JN0-664 RELIABLE EXAM COST, JN0-664 ONLINE LAB SIMULATION

JN0-664 Reliable Exam Cost, JN0-664 Online Lab Simulation

JN0-664 Reliable Exam Cost, JN0-664 Online Lab Simulation

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Tags: JN0-664 Reliable Exam Cost, JN0-664 Online Lab Simulation, Reliable JN0-664 Test Duration, Reliable JN0-664 Exam Labs, JN0-664 Exam Quizzes

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The JNCIP-SP certification is highly regarded in the service provider industry and is recognized globally. Service Provider, Professional (JNCIP-SP) certification validates the candidate's advanced knowledge and skills in service provider routing and switching technologies, making them stand out in the job market. Service Provider, Professional (JNCIP-SP) certification also opens up new career opportunities for professionals in the service provider domain, such as network engineer, network architect, and network operations center (NOC) engineer. Overall, the Juniper JN0-664 certification exam is an excellent way for service provider professionals to demonstrate their skills and advance their careers.

The JN0-664 Exam covers a wide range of topics, including OSPF, IS-IS, BGP, MPLS, Layer 3 VPNs, Layer 2 VPNs, Class of Service, and IP multicast. JN0-664 exam consists of 65 multiple-choice questions that need to be completed within 120 minutes. JN0-664 exam is computer-based, and the passing score is 65%. Candidates who pass the JN0-664 exam will be awarded the Juniper Networks Certified Professional Service Provider (JNCIP-SP) certification.

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Juniper Service Provider, Professional (JNCIP-SP) Sample Questions (Q48-Q53):

NEW QUESTION # 48

Click the Exhibit button.
After adding Customer C to your Layer 3 VPN, you must ensure that PE2 is receiving VPN routes for all customers attached to PE1, as shown in the exhibit.
Which operational command displays this information?

  • A. show route summary
  • B. show route table bgp. 13vpn.0
  • C. show route table customer-c.inet.0
  • D. show route table inet.0

Answer: C

Explanation:
In the context of Layer 3 VPNs (L3VPN) using MPLS, the routing information for different customers (VPNs) is typically stored in separate routing tables (VRFs). When you want to verify that PE2 is receiving the VPN routes for Customer C from PE1, you need to check the appropriate VRF routing table on PE2.
1. **Option A: show route table customer-c.inet.0**
- This command displays the routing table specific to Customer C's VRF.
- Since we want to verify that PE2 has received the VPN routes for Customer C, this is the most appropriate command to use.
- It allows us to see all routes learned for Customer C's VPN.
2. **Option B: show route table bgp.l3vpn.0**
- This command displays the BGP routing table for all L3VPN routes.
- While this includes routes for Customer C, it also includes routes for all other VPNs, making it harder to isolate the specific information for Customer C.
- This command is more useful for an overall view of BGP L3VPN routes rather than for a specific customer's VRF.
3. **Option C: show route summary**
- This command provides a summary of the routes in all routing tables.
- It doesn't give detailed information about the specific routes for Customer C's VRF.
- It's useful for a high-level overview but not for verifying specific customer routes.
4. **Option D: show route table inet.0**
- This command shows the global routing table, not the VRF-specific tables.
- The global routing table doesn't contain the VPN-specific routes that are stored in the VRF tables.
- Therefore, it won't help in verifying the routes for Customer C.
**Conclusion**:
To verify that PE2 is receiving VPN routes for Customer C from PE1, the most appropriate command is to check the specific VRF routing table for Customer C. Hence, the correct answer is:
**A. show route table customer-c.inet.0**
**References**:
- Junos OS documentation on MPLS VPNs: [Junos MPLS VPNs
Guide](https://www.juniper.net/documentation/en_US/junos/topics/topic-map/mpls-vpns.html)
- Command Reference for Routing Tables: [Junos OS Routing Tables Command Reference](https://www.juniper.net/documentation/en_US/junos/topics/reference/command-summary/show-rout


NEW QUESTION # 49
Which three mechanisms are used by Junos platforms to evaluate incoming traffic for CoS purposes? (Choose three )

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

Answer: A,B,E

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 # 50
Exhibit

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

  • A. This VPN connects customer sites that use different AS numbers.
  • B. This VPN connects customer sites that use the same AS number
  • C. A Layer 3 VPN is configured.
  • D. A Layer 2 VPN is configured.

