Updated Free Juniper JN0-664 Test Engine Questions with 99 Q&As [Q47-Q61]

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Updated Free Juniper JN0-664 Test Engine Questions with 99 Q&As

The Best JNCIP-SP JN0-664 Professional Exam Questions

The JN0-664 exam covers a range of topics related to Juniper Networks service provider technologies, including routing, switching, network protocols, and security. JN0-664 exam is designed to test the candidate’s ability to configure and troubleshoot Juniper Networks equipment in a service provider environment and to demonstrate their understanding of key concepts and best practices.

To pass the Juniper JN0-664 exam, candidates must demonstrate their ability to configure and troubleshoot Juniper Networks’ service provider routing and switching technologies, including the Junos OS, BGP, OSPF, IS-IS, MPLS, Layer 2 VPNs, Layer 3 VPNs, and multicast. Candidates must also be able to analyze network traffic and performance, and identify and resolve issues related to security, QoS, and network services. With the Juniper JN0-664 certification, IT professionals can demonstrate their expertise in service provider networking and advance their careers in this field.

NEW QUESTION 47
Exhibit

CE-1 and CE-2 are part of a VPLS called Customer1 No connectivity exists between CE-1 and CE-2. In the process of troubleshooting, you notice PE-1 is not learning any routes for this VPLS from PE-2, and PE-2 is not learning any routes for this VPLS from PE-1.

The route target must match on PE-1 and PE-2.

The route distinguisher must match on PE-1 and PE-2.

The instance type should be changed to I2vpn.

The no-tunnel-services statement should be deleted on both PEs.

NEW QUESTION 48
Which two statements are true about the OSPF adjacency displayed in the exhibit? (Choose two.)

There is a mismatch in the hello Interval parameter between routers R1 and R2.

There is a mismatch in the OSPF hold timer parameter between routers R1 and R2.

There is a mismatch in the dead interval parameter between routers R1 and R2.

There is a mismatch in the poll interval parameter between routers R1 and R2.

NEW QUESTION 49

Click the Exhibit button.
Referring to the exhibit, you must provide VRF Internet access over a single connection for VPN-A Site 1, which connects to PE-1.
Which two statements are correct in this scenario? (Choose two.)

You must use the RIB group to move a default route, which is learned through BGP, from the inet. o table to the VPN-A. inet. 0 table.

You do not need to use the RIB group to move interface routes from the inet. o table to the VPN-A. inet.
0 table.

You do not need to use the RIB group default route, which is learned through BGP, from the inet. o table to the VPN-A. inet. 0 table.

You must use the RIB group to move interface routes from the inet . 0 table to the VPN-A. inet. 0 table.

In the provided exhibit, the configuration involves using a RIB (Routing Information Base) group to facilitate internet access for VPN-A Site 1 through PE-1. The goal is to provide VRF Internet access over a single connection.
1. **Understanding RIB Groups**:
– RIB groups allow for the import and export of routes between different routing tables.
– In this scenario, we have two RIBs: `inet.0` (the main routing table) and `VPN-A.inet.0` (the VRF-specific routing table).
2. **Statement Analysis**:
– **A. You must use the RIB group to move a default route, which is learned through BGP, from the inet.0 table to the VPN-A.inet.0 table.**
– Correct. To provide Internet access to VPN-A, the default route (0.0.0.0/0) learned via BGP in the `inet.0` table must be made available in the `VPN-A.inet.0` table. This is done using the RIB group to import the default route.
– **B. You do not need to use the RIB group to move interface routes from the inet.0 table to the VPN-A.inet.0 table.**
– Correct. Interface routes (connected routes) are typically directly added to both the global and the VRF routing tables without needing a RIB group. These routes are known to the VRF because the interfaces are part of the VRF configuration.
– **C. You do not need to use the RIB group default route, which is learned through BGP, from the inet.0 table to the VPN-A.inet.0 table.**
– Incorrect. As discussed, the default route needs to be imported into the VRF’s routing table using a RIB group to enable Internet access for the VRF.
– **D. You must use the RIB group to move interface routes from the inet.0 table to the VPN-A.inet.0 table.**
– Incorrect. Interface routes are directly associated with the VRF interfaces and are automatically known to the VRF routing table. There is no need to use a RIB group for these routes.
**Conclusion**:
The correct answers are:
**A. You must use the RIB group to move a default route, which is learned through BGP, from the inet.0 table to the VPN-A.inet.0 table.**
**B. You do not need to use the RIB group to move interface routes from the inet.0 table to the VPN-A.inet.0 table.**
**References**:
– Juniper Networks Documentation on RIB Groups: [RIB Groups
Overview](https://www.juniper.net/documentation/en_US/junos/topics/concept/rib-groups-overview.html)
– Junos OS VPNs Configuration Guide: [Junos VPNs
Configuration](https://www.juniper.net/documentation/en_US/junos/topics/concept/vpns-overview.html)

NEW QUESTION 50
You are running a service provider network and must transport a customer’s IPv6 traffic across your IPv4-based MPLS network using BGP. You have already configured mpls ipv6-tunneling on your PE routers.

