IT業種が新しい業種で、経済発展を促進するチェーンですから、極めて重要な存在だということを良く知っています。Jpexamの JuniperのJN0-352試験トレーニング資料は高度に認証されたIT領域の専門家の経験と創造を含めているものです。その権威性は言うまでもありません。あなたはJpexamの学習教材を購入した後、私たちは一年間で無料更新サービスを提供することができます。
| Section | Objectives |
|---|---|
| Topic 1: Layer 2 Switching Technologies | - Spanning Tree Protocol (STP/RSTP/MSTP) - VLANs and trunking - Ethernet switching concepts |
| Topic 2: Network Services | - Basic multicast concepts - NAT concepts in Junos |
| Topic 3: Routing Protocols | - BGP fundamentals and policy control - OSPF configuration and troubleshooting - IS-IS overview |
| Topic 4: High Availability | - Redundancy concepts in enterprise networks - VRRP configuration and behavior |
| Topic 5: Routing Policy and Filtering | - Policy statements - Route filtering and preference control |
| Topic 6: Operations and Troubleshooting | - Junos CLI monitoring tools - Troubleshooting routing and switching issues |
認証を取得するのは給料を高める重要なものです。JN0-352試験に参加する人にとって、JN0-352試験を心配する必要がありません。最新の問題集を入手したら、JN0-352試験に順調に合格することができます。この問題集はPDF版、ソフト版とオンライン版を含めています。JN0-352試験のすべての領域を全面的に含めています。
質問 # 10
Which two statements are correct about BGP local preference? (Choose two.)
正解：A、C
解説：
Local preference is a well-known, discretionary BGP path attribute carried exclusively in IBGP UPDATE messages, and Junos assigns every route a local preference value of 100 by default whenever a route is received without an explicit LOCAL_PREF value already attached, or when the attribute has not been otherwise modified through routing policy. This default of 100 becomes the implicit baseline against which any administrator-configured local preference adjustments are compared. Because higher local preference values are always preferred over lower ones during BGP best-path selection -- and this evaluation happens before AS path length, origin, or MED are ever considered -- network engineers commonly use local preference specifically to steer outbound traffic leaving the autonomous system toward a preferred exit peer or upstream provider, by assigning a higher local preference to routes learned from that preferred peer relative to routes learned from alternative peers, making the third statement correct as well. Local preference is explicitly excluded from advertisement to EBGP peers under the BGP specification; it is meaningful only within the boundaries of a single AS and is stripped before a route crosses an AS boundary outward, since a neighboring AS has no reason to trust or honor another organization's internal preference values. A local preference of 0 does not have any special 'drop' semantics in BGP -- it is simply the lowest possible numeric preference value and is treated like any other value during comparison, not as a discard instruction.
質問 # 11
Which two BGP attributes must be supported by all BGP implementations and must be included in every update? (Choose two.)
正解：B、C
解説：
BGP attributes are properties that BGP uses for route advertisement, path selection, and loop prevention. There are four categories of BGP attributes:
Well-known mandatory: Must be recognized by all BGP routers, present in all BGP updates, and passed on to other BGP routers.
Well-known discretionary: Supported by all BGP implementations, and are optionally included in BGP updates.
Optional transitive: May not be supported by all implementations of BGP.
Optional non-transitive: May not be supported by all implementations of BGP. The well-known mandatory attributes must be supported by all BGP implementations and must be included in every update. These include the AS path and next hop attributes.
質問 # 12 
Click the Exhibit button.
Which two statements about the IS-IS output shown in the exhibit are correct? (Choose two.)
