JN0-664 reliable test sample – Prepaway Exam Dumps

NEW QUESTION 51
What is the correct order of packet flow through configurable components in the Junos OS CoS features?

Multifield Classifier -> Behavior Aggregate Classifier -> Input Policer -> Forwarding Policy Options -> Fabric Scheduler -> Output Policer -> Rewrite Marker -> Scheduler/Shaper/RED

Behavior Aggregate Classifier -> Multifield Classifier -> Input Policer -> Forwarding Policy Options -> Fabric Scheduler -> Output Policer -> Scheduler/Shaper/RED -> Rewrite Marker

Behavior Aggregate Classifier -> Input Policer -> Multifield Classifier -> Forwarding Policy Options -> Fabric Scheduler -> Output Policer -> Scheduler/Shaper/RED -> Rewrite Marker

Behavior Aggregate Classifier -> Multifield Classifier -> Input Policer -> Forwarding Policy Options -> Fabric Scheduler -> Scheduler/Shaper/RED -> Output Policer -> Rewrite Marker

NEW QUESTION 52
Exhibit

You are examining an L3VPN route that includes the information shown in the exhibit Which statement is correct in this scenario?

The information shows a Type 1 route distinguisher.

The information shows a Type 0 route distinguisher

The information shows a Type 2 route distinguisher.

The information shows a route target

NEW QUESTION 53
Which two EVPN route types are used to advertise a multihomed Ethernet segment? (Choose two )

Type 1

Type 3

Type 4

Type 2

NEW QUESTION 54
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 55
Which statement is true regarding BGP FlowSpec?

It uses a remote triggered black hole to protect a network from a denial-of-service attack.

It uses dynamically created routing policies to protect a network from denial-of-service attacks

It is used to protect a network from denial-of-service attacks dynamically

It verifies that the source IP of the incoming packet has a resolvable route in the routing table

NEW QUESTION 56
Exhibit

Referring to the exhibit, PE-1 and PE-2 are getting route updates for VPN-B when neither of them service that VPN Which two actions would optimize this process? (Choose two.)

Configure the resolution rib bgp.l3vpn.0 resolution-ribs inet.0 statement on the PEs.

Configure the family route-target statement on the RR.

Configure the resolution rib bgp.l3vpn.0 resolution-ribs inet.0 statement on the RR.

Configure the family route-target statement on the PEs.

NEW QUESTION 57
Exhibit

Referring to the exhibit, PIM-SM is configured on all routers, and Anycast-RP with Anycast-PIM is used for the discovery mechanism on RP1 and RP2. The interface metric values are shown for the OSPF area.
In this scenario, which two statements are correct about which RP is used? (Choose two.)

Source2 will use RP2 and Received will use RP2 for group 224.2.2.2.

Source2 will use RP1 and Receiver2 will use RP1 for group 224.2.2.2.

Source1 will use RP1 and Receiver1 will use RP1 for group 224.1.1.1.

Source1 will use RP1 and Receiver1 will use RP2 for group 224.1 1 1

NEW QUESTION 58
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 is advertised using a Type 2 message.

It helps the local PE to identify the latest advertisement.

NEW QUESTION 59
Exhibit

Referring to the exhibit, you must provide Internet access for VPN-A using CE-1 as the hub CE.
Which two statements are correct in this situation? (Choose two.)

You must use RIB groups to leak routes between the inet. o and vpn-a. inet. o tables.

RIB groups are not needed to leak routes between the inet. 0 and VPN-A. inet. 0 tables,

Internet traffic from Site 2 takes the path of PE-2 -> PE-1 -> GW-1.

Internet traffic from Site 2 takes the path of PE-2 -> PE-1 -> CE-1 -> PE-1 -> GW-1.

NEW QUESTION 60
Exhibit

The network shown in the exhibit is based on IS-IS
Which statement is correct in this scenario?

The NSEL byte for Area 0001 is 00.

The area address is two bytes.

The routers are using unnumbered interfaces

The system IDofR1_2 is 192.168.16.1

NEW QUESTION 61

Click the Exhibit button.
Which two statements are correct about the class-of-service configuration shown in the exhibit? (Choose two.)

Incoming traffic will not be classified because no classifier exists in the configuration.

The best-effort queue can transmit more than 40% of the total bandwidth on the ge-0/0/0 interface, if no other queue is using that bandwidth.

Incoming traffic will be classified using the default classifier.

The best-effort queue can never transmit more than 40% of the total bandwidth on the ge-0/0/0 interface, even if that bandwidth is available.

