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| Section | Weight | Objectives |
|---|---|---|
| Network Optimization and Monitoring | 15% | - Junos Analytics and Streaming Telemetry - Class of Service (CoS) — schedulers, drop profiles, rewrite rules - sFlow and Port Mirroring for traffic analysis - Simple Network Management Protocol (SNMP) - OpenConfig and YANG |
| Layer 2 Switching | 15% | - BPDU Protection, Loop Protection - Layer 2 Forwarding and MAC Table Management - VLANs and VLAN Trunking Protocol (VTP) - Spanning Tree Protocols (STP, RSTP, MSTP) - Link Aggregation (LACP) |
| Services | 15% | - Firewall Filters (ACLs) and Policers - Quality of Service (QoS) — classification, policing, shaping, queuing - DNS Relay - DHCP Relay and Snooping |
| High Availability | 20% | - Virtual Chassis (VC) and Virtual Chassis Fabric (VCF) - Bidirectional Forwarding Detection (BFD) - In-Service Software Upgrade (ISSU) - IP Surveillance and Multicast RP - Non-Stop Bridging (NSB) - Graceful Routing Engine Switchover (GRES) - Non-Stop Routing (NSR) |
| Security and Automation | 15% | - MACsec (Encryption at Layer 2) - 802.1X (Port-Based Network Access Control) - Zero Touch Provisioning (ZTP) - Interactive CLI and scripts - Junos PyFMT (Python-based automation) - Storm Control and Port Security - Ansible and Jinja2 templating |
| Layer 3 Routing | 20% | - Route Redistribution and Route Filtering - OSPF (Multi-area, LSA types, SPF calculation) - BGP (iBGP, eBGP, route reflectors, confederations) - Load Balancing and ECMP - IS-IS (single area, multi-area) - Policy-Based Routing |
>> JN0-650 Test Objectives Pdf <<
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NEW QUESTION # 64
Click the Exhibit button.
Which statement about the configuration shown in the exhibit is correct?
Answer: D
Explanation:
The configuration defines a local rendezvous point address under PIM and enables sparse mode on interfaces. This makes the router act as a statically configured RP for PIM sparse-mode multicast groups.
NEW QUESTION # 65
Which two statements are correct about EVPN/VXLAN deployments? (Choose two.)
Answer: B,D
Explanation:
In EVPN/VXLAN deployments, the original VLAN tag is removed before traffic is encapsulated and transported across the IP fabric using VXLAN.
Because VXLAN uses VNIs to identify Layer 2 segments across the fabric, the VLAN IDs on the source and destination access ports do not need to match.
NEW QUESTION # 66
Which two statements are correct about OSPFv2 and OSPFv3? (Choose two.)
Answer: A,D
Explanation:
OSPFv2 (IPv4) and OSPFv3 (IPv6) share many fundamental concepts, such as the SPF algorithm and the use of areas, but they have distinct differences in how they handle prefix information and LSA headers in Junos OS.
* Backbone Requirement (Option C):Both OSPFv2 and OSPFv3 utilize a hierarchical structure. In both versions, all areas must connect to a centralArea 0 (the backbone)to allow for inter-area routing.
If an area is not physically connected to Area 0, a virtual link must be established.
* Flooding Scope (Option D):One of the significant architectural changes in OSPFv3 is the inclusion of theflooding scopedirectly into the LSA header. In OSPFv3, the LS Type field is expanded to 16 bits, where the top three bits define the flooding scope (e.g., Link-local, Area, or AS scope). This allows routers to understand how far an LSA should be propagated without needing to understand the specific LSA type itself.
* LSA Prefix Information (Option A):This statement is misleading. In OSPFv2, Router and Network LSAs (Type 1 and 2) carry both topology and prefix information. However, a key design goal of OSPFv3 was toseparatetopology from prefix information. In OSPFv3, Type 1 and 2 LSAs only describe the topology, while prefixes are carried in new LSA types:Intra-Area-Prefix-LSAs(Type 9) andLink-LSAs(Type 8).
* Processing (Option B):OSPFv2 is processed "per-subnet" because it forms adjacencies based on IPv4 subnets. OSPFv3 is processed"per-link", meaning it forms adjacencies between interfaces on the same physical link regardless of whether they share a common IPv6 prefix.
NEW QUESTION # 67
Which three MSTP parameters must match on all switches in the same MST region? (Choose three.)
Answer: A,C,D
NEW QUESTION # 68
You are evaluating a BGP routing policy that has a route-filter clause that includes its own action (e.g..
accept) within the filter block. The policy is also using a then clause.
Which statement is correct in this scenario?
Answer: D
Explanation:
In Junos OS routing policies, the order of evaluation and the impact of terminal actions are critical for predictable control.
* Immediate Execution (Option D):When a route-filter contains an explicit action like accept or reject within its block, that action is consideredterminalif a match is found.
* Evaluation Flow:The policy engine processes terms and conditions from top to bottom. If a prefix matches a route-filter that has an embedded accept action, the policyexecutes that action immediately and stops further evaluation of that specific term. Consequently, any subsequent then clause in the same term is completely ignored.
* Best Practice:To ensure a then clause (which might include modifications like changing a preference or community) is executed, the route-filter should be defined without an internal action, allowing the match to fall through to the term's common then statement.
NEW QUESTION # 69
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