Wie weit ist der Anstand zwischen Worten und Taten? Es hängt von der Person ab. Wenn man einen starken Willrn haben, ist Erfolg ganz leicht zu erlangen. Wenn Sie Juniper JN0-364 Zertifizierungsprüfung wählen, sollen Sie die Prüfung bestehen. Die Prüfungsmaterialien zur Juniper JN0-364 Zertifizierungsprüfung von PrüfungFrage ist die optimale Wahl, Ihnen zu helfen, die Prüfung zu bestehen. Die Qualität der Prüfungsmaterialien von PrüfungFrage ist sehr gut. Wenn Sie die Juniper JN0-364 Zertifizierungsprüfung bestehen wollen, wählen Sie doch Lernhilfe von PrüfungFrage.
| Section | Objectives |
|---|---|
| BGP and Routing Policy | - Routing policy control
|
| Service Provider Architecture & Junos Fundamentals | - Junos OS routing fundamentals
|
| MPLS and Service Provider Technologies | - MPLS fundamentals
|
| Troubleshooting and Operations | - Network troubleshooting methodology
|
| OSPF and IS-IS Routing Protocols | - IS-IS operation in service provider networks
|
Wir PrüfungFrage bietet Ihnen die Prüfungsfragen und Antworten zur Juniper JN0-364 von höchster Qualität, damit Sie viel näher von Ihrem Erfolg sind. Wenn Sie noch ein paar Sorgen haben, können Sie die JN0-364 Demo durch die Webseite PrüfungFrage herunterladen. Hier versprechen wir Ihnen, dass wir Ihnen noch einjähriger Aktualisierung kostenlos anbieten werden, nachdem Sie die Prüfungsfragen und Antworten zur Juniper JN0-364 gekauft haben.
124. Frage
What is the default route preference for an aggregate route?
Antwort: A
Begründung:
In the Junos OS architecture,route preference(often referred to as administrative distance in other vendor platforms) is the primary metric used by the Routing Engine to select the "best" path when multiple protocols provide a route to the same destination. Each routing protocol and route type is assigned a default numeric value; the lower the value, the more preferred the route.
According to Juniper Networks technical documentation, anaggregate routeis assigned a default preference of
130. Aggregate routes are a form of static-like route used to group specific routes into a single, broader prefix to reduce the size of routing tables and limit the scope of routing updates. They are "protocol-independent" because they are not learned from a dynamic neighbor but are manually defined by the administrator.
To understand where130fits in the hierarchy, it is helpful to compare it with other common Junos preferences:
* Directly connected interfaces:0
* Static routes:5
* OSPF Internal:10
* IS-IS Level 1/2:15/18
* Aggregate routes: 130
* OSPF AS External:150
* BGP (Internal and External):170
* Generated routes:150
By setting the aggregate route preference to 130, Junos ensures that specific routes learned via IGPs (like OSPF or IS-IS) are preferred over the aggregate. This is essential because an aggregate route is often used as a
"catch-all" or a discard route when more specific path information is missing. If the aggregate had a lower preference (like 5), it might override dynamic routing information, leading to suboptimal routing or black- holed traffic.
125. Frage
Exhibit:
user@Router-1> show route 172.24/16
inet.0: 9 destinations, 9 routes (9 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
...
172.24.0.0/24 *[OSPF/150] 01:31:31, metric 0, tag 0
> to 172.20.0.2 via ge-0/0/2.0
to 172.20.1.2 via ge-0/0/3.0
user@Router-1> show route forwarding-table
Routing table: default.inet
Internet:
Destination Type RtRef Next hop Type Index NhRef Netif
...
172.24.0.0/24 user 0
172.20.0.2 ucst 551 2 ge-0/0/2.0
172.20.1.2 ucst 552 2 ge-0/0/3.0
Referring to the exhibit, which two statements are true? (Choose two.)
Antwort: B,C
Begründung:
In Junos OS, understanding the distinction between theRouting Information Base (RIB)and theForwarding Information Base (FIB)is fundamental to analyzing traffic patterns and load-balancing behavior. The RIB (show route) contains all prefixes learned via various protocols, while the FIB (show route forwarding-table) contains only the active next-hops that are actually programmed into the Packet Forwarding Engine (PFE).
According to Juniper Networks technical documentation, the default behavior for Junos OS when encounteringEqual-Cost Multipath (ECMP)routes is to select only a single next-hop from the available candidates in the RIB and install that single path into the FIB. In a default state, even if the show route output displays multiple next-hops for a destination like 172.24.0.0/24, only one would have the active route symbol (
>) and only that one would appear in the forwarding table.
In the provided exhibit, the show route output shows two next-hops for 172.24.0.0/24, but only the first one (172.20.0.2) is marked with the>symbol as the active selection. However, the subsequent show route forwarding-table output reveals thatboth next-hops(172.20.0.2 and 172.20.1.2) are currently present in the forwarding table for that same destination. This discrepancy indicates that thedefault load-balancing behavior has been modified (Option B). This modification is typically achieved by creating a routing policy with the action then load-balance per-packet (which actually results in flow-based load balancing) and applying it to the forwarding table via the export statement under [edit routing-options forwarding-table].
Because the forwarding table now contains both next-hops, the router is no longer restricted to a single path.
Therefore, therouter will choose both next-hops in the routing table (Option D)for packet forwarding, distributing flows across the two available Gigabit Ethernet interfaces (ge-0/0/2.0 and ge-0/0/3.0). This ensures higher utilized bandwidth and provides redundancy at the data plane level.
126. Frage
What prevents routing loops in a single-area OSPF network?
Antwort: D
Begründung:
OSPF uses the Dijkstra shortest path first (SPF) algorithm to calculate loop-free paths through the network based on the link-state database. Because every router has a synchronized view of the network topology and independently runs the SPF algorithm, the resulting routing table calculations inherently prevent routing loops.
127. Frage
By default, which MPLS operation is performed by the penultimate router in an LSP on the transport label?
Antwort: A
Begründung:
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.
128. Frage
You want to see a detailed list of all established BGP sessions. In this scenario, what would be a valid command to accomplish this task?
Antwort: C
Begründung:
The show bgp neighbor command in Junos OS provides a detailed description of each BGP session, including session state, options configured, and counters for messages sent and received. This is the command you would use to see a detailed list of all established BGP sessions.
129. Frage
......
Die Schulungsunterlagen zur Juniper JN0-364 Zertifizierungsprüfung von PrüfungFrage sind die besten Schulungsunterlagen zur Juniper JN0-364 Zertifizierungsprüfung. Sie sind die besten Schulungsunterlagen unter allen Schulungsunterlagen. Sie können Ihnen nicht nur helfen, die Juniper JN0-364 Prüfung erfolgreich zu bestehen, Ihre Fachkenntnisse und Fertigkeiten zu verbessern und auch eine Karriere zu machen. Sie werden von allen Ländern gleich behandelt.
JN0-364 Examsfragen: https://www.pruefungfrage.de/JN0-364-dumps-deutsch.html