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Juniper JN0-664 (Service Provider, Professional (JNCIP-SP)) Exam is a certification exam designed for networking professionals who want to validate their skills in designing, implementing, and troubleshooting Juniper Networks service provider networks. JN0-664 exam is intended for individuals who have a strong foundation in networking technologies and protocols and have experience working with Juniper Networks devices and software.

The JNCIP-SP exam tests the candidate’s knowledge in various areas such as OSPF, IS-IS, BGP, MPLS, Layer 2 VPNs, Layer 3 VPNs, and multicast. The candidate must have hands-on experience in these areas to pass the exam. JN0-664 Exam is a combination of multiple-choice questions, drag-and-drop questions, and simulation-based questions.

Juniper Service Provider, Professional (JNCIP-SP) Sample Questions (Q65-Q70):

NEW QUESTION # 65
Which two statements are correct about the customer interface in an LDP-signaled pseudowire? (Choose two)

A. When the encapsulation is ethemet-ccc, tagged and untagged frames are both accepted in the data plane.
B. When the encapsulation is vlan-ccc or extended-vlan-ccc, the configured VLAN tag is not included in the control plane LDP advertisement
C. When the encapsulation is ethernet-ccc, only frames without a VLAN tag are accepted in the data plane
D. When the encapsulation is vLan-ccc or extended-vlan-ccc, the configured VLAN tag is included in the control plane LDP advertisement

Answer: A,D

Explanation:
The customer interface in an LDP-signaled pseudowire is the interface on the PE router that connects to the CE device. An LDP-signaled pseudowire is a type of Layer 2 circuit that uses LDP to establish a point-to-point connection between two PE routers over an MPLS network. The customer interface can have different encapsulation types depending on the type of traffic that is carried over the pseudowire. The encapsulation types are ethernet-ccc, vlan-ccc, extended-vlan-ccc, atm-ccc, frame-relay-ccc, ppp-ccc, cisco-hdlc-ccc, and tcc-ccc. Depending on the encapsulation type, the customer interface can accept or reject tagged or untagged frames in the data plane, and include or exclude VLAN tags in the control plane LDP advertisement. The following table summarizes the behavior of different encapsulation types:

NEW QUESTION # 66
You are asked to exchange routes between R1 and R4 as shown in the exhibit. These two routers use the same AS number.
Which two steps will accomplish this task? (Choose two.)

A. Configure the BGP group with the advertise-peer-as parameter on R1 and R4.
B. Configure the BGP group with the as-override parameter on R1 and R4.
C. Configure the BGP group with the as-override parameter on R2 and R3.
D. Configure the BGP group with the advertise-peer-as parameter on R2 and R3.

Answer: C,D

Explanation:
https://www.juniper.net/documentation/us/en/software/junos/routing-
policy/bgp/topics/example/bgp-advertise-peer-as.html
Both advertise-peer-as and as-override are BGP settings applied on the PE, not the CE.

NEW QUESTION # 67
Exhibit

You have MAC addresses moving in your EVPN environment
Referring to the exhibit, which two statements are correct about the sequence number? (Choose two)

A. It resolves conflicting MAC address ownership claims.
B. It identifies MAC addresses that should be discarded.
C. It is advertised using a Type 2 message
D. It helps the local PE to identify the latest advertisement.

Answer: A,D

Explanation:
The sequence number is a field in the MAC mobility extended community that is used to resolve conflicting MAC address ownership claims and to help the local PE to identify the latest advertisement. The sequence number is incremented by one for every MAC address mobility event, such as when a host moves from one Ethernet segment to another segment in the EVPN network. The PE device that receives multiple MAC advertisements for the same MAC address chooses the one with the highest sequence number as the most recent and valid advertisement.

NEW QUESTION # 68
Which two statements about IS-IS are correct? (Choose two.)

A. CSNPs are used to acknowledge a received LSP.
B. CSNPs are used to request a missing LSP.
C. PSNPs are used to request a missing LSP.
D. PSNPs are used to acknowledge a received LSP.

Answer: C,D

Explanation:
Intermediate System to Intermediate System (IS-IS) is a link-state routing protocol used to move information efficiently within a computer network. It uses a series of Protocol Data Units (PDUs) to manage the network's topology and ensure consistency across all routers in the network. Specifically, Link State PDUs (LSPs), Complete Sequence Number PDUs (CSNPs), and Partial Sequence Number PDUs (PSNPs) play crucial roles in this process.
1. **PSNPs (Partial Sequence Number PDUs)**:
- **Acknowledge a received LSP**: PSNPs are used to acknowledge the receipt of LSPs. When a router receives an LSP, it sends a PSNP back to the sender to confirm that the LSP has been received.
- **Request a missing LSP**: PSNPs are also used to request missing LSPs. If a router identifies a missing LSP based on sequence numbers, it can send a PSNP to request the specific LSP from its neighbors.
2. **CSNPs (Complete Sequence Number PDUs)**:
- **Summarize LSPs**: CSNPs are used to summarize all the LSPs known to a router. They are typically sent at regular intervals to provide a complete list of LSPs in a database. They are not used to acknowledge or request specific LSPs but provide an overview of all LSPs for database synchronization.
Based on this understanding, let's evaluate the statements:
- **A. PSNPs are used to acknowledge a received LSP.**
- Correct. PSNPs serve the purpose of acknowledging LSPs received from other routers.
- **B. CSNPs are used to acknowledge a received LSP.**
- Incorrect. CSNPs are not used for acknowledging LSPs; they are used to provide a summary of all LSPs.
- **C. CSNPs are used to request a missing LSP.**
- Incorrect. CSNPs are not used to request missing LSPs; this is the role of PSNPs.
- **D. PSNPs are used to request a missing LSP.**
- Correct. PSNPs are used to request specific missing LSPs when a router detects that it is missing information.
**Conclusion**:
The correct statements about IS-IS are:
**A. PSNPs are used to acknowledge a received LSP.**
**D. PSNPs are used to request a missing LSP.**
**Reference**:
- Juniper Networks Documentation on IS-IS: [IS-IS Overview](https://www.juniper.net/documentation/en_US/junos/topics/concept/is-is-routing-overview.html)
- RFC 1195, Use of OSI IS-IS for Routing in TCP/IP and Dual Environments: [RFC 1195](https://tools.ietf.org/html/rfc1195) which details the operation and use of IS-IS, including the roles of PSNPs and CSNPs.

NEW QUESTION # 69
Exhibit.

Referring to the exhibit, what must be changed to establish a Level 1 adjacency between routers R1 and R2?

A. Change the level l disable parameter under the R1 protocols isis interface lo0.0 hierarchy to the level 2 disable parameter.
B. Remove the level 1 disable parameter under the R2 protocols isis interface lo0.0 configuration hierarchy.
C. Add IP addresses to the interface ge-1/2/3 unit 0 family iso hierarchy on both R1 and R2.
D. Change the level 1 disable parameter under the R2 protocols isis interface ge-l/2/3.0 hierarchy to the level 2 disable parameter.

Answer: D

NEW QUESTION # 70
......

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Valid JN0-664 Exam Questions That Have Been Tried and True

JN0-664 Valid Test Experience & Latest JN0-664 Dumps Questions

Juniper Service Provider, Professional (JNCIP-SP) Sample Questions (Q65-Q70):

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