Answer: B,C

Explanation:
The provided configuration is for a routing instance named VPN-A on a Juniper PE (Provider Edge) router. Let's break it down:
Instance Type: VRF
The instance-type vrf; statement indicates that this is a Layer 3 VPN (L3VPN) using MPLS VPNs (RFC 4364 - BGP/MPLS IP VPNs).
This confirms that Option D (A Layer 3 VPN is configured) is correct ✅.
VRF Target and Interface Association
The vrf-target target:64512:1234; defines the route target (RT) for importing and exporting VPN routes.
The interface ge-0/0/1.0; binds this interface to the VRF.
BGP Configuration for CE (Customer Edge) Peering
The group CE section configures external BGP (EBGP) (type external;).
The neighbor 10.0.0.1 is in AS 64512 (peer-as 64512;).
The as-override; statement is used.
Evaluating the Answer Choices
✅ Option B: "This VPN connects customer sites that use the same AS number." The as-override; command allows multiple customer sites that use the same AS number (64512) to communicate over the service provider's MPLS network.
Normally, BGP prevents routes with the same AS in the AS_PATH from being accepted. The as-override feature replaces the customer's AS number with the provider's AS, ensuring proper route advertisement.
✅ This statement is correct.
❌ Option A: "This VPN connects customer sites that use different AS numbers." If the customer sites had different AS numbers, there would be no need for as-override.
The as-override feature is specifically used when all customer sites share the same AS number, ensuring that BGP routes are accepted.
❌ This statement is incorrect.
❌ Option C: "A Layer 2 VPN is configured."
A Layer 2 VPN (L2VPN) configuration would typically use instance-type l2vpn; or EVPN/VPLS-related parameters (e.g., protocols l2vpn or protocols vpls).
Since this configuration uses instance-type vrf; and BGP with a VRF target, it is clearly a Layer 3 VPN (L3VPN).
❌ This statement is incorrect.
✅ Option D: "A Layer 3 VPN is configured."
The instance-type vrf; confirms this is an MPLS Layer 3 VPN (L3VPN).
VRFs, BGP, and route targets (vrf-target) are specific to Layer 3 VPNs.
✅ This statement is correct.
Final answer:
✅ B. This VPN connects customer sites that use the same AS number.
✅ D. A Layer 3 VPN is configured.
Verification from Juniper Documentation:
Juniper BGP/MPLS Layer 3 VPNs Guide confirms that instance-type vrf is used for L3VPNs.
Juniper BGP Configuration Guide states that as-override is applied when customer sites use the same AS number.
RFC 4364 (BGP/MPLS IP VPNs) explains how route targets and VRFs are used in L3VPN deployments.


NEW QUESTION # 51
Exhibit

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

Answer: A,B

Explanation:
Explanation
The advertise-peer-as parameter allows a router to advertise its peer's AS number as part of the AS path attribute when sending BGP updates to other peers. This parameter is useful when two routers in the same AS need to exchange routes through another AS, such as in the case of R1 and R4. By configuring this parameter on R1 and R4, they can advertise each other's AS number to R2 and R3, respectively.
The as-override parameter allows a router to replace the AS number of its peer with its own AS number when receiving BGP updates from that peer. This parameter is useful when two routers in different ASes need to exchange routes through another AS that has the same AS number as one of them, such as in the case of R2 and R3. By configuring this parameter on R2 and R3, they can override the AS number of R1 and R4 with their own AS number when sending BGP updates to each other.


NEW QUESTION # 52
Which two statements are correct about IS-IS interfaces? (Choose two.)

  • A. If a point-to-point interface is in both L1 and L2, one combined hello message is sent for both levels.
  • B. If a broadcast interface is in both L1 and L2, one combined hello message is sent for both levels.
  • C. If a broadcast interface is in both L1 and L2, separate hello messages are sent for each level
  • D. If a point-to-point interface is in both L1 and L2, separate hello messages are sent for each level.

Answer: C,D

Explanation:
IS-IS supports two levels of routing: Level 1 (intra-area) and Level 2 (interarea). An IS-IS router can be either Level 1 only, Level 2 only, or both Level 1 and Level 2. A router that is both Level 1 and Level 2 is called a Level 1-2 router. A Level 1-2 router sends separate hello messages for each level on both point-to-point and broadcast interfaces1. A point-to-point interface provides a connection between a single source and a single destination. A broadcast interface behaves as if the router is connected to a LAN.


NEW QUESTION # 53
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