NEW QUESTION 62
You are configuring a Layer 3 VPN between two sites. You are configuring the vrf-target target : 65100:100 statement in your routing instance.
In this scenario, which two statements describe the vrf-target configuration? (Choose two.)

This value is used to identify BGP routes learned from the local CE device.

This value is used to identify BGP routes learned from the remote PE device.

This value is used to add a target community to BGP routes advertised to the local CE device.

This value is used to add a target community to BGP routes advertised to the remote PE device.

The `vrf-target` statement in a Layer 3 VPN configuration is used to control the import and export of VPN routes by attaching a target community to the routes. This helps in defining which VPN routes should be imported into or exported from a particular VRF (Virtual Routing and Forwarding) instance.
1. **Understanding VRF Target**:
– The `vrf-target` statement specifies the extended community attributes (route targets) that are used to control the import and export of routes in a VRF.
– These attributes help in identifying which routes should be shared between different VRFs, particularly across different PE (Provider Edge) devices.
2. **Statements Analysis**:
– **A. This value is used to identify BGP routes learned from the local CE device.**
– Incorrect. The `vrf-target` attribute is not used to identify routes learned from the local CE device. It is used to manage routes between PE devices and within the provider’s MPLS network.
– **B. This value is used to identify BGP routes learned from the remote PE device.**
– Correct. The `vrf-target` value helps in identifying which routes from remote PE devices should be imported into the local VRF. It essentially acts as a filter for importing BGP routes with matching target communities.
– **C. This value is used to add a target community to BGP routes advertised to the local CE device.**
– Incorrect. Routes advertised to the local CE device do not use the `vrf-target` attribute. Instead, these routes are typically managed within the local VRF routing table.
– **D. This value is used to add a target community to BGP routes advertised to the remote PE device.**
– Correct. When advertising routes from the local PE to remote PE devices, the `vrf-target` value is added to these routes. This target community ensures that the correct routes are shared across the VPN.
**Conclusion**:
The correct statements about the `vrf-target` configuration in a Layer 3 VPN scenario are:
**B. This value is used to identify BGP routes learned from the remote PE device.**
**D. This value is used to add a target community to BGP routes advertised to the remote PE device.**
**References**:
– Juniper Networks Documentation on VRF Target: [VRF Target
Configuration](https://www.juniper.net/documentation/en_US/junos/topics/topic-map/layer-3-vpns.html)
– MPLS and VPN Architectures by Ivan Pepelnjak and Jim Guichard

NEW QUESTION 63
Referring to the exhibit. PIM-SM is configured on all routers, and Anycast-RP with Anycast-PIM is used for the discovery mechanism on RP1 and RP2. The interface metric values are shown for the OSPF area.

In this scenario, which two statements are correct about which RP is used? (Choose two.)

Source2 will use RP1 and Receiver2 will use RP1 for group 224.2.2.2.

Source2 will use RP2 and Receiver2 will use RP2 for group 224.2.2.2.

Source1 will use RP1 and Receiver1 will use RP1 for group 224.1.1.1.

Source1 will use RP1 and Receiver1 will use RP2 for group 224.1.1.1.

NEW QUESTION 64
Exhibit

Referring to the exhibit, which three statements are correct about route 10 0 0.0/16 when using the default BGP advertisement rules’? (Choose three.)

R1 will prepend AS 65531 when advertising 10 0.0 0/16 to R2.

R1 will advertise 10.0.0.0/16 to R2 with 192 168 1 1 as the next hop.

R2 will advertise 10.0.0.0/16 to R3 with 192.168.1 1 as the next hop

R4 will advertise 10 0.0 0/16 to R6 with 172.16 1 1 as the next hop

R2 will advertise 10.0.0.0/16 to R4 with 172.16.1.1 as the next hop

NEW QUESTION 65
Exhibit

You want to implement the BGP Generalized TTL Security Mechanism (GTSM) on the network Which three statements are correct in this scenario? (Choose three)

You can implement BGP GTSM between R2, R3, and R4

BGP GTSM requires a firewall filter to discard packets with incorrect TTL.

You can implement BGP GTSM between R2 and R1.

BGP GTSM requires a TTL of 1 to be configured between neighbors.

BGP GTSM requires a TTL of 255 to be configured between neighbors.

NEW QUESTION 66
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?

Adjust the Hello Interval on R1 and R2 to match the Hello Interval on R4.

Change the MTU size on R1 and R2 to be 22 bytes higher than R4’s MTU size.

Adjust the Dead Interval on R4 to match the Dead Interval on R1 and R2.

Adjust the Priority on R1 to be lower than the Priority on R4.

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