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To achieve the Juniper JN0-664 certification, candidates must demonstrate a thorough understanding of these topics and be able to apply their knowledge to real-world scenarios. Service Provider, Professional (JNCIP-SP) certification is ideal for network engineers who want to advance their careers in service provider networking and demonstrate their proficiency in Juniper Networks technologies. Service Provider, Professional (JNCIP-SP) certification is also valuable for organizations that employ Juniper Networks technologies and want to ensure that their network engineers have the necessary skills and knowledge to manage and operate their networks effectively.
The JN0-664 Exam covers a wide range of topics, including OSPF, IS-IS, BGP, MPLS, VPNs, and multicast protocols. JN0-664 exam is intended for individuals who have a strong understanding of networking technologies and have experience working with Juniper Networks products. Passing the JN0-664 exam is a significant achievement for networking professionals and is recognized by employers as a valuable credential that demonstrates a high level of expertise in service provider networking.
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The JN0-664 exam is a 120-minute exam consisting of 65 multiple-choice questions. To pass the exam, candidates must achieve a minimum score of 65%. JN0-664 Exam is available in English and Japanese and can be taken at any Pearson VUE testing center around the world. Juniper Service Provider, Professional (JNCIP-SP) Sample Questions (Q29-Q34):NEW QUESTION # 29
Exhibit
Click the Exhibit button-Referring to the exhibit, which two statements are correct about BGP routes on R3 that are learned from the ISP-A neighbor? (Choose two.)
A. The next-hop value for these routes is changed by ISP-A before being sent to R3.
B. By default, the next-hop value for these routes is not changed by ISP-A before being sent to R3.
C. The BGP local-preference value that is used by ISP-A is not advertised to R3.
D. All BGP attribute values must be removed before receiving the routes.
Answer: B,C
Explanation:
Explanation
BGP is an exterior gateway protocol that uses path vector routing to exchange routing information among autonomous systems. BGP uses various attributes to select the best path to each destination and to propagate routing policies. Some of the common BGP attributes are AS path, next hop, local preference, MED, origin, weight, and community. BGP attributes can be classified into four categories: well-known mandatory, well-known discretionary, optional transitive, and optional nontransitive. Well-known mandatory attributes are attributes that must be present in every BGP update message and must be recognized by every BGP speaker.
Well-known discretionary attributes are attributes that may or may not be present in a BGP update message but must be recognized by every BGP speaker. Optional transitive attributes are attributes that may or may not be present in a BGP update message and may or may not be recognized by a BGP speaker. If an optional transitive attribute is not recognized by a BGP speaker, it is passed along to the next BGP speaker. Optional nontransitive attributes are attributes that may or may not be present in a BGP update message and may or may not be recognized by a BGP speaker. If an optional nontransitive attribute is not recognized by a BGP speaker, it is not passed along to the next BGP speaker. In this question, we have four routers (R1, R2, R3, and R4) that are connected in a full mesh topology and running IBGP. R3 receives the 192.168.0.0/16 route from its EBGP neighbor and advertises it to R1 and R4 with different BGP attribute values. We are asked which statements are correct about the BGP routes on R3 that are learned from the ISP-A neighbor. Based on the information given, we can infer that the correct statements are:
* By default, the next-hop value for these routes is not changed by ISP-A before being sent to R3. This is because the default behavior of EBGP is to preserve the next-hop attribute of the routes received from another EBGP neighbor. The next-hop attribute indicates the IP address of the router that should be used as the next hop to reach the destination network.
* The BGP local-preference value that is used by ISP-A is not advertised to R3. This is because the local-preference attribute is a well-known discretionary attribute that is used to influence the outbound traffic from an autonomous system. The local-preference attribute is only propagated within an autonomous system and is not advertised to external neighbors.
