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Juniper JN0-664 (Service Provider, Professional (JNCIP-SP)) Certification Exam is designed for professionals who want to demonstrate their expertise in advanced routing technologies and services. Service Provider, Professional (JNCIP-SP) certification exam validates the knowledge and skills required to configure, manage, and troubleshoot Juniper Networks' service provider routing platforms and operating systems. JN0-664 Exam covers a broad range of topics, including OSPF, IS-IS, BGP, MPLS, multicast, and Ethernet services.

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Juniper JN0-664 (Service Provider, Professional (JNCIP-SP)) Certification Exam is a professional-level certification exam designed for network engineers and administrators who specialize in service provider networks. JN0-664 Exam validates the skills needed to configure, manage, and troubleshoot Juniper Networks service provider routing platforms and networks.

Juniper Service Provider, Professional (JNCIP-SP) Sample Questions (Q69-Q74):

NEW QUESTION # 69
You have an L2VPN connecting two CEs across a provider network that runs OSPF. You have OSPF configured on both CEs.
Which two statements are correct in this scenario? (Choose two.)

A. OSPF neighborship is formed between the CEs and PEs.
B. The CE and PE OSPF areas must match.
C. OSPF neighborship is formed between the two CEs.
D. The CE and PE OSPF areas can be different.

Answer: C,D

Explanation:
In an L2VPN scenario, the provider network connects two customer edge (CE) devices across a Layer 2 virtual private network. Let's analyze how OSPF operates in this setup.
1. **OSPF Neighborship in L2VPN**:
- An L2VPN provides a Layer 2 connection between two sites, making it transparent to Layer 3 protocols like OSPF. This means the CEs can form OSPF adjacencies directly with each other as if they were on the same local network.
2. **OSPF Configuration on CEs and PEs**:
- **Statement A: OSPF neighborship is formed between the CEs and PEs**:
- Incorrect. In an L2VPN, the provider's network is transparent to the OSPF running on the CEs. OSPF neighborship forms directly between the CEs, not between the CEs and PEs.
- **Statement B: The CE and PE OSPF areas can be different**:
- Correct. Since OSPF adjacencies form directly between the CEs and not between CEs and PEs, the OSPF areas on the CEs and PEs can be different. The provider network acts as a transparent bridge, and OSPF doesn't see the PEs.
- **Statement C: The CE and PE OSPF areas must match**:
- Incorrect. As noted above, because the OSPF neighborship forms directly between the CEs, the OSPF areas on the CEs and PEs do not need to match.
- **Statement D: OSPF neighborship is formed between the two CEs**:
- Correct. The L2VPN makes the connection between the two CEs appear as a direct Layer 2 link, allowing them to form an OSPF adjacency directly.
**Conclusion**:
Given the above analysis, the correct statements are:
**B. The CE and PE OSPF areas can be different.**
**D. OSPF neighborship is formed between the two CEs.**
**References**:
- Juniper Networks Documentation on L2VPNs: [Configuring Layer 2
VPNs](https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/layer-2-vpns-configuring.
- OSPF Configuration Guide: [Junos OS OSPF
Configuration](https://www.juniper.net/documentation/en_US/junos/topics/concept/ospf-routing-overview.html)

NEW QUESTION # 70
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. RR2 is in an OpenConfirm State until RR1 becomes unreachable.
B. RR1 is peered to Client2 and RR2
C. Peering is dynamically discovered between all devices.
D. Client1 is peered to Client2 and Client3.

Answer: B

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 # 71
Exhibit

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

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

Answer: B,C

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 # 72
Which two statements are correct about the class-of-service configuration shown in the exhibit?
(Choose two.)

A. Incoming traffic will be classified using the default classifier.
B. Incoming traffic will not be classified because no classifier exists in the configuration.
C. The best-effort queue can never transmit more than 40% of the total bandwidth on the ge-0/0/0 interface, even if that bandwidth is available.
D. The best-effort queue can transmit more than 40% of the total bandwidth on the ge-0/0/0 interface, if no other queue is using that bandwidth.

Answer: A,D

NEW QUESTION # 73
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 policy-options policy-statement leak-v6 term DC-routes from route-filter 2001: db9 :a: fa00 : :/6l longer
D. delete protocols isis export summary-v6
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 # 74
......

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