正解：A、D
解説：
This detailed adjacency output shows R3 maintaining four separate, fully Up adjacencies, evenly split between the two IS-IS levels. R1 and R2 are both formed at Level 1, confirming that R3 is directly adjacent to exactly two Level 1 neighbors within its local area, which validates that statement. R4 and R5 are both formed at Level 2, and Level 2 adjacencies are, by definition, part of the IS-IS backbone that interconnects areas; a router maintaining any Level 2 adjacency is by that fact participating in and connected to the Level 2 backbone, confirming R3's backbone connectivity as well. Every one of the four listed adjacencies explicitly shows 'Speaks: IP, IPv6' in its detail output, which is Junos's way of indicating that both the IPv4 and IPv6 address families have been successfully negotiated and are active over that circuit; this directly contradicts, rather than supports, the claim that IPv6 is disabled on these neighbors - if IPv6 were disabled, the Speaks field would list only IP. Regarding authentication, the output contains no field, flag, or indication whatsoever referencing authentication configuration or state for the R5 adjacency (or any adjacency); Junos would typically surface authentication-related information separately if it were configured and relevant, and its complete absence here means no basis exists in the exhibit to conclude authentication is required for that specific adjacency. Reference topics: Junos Enterprise Routing - IS-IS, Level 1 and Level 2 Adjacencies and Address Family Negotiation.
質問 # 13
Which two statements describe OSPF DR and BDR behavior? (Choose two.)
正解：C、D
解説：
The Backup Designated Router exists specifically to provide immediate failover redundancy for the Designated Router role on a multi-access broadcast or NBMA segment: the BDR maintains full adjacencies with every other router on the segment concurrently with the DR, precisely so that if the DR ever fails or is withdrawn, the BDR can be promoted directly to DR essentially instantaneously, without needing to wait through a fresh, full DR/BDR election process, and a new BDR election then takes place separately among the remaining DROther routers to fill the now-vacant backup role. This immediate promotion behavior confirms the first statement as correct. The Designated Router's other core responsibility on the segment is originating the Type 2 Network LSA, which describes the multi-access network itself as a pseudonode, listing every router attached to that segment; this LSA type exists specifically to avoid the full-mesh explosion of Router LSA adjacency listings that would otherwise be needed to describe a shared broadcast segment, and only the DR - never the BDR, and never any DROther - is responsible for generating and maintaining this particular LSA under normal, stable conditions, which confirms the third statement while directly ruling out the fourth. There is no such thing as the DR 'electing' an area border router; ABR status is instead a role a router acquires organically by having interfaces in more than one OSPF area, entirely independent of any DR
/BDR election process on any individual segment. Reference topics: Junos Enterprise Routing - OSPF, DR
/BDR Roles and Type 2 Network LSA Origination.
質問 # 14
Refer to Exhibit:
R1 is not responding to ICMP requests sent to the VIP address.
Referring to the exhibit, which command option would you configure on the virtual address to correct this problem?
正解：B
解説：
In this configuration, R1's physical interface address (10.10.10.1) is different from the VRRP virtual IP address (10.100.100.1), meaning R1 is operating as a non-owner VRRP master -- it did not originate the virtual address as one of its own real interface addresses. By default, Junos VRRP masters that do not own the virtual address will forward transit traffic destined through that address but will not process or respond to traffic addressed directly to the VIP itself, such as ICMP echo requests, Telnet, or SSH sessions aimed at 10.100.100.1. This is deliberate default behavior intended to prevent ambiguity about which physical device is answering on behalf of a shared virtual identity. To allow the master to accept and respond to packets whose destination is the virtual address itself, the accept-data statement must be explicitly configured under the vrrp- group hierarchy. Once enabled, the elected master will process locally destined traffic sent to the VIP, resolving exactly the symptom described. The track option is used for interface or route- based priority adjustment to influence mastership, advertise-interval tunes the frequency of VRRP hello advertisements, and no-preempt prevents a higher-priority router from reclaiming mastership once a lower-priority router has taken over -- none of these affect whether the master processes traffic destined to the VIP.
質問 # 15
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JN0-352学習教材は、業界の経験豊富な専門家によって作成されているため、品質と効率を保証できます。 JN0-352学習ガイドの内容は、常に命題法に準拠しています。最良のリファレンスとは言えませんが、あなたを失望させないでしょう。私たちは、試験に合格し、認定資格を取得することに熱心な受験者に最適です。 JN0-352の実際の試験は、証明書を取得するという夢を実現するのに役立ちます。
JN0-352試験問題: https://www.jpexam.com/JN0-352_exam.html