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The JN0-664 certification exam is intended for individuals who have a solid understanding of networking technologies and who have experience working with Juniper Networks service provider routing and switching technologies. Candidates who pass the JN0-664 Certification Exam will have demonstrated their ability to plan, implement, and troubleshoot complex routing and switching scenarios in service provider environments.

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To prepare for the Juniper JN0-664 Certification Exam, candidates can take advantage of a variety of study materials, including official Juniper Networks training courses, self-study guides, and online resources. Juniper Networks offers a range of training courses that cover all of the topics included in the JNCIP-SP certification exam. Candidates can also find a wealth of online resources, including forums, blogs, and community groups, where they can ask questions and get support from other professionals in the industry.

Juniper Service Provider, Professional (JNCIP-SP) Sample Questions (Q67-Q72):

NEW QUESTION # 67
Exhibit

The environment is using BGP All devices are in the same AS with reachability redundancy Referring to the exhibit, which statement is correct?

A. RR1 is peered to Client2 and RR2
B. Peering is dynamically discovered between all devices.
C. RR2 is in an OpenConfirm State until RR1 becomes unreachable.
D. Client1 is peered to Client2 and Client3.

Answer: A

Explanation:
BGP route reflectors are BGP routers that are allowed to ignore the IBGP loop avoidance rule and advertise IBGP learned routes to other IBGP peers under specific conditions. BGP route reflectors can reduce the number of IBGP sessions and updates in a network by eliminating the need for a full mesh of IBGP peers.
BGP route reflectors can have three types of peerings:
EBGP neighbor: A BGP router that belongs to a different autonomous system (AS) than the route reflector.
IBGP client neighbor: An IBGP router that receives reflected routes from the route reflector. A client does not need to peer with other clients or non-clients.
IBGP non-client neighbor: An IBGP router that does not receive reflected routes from the route reflector. A non-client needs to peer with other non-clients and the route reflector.
In the exhibit, we can see that RR1 and RR2 are route reflectors in the same AS with reachability redundancy.
They have two types of peerings: EBGP neighbors (R1 and R4) and IBGP client neighbors (Client1, Client2, and Client3). RR1 and RR2 are also peered with each other as IBGP non-client neighbors.

NEW QUESTION # 68
Exhibit

Which two statements about the output shown in the exhibit are correct? (Choose two.)

A. The PE is attached to a single local site.
B. The PE router has the capability to pop flow labels
C. There has been a VLAN ID mismatch.
D. The connection has not flapped since it was initiated.

Answer: A,D

Explanation:
The output is from the show l2vpn connections command on a Juniper router. This command is used to verify the status of Layer 2 VPN (L2VPN) pseudowires between Provider Edge (PE) routers.
Breakdown of Key Information:
Instance: vpn-A
This is the L2VPN instance being monitored.
Connection Status (St)
The connection status is "Up", meaning the pseudowire is operational.
Local Site: CE1-2 (2)
The PE router is attached to a single local site (CE1-2).
Uptime & Connection Flaps
The output shows the last time the connection was up:
Time last up: Apr 11 14:35:27 2020
The "# Up trans" value is 1, meaning this connection has been established once and has not flapped since it was initiated.
VLAN ID Mismatch Check
The legend includes "VM - VLAN ID mismatch", but this status is not present in the connection output.
This means there is NO VLAN ID mismatch.
Flow Labels
The Flow Label Transmit is No, and the Flow Label Receive is No.
This means the PE router does NOT have the capability to pop flow labels.

NEW QUESTION # 69
Exhibit

A network designer would like to create a summary route as shown in the exhibit, but the configuration is not working.
Which three configuration changes will create a summary route? (Choose three.)

A. set protocols isis import summary-v6
B. set policy-options policy-statement leak-v6 term DC-routes then reject
C. delete protocols isis export summary-v6
D. delete policy-options policy-statement leak-v6 term DC-routes from route-filter 2001: db9 :a: fa00 : :/6l longer
E. set policy-options policy-statement leak-v6 term DC-routes from route-filter 2001:db9:a:faOO::/61 exact

Answer: C,D,E

Explanation:
To create a summary route for IS-IS, you need to configure a policy statement that matches the prefixes to be summarized and sets the next-hop to discard. You also need to configure a summary-address statement under the IS-IS protocol hierarchy that references the policy statement. In this case, the policy statement leak-v6 is trying to match the prefix 2001:db9:a:fa00::/61 exactly, but this prefix is not advertised by any router in the network. Therefore, no summary route is created. To fix this, you need to delete the longer keyword from the route-filter term and change the prefix length to /61 exact. This will match any prefix that falls within the /61 range. You also need to delete the export statement under protocols isis, because this will export all routes that match the policy statement to other IS-IS routers, which is not desired for a summary route.

NEW QUESTION # 70
Exhibit

You want to use both links between R1 and R2 Because of the bandwidth difference between the two links, you must ensure that the links are used as much as possible.
Which action will accomplish this goal?

A. Define a policy to tag routes with the appropriate bandwidth community.
B. Enable per-prefix load balancing.
C. Ensure that the metric-out parameter on the Gigabit Ethernet interface is higher than the 10 Gigibit Ethernet interface.
D. Disable multipath.

Answer: B

Explanation:
Explanation
VPLS is a Layer 2 VPN technology that allows multiple sites to connect over a shared IP/MPLS network as if they were on the same LAN. VPLS tunnels can be signaled using either Label Distribution Protocol (LDP) or Border Gateway Protocol (BGP). In this question, we have two links between R1 and R2 with different bandwidths (10 Gbps and 1 Gbps). We want to use both links as much as possible for VPLS traffic. To achieve this, we need to enable per-prefix load balancing on both routers. Per-prefix load balancing is a feature that allows a router to distribute traffic across multiple equal-cost or unequal-cost paths based on the destination prefix of each packet. This improves the utilization of multiple links and provides better load sharing than per-flow load balancing, which distributes traffic based on a hash of source and destination addresses4. Per-prefix load balancing can be enabled globally or per interface using the load-balance per-packet command.

NEW QUESTION # 71
Exhibit

You are troubleshooting the connection between AS 64496 and AS 64497 and notice that only one of the paths is being used for traffic forwarding.
Referring to the exhibit, which three actions will ensure that R1 is configured properly for load balancing BGP routes? (Choose three.)

A. Verify that the multipath option is configured under protocols bgp on both R2 and R3.
B. Verify that an import load balancing policy exists under protocols bgp for the received BGP routes on R1.
C. Verify that the routing table on R1 has BGP routes for 203.0.113.128/25 with multiple next hops.
D. Verify that there is a load balancing export policy under routing-options for the received BGP routes on R1.
E. Verify that the multipath option is configured under protocols bgp on R1.

Answer: A,C,E

NEW QUESTION # 72
......

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