Fast2test는 아주 믿을만하고 서비스 또한 만족스러운 사이트입니다. 만약 JN0-352시험실패 시 우리는 100% 덤프비용 전액환불 해드립니다.그리고 시험을 패스하여도 우리는 일 년 동안 무료업뎃을 제공합니다.
| Section | Objectives |
|---|---|
| Topic 1: Layer 2 Switching Technologies | - VLANs and trunking - Ethernet switching concepts - Spanning Tree Protocol (STP/RSTP/MSTP) |
| Topic 2: Operations and Troubleshooting | - Troubleshooting routing and switching issues - Junos CLI monitoring tools |
| Topic 3: Routing Policy and Filtering | - Policy statements - Route filtering and preference control |
| Topic 4: High Availability | - Redundancy concepts in enterprise networks - VRRP configuration and behavior |
| Topic 5: Network Services | - NAT concepts in Junos - Basic multicast concepts |
| Topic 6: Routing Protocols | - OSPF configuration and troubleshooting - IS-IS overview - BGP fundamentals and policy control |
Fast2test 의 IT전문가들이 자신만의 경험과 끊임없는 노력으로 최고의 Juniper JN0-352학습자료를 작성해 여러분들이Juniper JN0-352시험에서 패스하도록 최선을 다하고 있습니다. 덤프는 최신 시험문제를 커버하고 있어 시험패스율이 높습니다. Juniper JN0-352시험을 보기로 결심한 분은 가장 안전하고 가장 최신인 적중율 100%에 달하는Juniper JN0-352시험대비덤프를 Fast2test에서 받을 수 있습니다.
질문 # 189
Click the Exhibit button. A network has three Juniper Networks EX Series Switches connected together. No changes have been made to the default spanning-tree configuration. Referring to the exhibit, which statement is correct about the root bridge?
정답：D
설명：
Root bridge election is based on comparing each switch's full Bridge Identifier, which combines the bridge priority value with the switch's MAC address, with priority always evaluated first and MAC address serving strictly as a tiebreaker when two or more switches present identical priority values. In this scenario, the network has been left entirely at the default spanning-tree configuration, meaning every switch is operating at the standard IEEE and Junos default bridge priority of 32768; since all three switches share the exact same priority value, the comparison necessarily falls through to the MAC address tiebreak, where the switch with the numerically lowest MAC address wins the election. Comparing the three addresses shown --
00:1a:2b:3c:4d:01, 00:1a:2b:3c:4d:02, and
00:1a:2b:3c:4d:03 -- Switch A's address is the lowest, since only the final octet differs and 01 is less than both 02 and 03, making Switch A the elected root bridge. RSTP uses the identical Bridge ID comparison mechanism as legacy STP for root election, so there is no special 'median MAC address' rule that applies uniquely under RSTP, making that distractor factually invalid regardless of protocol version. The election process also does not require any manual bridge priority configuration to complete; the default priority value is entirely sufficient on its own to allow a deterministic election to occur, since default priorities are still numerically comparable Bridge IDs.
질문 # 190
You have traffic for a video streaming application traversing a GRE tunnel in your network and users are reporting poor performance. Both ends of the tunnel are using the default settings for a gigabit Ethernet interface, but you observe excessive packet drops due to exceeding the MTU.
Which two steps would you take to improve connectivity for this application? (Choose two.)
