JNCIP-SP JN0-664 Exam Dumps and Certification Test Engine [Q31-Q52]

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(PDF) JNCIP-SP JN0-664 Exam and Certification Test Engine

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The JNCIP-SP certification is highly regarded in the industry, and it is recognized as a validation of a professional’s ability to design, implement, and troubleshoot complex service provider networks. Certified professionals can demonstrate their expertise in service provider technologies and are well-positioned to take on roles such as network engineer, network architect, and network operations manager.

NO.31 Which statement is correct about IS-IS when it performs the Dijkstra algorithm?

The local router moves its own local tuples into the candidate database

When a new neighbor ID in the tree database matches a router ID in the LSDB, the neighbor ID is moved to the candidate database

Tuples with the lowest cost are moved from the tree database to the LSDB.

The algorithm will stop processing once the tree database is empty.

NO.32 Which two statements about IS-IS are correct? (Choose two.)

PSNPs are flooded periodically.

PSNPs contain only descriptions of LSPs.

CSNPs are flooded periodically

CSNPs contain only descriptions of LSPs.

NO.33 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.)

Remove the from protocol bgp command from the export policy.

Add the set protocols bgp family inet unicast add-path command to allow additional routes to the RIB tables. –

Add the set routing-options static route 203.0.113.123/25 discard command.

Replace exact in the export policy with orlonger.

NO.34 You are a network architect for a service provider and want to offer Layer 2 services to your customers You want to use EVPN for Layer 2 services in your existing MPLS network.
Which two statements are correct in this scenario? (Choose two.)

Segment routing must be configured on all PE routers.

VXLAN must be configured on all PE routers.

EVPN uses Type 2 routes to advertise MAC address and IP address pairs learned using ARP snooping

EVPN uses Type 3 routes to join a multicast tree to flood traffic.

NO.35 After a recent power outage, your manager asks you to investigate ways to automatically reduce the impact caused by suboptimal routing in your OSPF and OSPFv3 network after devices reboot.
Which three configuration statements accomplish this task? (Choose three.)

set protocols ospf overload timeout 900

set protocols ospf3 realm ipv4-unicast overload timeout 900

set protocols ospf overload

set protocols oapf3 overload timeout 900

set protocols ospf3 overload

NO.36 You are responding to an RFP for a new MPLS VPN implementation. The solution must use LDP for signaling and support Layer 2 connectivity without using BGP The solution must be scalable and support multiple VPN connections over a single MPLS LSP The customer wants to maintain all routing for their Private network In this scenario, which solution do you propose?

circuit cross-connect

BGP Layer 2 VPN

LDP Layer 2 circuit

translational cross-connect

NO.37 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

NO.38 Which two statements are correct regarding bootstrap messages that are forwarded within a PIM sparse mode domain? (Choose two.)

Bootstrap messages are forwarded only to routers that explicitly requested the messages within the PIM sparse-mode domain

Bootstrap messages distribute RP information dynamically during an RP election.

Bootstrap messages are used to notify which router is the PIM RP

Bootstrap messages are forwarded to all routers within a PIM sparse-mode domain.

NO.39 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

NO.40 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

NO.41 Exhibit

You want to use both links between R1 and R2 Because of the bandwidth difference between the two links, you must ensure that the links are used as much as possible.
Which action will accomplish this goal?

Define a policy to tag routes with the appropriate bandwidth community.

Disable multipath.

Ensure that the metric-out parameter on the Gigabit Ethernet interface is higher than the 10 Gigibit Ethernet interface.

Enable per-prefix load balancing.

NO.42 Exhibit.

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

Change the level l disable parameter under the R1 protocols isis interface lo0.0 hierarchy to the level 2 disable parameter.

Remove the level i disable parameter under the R2 protocols isis interface loo . 0 configuration hierarchy.

Change the level 1 disable parameter under the R2 protocols isis interface ge-1/2/3 .0 hierarchy to the level 2 disable parameter

Add IP addresses to the interface ge-l/2/3 unit 0 family iso hierarchy on both R1 and R2.

NO.43 Exhibit

A network designer would like to create a summary route as shown in the exhibit, but the configuration is not working.
Which three configuration changes will create a summary route? (Choose three.)

set policy-options policy-statement leak-v6 term DC-routes then reject

delete policy-options policy-statement leak-v6 term DC-routes from route-filter 2001: db9 :a: fa00 : :/6l longer

set policy-options policy-statement leak-v6 term DC-routes from route-filter 2001:db9:a:faOO::/61 exact

delete protocols isis export summary-v6

set protocols isis import summary-v6

NO.44 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.)

By default, the next-hop value for these routes is not changed by ISP-A before being sent to R3.

The BGP local-preference value that is used by ISP-A is not advertised to R3.

All BGP attribute values must be removed before receiving the routes.

The next-hop value for these routes is changed by ISP-A before being sent to R3.

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/support/docs/ip/border-gateway-protocol-bgp/13753-25.html :
https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/13762-40.html :
https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/13759-37.html

NO.45 Exhibit

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 dead 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 poll interval parameter between routers R1 and R2.

NO.46 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.

NO.47 Which origin code is preferred by BGP?

Internal

External

Incomplete

Null

NO.48 Exhibit

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

This VPN connects customer sites that use different AS numbers.

This VPN connects customer sites that use the same AS number

A Layer 2 VPN is configured.

A Layer 3 VPN is configured.

NO.49 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

NO.50 Which two statements are correct about a sham link? (Choose two.)

It creates an OSPF multihop neighborship between two PE routers.

It creates a BGP multihop neighborship between two PE routers.

The PEs exchange Type 1 OSPF LSAs instead of Type 3 OSPF LSAs for the L3VPN routes

The PEs exchange Type 3 OSPF LSAs instead of Type 1 OSPF LSAs for the L3VPN routes.

NO.51 Exhibit

Referring to the exhibit, which statement is true?

The 10.101.1.0/24 route will be shared if the vrf-table-label parameter is configured.

The 10.101.1.0/24 route will only be shared if BGP is configured in the routing instance

The 10.101.1 0/24 route will be shared if there are other VRFs that use the same route target community

The 10.101.1.0/24 route will be shared if the auto-export parameter is configured

NO.52 Exhibit

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

The PE is attached to a single local site.

The connection has not flapped since it was initiated.

There has been a VLAN ID mismatch.

The PE router has the capability to pop flow labels

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.

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