Juniper JN0-364인기자격증시험덤프 & JN0-364합격보장가능공부자료

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JN0-364합격보장 가능 공부자료, JN0-364시험대비 최신버전 자료

KoreaDumps에는 IT인증시험의 최신Juniper JN0-364학습가이드가 있습니다. KoreaDumps 는 여러분들이Juniper JN0-364시험에서 패스하도록 도와드립니다. Juniper JN0-364시험준비시간이 충분하지 않은 분은 덤프로 철저한 시험대비해보세요. 문제도 많지 않고 깔끔하게 문제와 답만으로 되어있어 가장 빠른 시간내에Juniper JN0-364시험합격할수 있습니다.

최신 JNCIS-SP JN0-364 무료샘플문제 (Q61-Q66):

질문 # 61
How are routing loops prevented in internal BGP networks?

정답：A

설명：
In iBGP, routes learned from one internal BGP neighbor are not advertised to other internal BGP neighbors. This rule prevents routing loops within the autonomous system and is the reason a full mesh or route reflection is required for proper route propagation in iBGP networks.


질문 # 62
Exhibit:

Referring to the exhibit, R1 and R2 are advertising the same prefix 203.0.113.0/24 to R3 and R4 over EBGP. R3 and R4 both advertise this prefix to R5. Which advertisement does R5 choose to install in its routing table?

정답：C

설명：
In a Juniper Networks environment, when a router receives multiple BGP paths for the same destination prefix, it utilizes theBGP Path Selection Algorithmto determine the single "best" path to install in the routing table and advertise to other peers. This selection process follows a strict hierarchy of attributes.
According to Juniper Networks technical documentation, the very first attribute evaluated by the BGP process (after ensuring the next hop is reachable) is theLocal Preference. Local preference is a well-known discretionary attribute used to communicate a preference for a specific exit point from the local Autonomous System (AS). A higher local preference value is always preferred over a lower one.
Analyzing the exhibit:
* R3receives the prefix from R1 and applies an export policy to its IBGP session that sets thelocal preference to 150.
* R4receives the same prefix from R2 and applies an export policy to its IBGP session that sets thelocal preference to 200.
* R5receives both of these IBGP updates from R3 and R4.
When R5 runs the best-path algorithm for the 203.0.113.0/24 prefix, it compares the local preference values.
Since the path from R4 has a local preference of 200 and the path from R3 has a local preference of 150, R5 immediately selects the path fromR4as the best route. Because BGP is designed to prevent loops and maintain a consistent view, only this single best path is installed as the active route in R5's routing table (inet.0).
Options B and D are incorrect because they imply multiple paths are installed for forwarding, which only occurs if specific multipath load-balancing is configured, which is not indicated here.


질문 # 63
Click the Exhibit button.

Referring to the exhibit, R1 and R2 are advertising the same prefix 203.0.113.0/24 to R3 and R4 over EBGP. R3 and R4 both advertise this prefix to R5.
Which advertisement does R5 choose to install in its routing table?

정답：A

설명：
R3 and R4 both advertise the same prefix into iBGP toward R5, but they assign different local preference values. R3 sets a local preference of 150, while R4 sets a local preference of 200.
Since BGP selects routes with the highest local preference before considering other attributes, R5 chooses the route received from R4 and installs it in its routing table.


질문 # 64
By default, which MPLS operation is performed by the penultimate router in an LSP on the transport label?

정답：D

설명：
In a Multiprotocol Label Switching (MPLS) environment, label operations are categorized into three primary actions:Push(adding a label),Swap(replacing a label), andPop(removing a label). The specific behavior described in the question refers to a mechanism calledPenultimate Hop Popping (PHP).
According to Juniper Networks technical documentation, the goal of PHP is to improve forwarding efficiency at the egress point of a Label-Switched Path (LSP). TheEgress Label Edge Router (LER), which is the final destination for the LSP, would normally have to perform two lookups if it received a labeled packet: first, it would look up the label in its MPLS table to see it is the destination, and second, it would look up the underlying IP payload in its IP routing table (inet.0) to forward the packet.
To alleviate this burden, the Egress LER signals a special label value calledImplicit Null (Label 3)to its upstream neighbor (the penultimate router) during the signaling process (RSVP or LDP). When the penultimate routerreceives a packet destined for that egress LER, it sees the instruction to pop the transport label. Consequently, the penultimate router performs aPopoperation, stripping away the outer MPLS label and sending the raw IP packet (or the remaining inner service label) to the Egress LER.
This allows the Egress LER to perform only a single lookup. If the transport label was the only label, the Egress LER simply performs a standard IP lookup. If there is a VPN label remaining, it performs a single MPLS lookup for the VRF. This "default" behavior in Junos OS optimizes the performance of the egress router by offloading the final label removal to the penultimate hop. Note that ifUltimate Hop Popping (UHP) were configured (via the explicit-null command), the penultimate router would perform aSwapto Label 0 instead of a Pop.


질문 # 65
You are asked to configure a new network environment that will be based on IPv6 and use OSPF. In this scenario, which two statements correctly identify configuration task considerations? (Choose two.)

정답：B,D

설명：
When transitioning to an IPv6 environment usingOSPFv3(the version of OSPF designed for IPv6), there are significant architectural differences compared to OSPFv2 (IPv4). According to Juniper Networks technical documentation, OSPFv3 was redesigned to be more protocol-agnostic.
Router ID (Option C):
Despite OSPFv3 routing IPv6 (which uses 128-bit addresses), the OSPFRouter IDremains a32-bit value formatted like an IPv4 address (e.g., 1.1.1.1). This is a common point of confusion. In a pure IPv6 environment where no IPv4 addresses are configured on any interfaces, a Juniper router cannot automatically derive a Router ID. Therefore, the administrator must manually configure a 32-bit Router ID under [edit routing-options] for the OSPFv3 process to initialize.
Interface Configuration (Option D):
OSPFv3 runs directly over the IPv6 link-local scope. Unlike OSPFv2, it does not require an IPv4 address to function. Therefore, interfaces areonly required to be configured with family inet6(Option D). You do not need "dual-stack" (both IPv4 and IPv6) functionality just to run OSPFv3. The protocol uses the link-local address (fe80::/10) of the interface for neighbor adjacencies and as the next hop for routing updates. This separation allows OSPFv3 to carry multiple "address families" (both IPv4 and IPv6 unicast) if needed, but the base requirement for an IPv6-only network is simply the family inet6 configuration.


질문 # 66
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