정답：B,C
설명：
The described symptom -- excessive packet drops specifically attributed to exceeding the MTU on a GRE tunnel carrying full-size video streaming traffic across default-MTU gigabit Ethernet interfaces -- is a direct consequence of the 24 bytes of GRE encapsulation overhead pushing packets that were already at or near the standard 1500-byte Ethernet MTU past the physical interface's transmission limit once the outer GRE and IP headers are added. The most durable fix is to proactively increase the physical member interfaces' MTU beyond the 1500-byte default -- to
1524 bytes or higher -- which provides sufficient headroom to absorb the full GRE encapsulation overhead without ever causing the fully encapsulated packet to exceed the interface's transmission capability, allowing full-size 1500-byte payloads to pass through the tunnel intact and without fragmentation or drops. As a complementary measure, configuring the clear-dont- fragment-bit option on the tunnel or member interfaces instructs Junos to clear the DF (don't fragment) bit on oversized packets rather than dropping them outright when they do exceed the available MTU, allowing the Packet Forwarding Engine to fragment and later reassemble the traffic instead of silently discarding it, which directly addresses the reported packet loss even under transient conditions. Simply raising the MTU only to 1500 bytes fails to account for the 24- byte GRE overhead and would not resolve the underlying oversize condition. Routing the tunnel over a higher-bandwidth link addresses potential congestion but does nothing to correct an MTU- based packet-size violation, which is the root cause explicitly identified in this scenario.
질문 # 191
What is the management IP address of the device shown in the exhibit?
정답：B
설명：
The management IP address of the device shown in the exhibit is indicated by the interface
"me0." In the provided output, the "me0" interface is listed with the IP address 10.210.20.233.
질문 # 192
Which IS-IS TLV should be used to advertise information about the router's neighbors and link metrics?
정답：B
설명：
TLV 22, the Extended IS Reachability TLV defined in RFC 5305, is the modern and Junos- preferred mechanism for advertising a router's adjacent neighbors together with the metric associated with each link. It carries the seven-octet system ID and pseudonode number of each neighbor along with a 24-bit wide metric field, and supports an extensible set of sub-TLVs used for traffic-engineering data such as interface and neighbor IP addresses, bandwidth, and administrative groups. The original IS Reachability TLV, TLV 2, defined in the base ISO 10589 standard, carries similar neighbor and metric information but is constrained to a 6-bit narrow metric with a maximum value of 63, which is inadequate for expressing meaningful cost differentiation in modern, high-capacity enterprise and service-provider topologies; consequently, Junos deployments are commonly configured for wide-metrics-only, favoring TLV 22 over the legacy TLV 2 whenever traffic-engineering-capable or simply more granular metric representation is desired. TLV 132, the IP Interface Address TLV, only advertises the IPv4 addresses configured on the originating router's interfaces and carries no neighbor- adjacency or metric information.
TLV 129, the Protocols Supported TLV, merely lists which network- layer protocols (such as IPv4 or IPv6) the originating router is capable of routing, and likewise has nothing to do with neighbor reachability or link cost.
질문 # 193
What is the maximum allowable MTU size for a default GRE tunnel without IPv4 traffic fragmentation?
정답：D
설명：
The maximum allowable MTU size for a default GRE tunnel without IPv4 traffic fragmentation is
1476 bytes. This is because GRE packets are formed by the addition of the original packets and the required GRE headers. These headers are 24-bytes in length and since these headers are added to the original frame, depending on the original size of the packet we may run into IP MTU problems. The most common IP MTU is 1500-bytes in length (Ethernet). When the tunnel is created, it deducts the 24-bytes it needs to encapsulate the passenger protocols and that is the IP MTU it will use. For example, if we are forming a tunnel over FastEthernet (IP MTU 1500) the IOS calculates the IP MTU on the tunnel as: 1500-bytes from Ethernet-24-bytes for the GRE encapsulation = 1476-Bytes.
질문 # 194
......
다른 방식으로 같은 목적을 이룰 수 있다는 점 아세요? 여러분께서는 어떤 방식, 어느 길을 선택하시겠습니까? 많은 분들은Juniper인증JN0-352시험패스로 자기 일에서 생활에서 한층 업그레이드 되기를 바랍니다. 하지만 모두 다 알고계시는그대로Juniper인증JN0-352시험은 간단하게 패스할 수 있는 시험이 아닙니다. 많은 분들이Juniper인증JN0-352시험을 위하여 많은 시간과 정신력을 투자하고 있습니다. 하지만 성공하는 분들은 적습니다.
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