Which two statements are correct about the BGP configuration in this scenario? (Choose two.)

You must configure family inet6 labeled-unicast between PE routers.

You must configure family inet6 add-path between PE and CE routers.

You must configure family inet6 unicast between PE and CE routers.

You must configure family inet6 unicast between PE routers.

NEW QUESTION 51
By default, which statement is correct about OSPF summary LSAs?

The metric associated with a summary route will be equal to the lowest metric associated with an individual contributing route.

The area-range command must be installed on all routers.

Type 3 LSAs are advertised for routes in Type 1 LSAs.

All Type 2 and Type 7 LSAs will be summarized into a single Type 5 LSA.

NEW QUESTION 52
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)

It identifies MAC addresses that should be discarded.

It resolves conflicting MAC address ownership claims.

It helps the local PE to identify the latest advertisement.

It is advertised using a Type 2 message

NEW QUESTION 53
You want to ensure that L1 IS-IS routers have only the most specific routes available from L2 IS-IS routers.
Which action accomplishes this task?

Configure the ignore-attached-bit parameter on all L2 routers.

Configure all routers to allow wide metrics.

Configure all routers to be L1.

Configure the ignore-attached-bit parameter on all L1 routers

NEW QUESTION 54
When using OSPFv3 for an IPv4 environment, which statement is correct?

OSPFv3 only supports IPv4.

OSPFv3 supports both IPv6 and IPv4, but not in the same routing instance.

OSPFv3 is not backward compatible with IPv4

OSPFv3 supports IPv4 only on interfaces with family inet6 defined

NEW QUESTION 55
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.)

Configure the BGP group with the advertise-peer-as parameter on R1 and R4.

Configure the BGP group with the as-override parameter on R2 and R3

Configure the BGP group with the advertise-peer-as parameter on R2 and R3.

Configure the BGP group with the as-override parameter on R1 and R4

NEW QUESTION 56
Exhibit

Referring to the exhibit, CE-1 is providing NAT services for the hosts at Site 1 and you must provide Internet access for those hosts Which two statements are correct in this scenario? (Choose two.)

You must configure a static route in the main routing instance for the 10 1 2.0/24 prefix that uses the VPN-A.inet.0 table as the next hop

You must configure a static route in the main routing instance for the 203.0.113.1/32 prefix that uses the VPN-A.inet.0 table as the next hop.

You must configure a RIB group on PE-1 to leak a default route from the inet.0 table to the VPN-A.inet.0 table.

You must configure a RIB group on PE-1 to leak the 10 1 2.0/24 prefix from the VPN-A.inet.0 table to the inet.0 table.

NEW QUESTION 57
Which two statements about IS-IS are correct? (Choose two.)

PSNPs are used to acknowledge a received LSP.

CSNPs are used to acknowledge a received LSP.

CSNPs are used to request a missing LSP.

PSNPs are used to request a missing LSP.

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.**
**References**:
– 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 58
Exhibit

Referring to the exhibit, what do the brackets [ ] in the AS path identify?

They identify the local AS number associated with the AS path if configured on the router, or if AS path prepending is configured

They identify an AS set, which are groups of AS numbers in which the order does not matter

They identify that the autonomous system number is incomplete and awaiting more information from the BGP protocol.

They identify that a BGP confederation is being used to ensure that there are no routing loops.

NEW QUESTION 59
Which two statements are correct about VPLS tunnels? (Choose two.)

BGP-signaled VPLS tunnels require manual provisioning of sites.

LDP-signaled VPLS tunnels only support control bit 0.

LDP-signaled VPLS tunnels use auto-discovery to provision sites.

BGP-signaled VPLS tunnels can use either RSVP or LDP between the PE routers.

NEW QUESTION 60
You are configuring schedulers to define the class-of-service properties of output queues. You want to control packet drops during periods of congestion.
In this scenario, which CoS configuration parameter would be used to accomplish this task?

buffer size

priority

shaping rate

drop profile

NEW QUESTION 61
Exhibit

Referring to the exhibit, which two statements are correct about the dual route reflectors within a cluster? (Choose two.)

RR1 and RR2 must have the same duster ID to exchange routes learned from the client.

RR1 and RR2 append the duster ID when advertising routes from dient to dient.

RR1 and RR2 advertise routes learned from the clients to EBGP peers, using itself as the next hop.

RR1 advertises routes from the client to RR2. using itself as the next hop.

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Updated Free Juniper JN0-664 Test Engine Questions with 99 Q&As [Q47-Q61]

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