References: : https://www.cisco.com/c/en/us/su ... l-bgp/13753-25.html : https://www.cisco.com/c/en/us/su ... l-bgp/13762-40.html : https://www.cisco.com/c/en/us/su ... l-bgp/13759-37.html
NEW QUESTION # 30
Exhibit
You are attempting to summarize routes from the 203.0.113.128/25 IP block on R8 to AS 64500. You implement the export policy shown in the exhibit and all routes from the routing table stop being advertised.
In this scenario, which two steps would you take to summarize the route in BGP? (Choose two.)
A. Add the set protocols bgp family inet unicast add-path command to allow additional routes to the RIB tables. -
B. Add the set routing-options static route 203.0.113.123/25 discard command.
C. Remove the from protocol bgp command from the export policy.
D. Replace exact in the export policy with orlonger.
Answer: B,D
Explanation:
Explanation
To summarize routes from the 203.0.113.128/25 IP block on R8 to AS 64500, you need to do the following:
* Add the set routing-options static route 203.0.113.128/25 discard command. This creates a static route for the summary prefix and discards any traffic destined to it. This is necessary because BGP can only advertise routes that are present in the routing table.
* Replace exact in the export policy with orlonger. This allows R8 to match and advertise any route that is equal or more specific than the summary prefix. The exact term only matches routes that are exactly equal to the summary prefix, which is not present in the routing table.
NEW QUESTION # 31
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 PE is attached to a single local site.
C. The connection has not flapped since it was initiated.
D. There has been a VLAN ID mismatch.
Answer: A,B
Explanation:
Explanation
According to 1 and 2, BGP Layer 2 VPNs use BGP to distribute endpoint provisioning information and set up pseudowires between PE devices. BGP uses the Layer 2 VPN (L2VPN) Routing Information Base (RIB) to store endpoint provisioning information, which is updated each time any Layer 2 virtual forwarding instance (VFI) is configured. The prefix and path information is stored in the L2VPN database, which allows BGP to make decisions about the best path.
In the output shown in the exhibit, we can see some information about the L2VPN RIB and the pseudowire state. Based on this information, we can infer the following statements:
* The PE is attached to a single local site. This is correct because the output shows only one local site ID (1) under the L2VPN RIB section. A local site ID is a unique identifier for a site within a VPLS domain.
If there were multiple local sites attached to the PE, we would see multiple local site IDs with different prefixes.
* The connection has not flapped since it was initiated. This is correct because the output shows that the uptime of the pseudowire is equal to its total uptime (1w6d). This means that the pseudowire has been up for one week and six days without any interruption or flap.
* There has been a VLAN ID mismatch. This is not correct because the output shows that the remote and local VLAN IDs are both 0 under the pseudowire state section. A VLAN ID mismatch occurs when the remote and local VLAN IDs are different, which can cause traffic loss or misdelivery. If there was a VLAN ID mismatch, we would see different values for the remote and local VLAN IDs.
* The PE router has the capability to pop flow labels. This is correct because the output shows that the flow label pop bit is set under the pseudowire state section. The flow label pop bit indicates that the PE router can pop (remove) the MPLS flow label from the packet before forwarding it to the CE device.
The flow label is an optional MPLS label that can be used for load balancing or traffic engineering purposes.
NEW QUESTION # 32
Click the Exhibit button.
You have an OSPF environment. You have recently added a router called R4 that is directly connected to R1 and R2. You discover that R4 is only peering with R2.
Referring to the exhibit, how would you correct the peering?
A. Adjust the Priority on R1 to be lower than the Priority on R4.
B. Adjust the Hello Interval on R1 and R2 to match the Hello Interval on R4.
C. Adjust the Dead Interval on R4 to match the Dead Interval on R1 and R2.
D. Change the MTU size on R1 and R2 to be 22 bytes higher than R4's MTU size.
Answer: B
NEW QUESTION # 33
Your organization manages a Layer 3 VPN for multiple customers. To support advanced route filtering on your PE routers, you must advertise more than one BGP community on advertised VPN routes to remote PE routers.
Which routing-instance configuration parameter would support this requirement?
