serve as the outer VLAN tag. Therefore, the correct statements are: C-VLANs 100-200 will be sent as the inner VLAN tag and the C-VLAN traffic will be encapsulated with an outer VLAN tag of 10.

Question 3 of 65

What is the correct authentication processing order on EX Series switches when multiple Layer 2 authentication methods are enabled?

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Correct answer: B

On EX Series switches, the correct authentication processing order when multiple Layer 2 authentication methods are enabled is 802.1X first, followed by MAC RADIUS, and finally captive portal. The process starts with 802.1X authentication, which provides the highest security. If 802.1X fails or times out, the switch then attempts MAC RADIUS authentication. If both 802.1X and MAC RADIUS authentication methods are not successful, the captive portal is used as the final method.

Question 4 of 65

You are implementing a single spanning tree instance in your network and want to use the protocol that will give you the BEST convergence time in the event of a physical network failure of the root bridge.

Which spanning tree protocol will satisfy this requirement?

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Correct answer: A

Rapid Spanning Tree Protocol (RSTP) is designed to provide faster convergence compared to the original Spanning Tree Protocol (STP) in the event of a topology change such as the failure of the root bridge. RSTP achieves this by introducing new port roles and states, allowing for quicker reconfiguration. Given the requirement of the best convergence time in case of a physical network failure, RSTP is the most suitable protocol.

Question 5 of 65

What are three well-known mandatory BGP attributes? (Choose three.)

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Correct answers: B, C, D

The three well-known mandatory BGP attributes are AS-path, origin, and next-hop. These attributes must be included in every BGP update message. AS-path is a list of Autonomous Systems that routing information has traversed, origin indicates the origin of the path information, and next-hop provides the next hop IP address to reach a network. MED and community are not mandatory attributes; MED is optional non-transitive, and community is optional transitive.

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As this was my first certification exam, I was understandably nervous about what to expect. These study materials made the preparation process much easier, and many of the questions closely reflected those on the actual exam.
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Wasted about a month going through the free dump sites scattered all over reddit, half the answers were wrong and the other half were for a version of the exam that doesn't even exist anymore. Eventually gave in and paid the small fee here, and the difference was night and day.
Alisha Kelly
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Honestly, I had already gone through the official documentation quite thoroughly, but still didn't feel fully confident going in. This helped things finally click for me. I realized I knew the material, but just hadn't connected all the pieces yet.
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Used this along with Microsoft Learn and the combo worked really well. The practice questions made the stuff I'd read actually stick. Passed first attempt, no complaints from me.
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Morgan Farmer
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I don't usually leave reviews, but this one felt worth sharing. The questions were quite close to what actually appeared on the exam, more than I expected. I spent about a week going through the material before my test, and it helped me feel more prepared.
Remi Nuyts
United States
Passed ITIL 4 Foundation with 87%. Material was enough by itself.
Archie Hopkins
United States
I had a smooth experience from start to finish. Access was available right away, no technical issues, which made it easy to get started. The content felt relevant and aligned well with what I was looking for.
Nancy Mcbride
United States
Does what it says it does. Content felt solid, nothing confusing to navigate and I didn't run into any weird issues. I been putting off scheduling the exam for a while and going through this gave me enough confidence to finally book it and pass.
Neil Savage
United States
A very quick response was received via email when a link issue occurred. The study materials provided were high quality and extremely helpful. I was able to complete the test successfully. Many thanks for the excellent support.

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