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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.

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Juniper Service Provider, Professional (JNCIP-SP) Sample Questions (Q40-Q45):

NEW QUESTION # 40
You are configuring a BGP signaled Layer 2 VPN across your MPLS enabled core network. In this scenario, which statement is correct?

A. This type of VPN requires the support of the inet-vpn NLRI on all core BGP devices
B. This type of VPN only supports Ethernet interfaces when connecting to CE devices.
C. You must assign a unique site number to each attached site's configuration.
D. You must use the same route-distinguiaher value on both PE devices.

Answer: C

NEW QUESTION # 41
Which three mechanisms are used by Junos platforms to evaluate incoming traffic for CoS purposes? (Choose three )

A. multifield classifiers
B. behavior aggregate classifiers
C. fixed classifiers
D. rewrite rules
E. traffic shapers

Answer: A,B,C

Explanation:
Explanation
Junos platforms use different mechanisms to evaluate incoming traffic for CoS purposes, such as:
* Behavior aggregate classifiers: These classifiers use a single field in a packet header to classify traffic into different forwarding classes and loss priorities based on predefined or user-defined values.
* Fixed classifiers: These classifiers use a fixed field in a packet header to classify traffic into different forwarding classes and loss priorities based on predefined values.
* Multifield classifiers: These classifiers use multiple fields in a packet header to classify traffic into different forwarding classes and loss priorities based on user-defined values and filters.
Rewrite rules and traffic shapers are not used to evaluate incoming traffic for CoS purposes, but rather to modify or shape outgoing traffic based on CoS policies.

NEW QUESTION # 42
What is the correct order of packet flow through configurable components in the Junos OS CoS features?

A. Behavior Aggregate Classifier -> Input Policer -> Multifield Classifier -> Forwarding Policy Options
-> Fabric Scheduler -> Output Policer -> Scheduler/Shaper/RED -> Rewrite Marker
B. Behavior Aggregate Classifier -> Multifield Classifier -> Input Policer -> Forwarding Policy Options
-> Fabric Scheduler -> Scheduler/Shaper/RED -> Output Policer -> Rewrite Marker
C. Behavior Aggregate Classifier -> Multifield Classifier -> Input Policer -> Forwarding Policy Options
-> Fabric Scheduler -> Output Policer -> Scheduler/Shaper/RED -> Rewrite Marker
D. Multifield Classifier -> Behavior Aggregate Classifier -> Input Policer -> Forwarding Policy Options
-> Fabric Scheduler -> Output Policer -> Rewrite Marker -> Scheduler/Shaper/RED

Answer: C

Explanation:
https://www.juniper.net/documentation/us/en/software/junos/cos/topics/concept/packet-flow-cos- process-cos-config-guide.html

NEW QUESTION # 43
You must alter class-of-service values in packets on the outbound interface of an edge router.
In this scenario, which CoS component allows you to accomplish this task?

A. rewrite rules
B. output policer
C. scheduler
D. forwarding classes

Answer: A

Explanation:
Class of Service (CoS) in networking is used to manage traffic by classifying, scheduling, and sometimes modifying packets to ensure network performance and Quality of Service (QoS). Different CoS components are used to achieve these goals. Let's analyze each option to determine which CoS component allows you to alter class-of-service values on the outbound interface of an edge router.
1. **Output Policer**:
- Policing is used to control the rate of traffic sent to or from a network interface. It can drop or remark traffic that exceeds a certain rate.
- Policing is not typically used to alter CoS values but to enforce traffic limits.
2. **Scheduler**:
- A scheduler is responsible for managing the order in which packets are transmitted out of an interface based on their CoS markings. It can allocate bandwidth and prioritize traffic.
- The scheduler manages how packets are queued and sent but does not alter the CoS values of packets.
3. **Rewrite Rules**:
- Rewrite rules are used to modify the CoS values of packets, such as DSCP (Differentiated Services Code Point) or 802.1p bits, as they exit an interface.
- Rewrite rules can alter the class-of-service values in the packet headers to match the desired policies of the outbound interface.
- Therefore, rewrite rules are the correct component for altering CoS values on an outbound interface.
4. **Forwarding Classes**:
- Forwarding classes are used to categorize packets into different traffic classes within a router for QoS handling.
- They help in defining how packets should be treated by the scheduler but do not directly modify the CoS values.
**Conclusion**:
To alter class-of-service values in packets on the outbound interface of an edge router, the correct CoS component to use is:
**C. rewrite rules**
**References**:
- Juniper Networks Documentation on CoS: [Class of Service
Overview](https://www.juniper.net/documentation/en_US/junos/topics/concept/class-of-service-overview.html)
- Junos OS CoS Configuration Guide: [Rewrite
Rules](https://www.juniper.net/documentation/en_US/junos/topics/topic-map/class-of-service-rewrite-rules.html

NEW QUESTION # 44
Exhibit.

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

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

Answer: C

Explanation:
IS-IS routers can form Level 1 or Level 2 adjacencies depending on their configuration and network topology.
Level 1 routers are intra-area routers that share the same area address with their neighbors. Level 2 routers are inter-area routers that can connect different areas. Level 1-2 routers are both intra-area and inter-area routers that can form adjacencies with any other router.
In the exhibit, R1 and R2 are in different areas (49.0001 and 49.0002), so they cannot form a Level 1 adjacency. However, they can form a Level 2 adjacency if they are both configured as Level 1-2 routers. R1 is already configured as a Level 1-2 router, but R2 is configured as a Level 1 router only, because of the level 1 disable command under the lo0.0 interface. This command disables Level 2 routing on the loopback interface, which is used as the router ID for IS-IS.
Therefore, to establish a Level 1 adjacency between R1 and R2, the level 1 disable command under the R2 protocols isis interface lo0.0 hierarchy must be removed. This will enable Level 2 routing on R2 and allow it to form a Level 2 adjacency with R1.

NEW QUESTION # 45
......

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100% Pass Quiz 2025 Juniper JN0-664: Reliable Service Provider, Professional (JNCIP-SP) Dumps Free Download

Juniper JN0-664 Pass Rate & JN0-664 Valid Dumps Book

Juniper Service Provider, Professional (JNCIP-SP) Sample Questions (Q40-Q45):

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