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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Layer 2 Switching | 15% | - Layer 2 Forwarding and MAC Table Management - VLANs and VLAN Trunking Protocol (VTP) - Link Aggregation (LACP) - BPDU Protection, Loop Protection - Spanning Tree Protocols (STP, RSTP, MSTP) |
| Topic 2: Layer 3 Routing | 20% | - OSPF (Multi-area, LSA types, SPF calculation) - IS-IS (single area, multi-area) - Policy-Based Routing - Load Balancing and ECMP - BGP (iBGP, eBGP, route reflectors, confederations) - Route Redistribution and Route Filtering |
| Topic 3: Security and Automation | 15% | - Storm Control and Port Security - Junos PyFMT (Python-based automation) - MACsec (Encryption at Layer 2) - Ansible and Jinja2 templating - 802.1X (Port-Based Network Access Control) - Zero Touch Provisioning (ZTP) - Interactive CLI and scripts |
| Topic 4: Network Optimization and Monitoring | 15% | - Simple Network Management Protocol (SNMP) - Junos Analytics and Streaming Telemetry - Class of Service (CoS) β schedulers, drop profiles, rewrite rules - sFlow and Port Mirroring for traffic analysis - OpenConfig and YANG |
| Topic 5: Services | 15% | - DHCP Relay and Snooping - Firewall Filters (ACLs) and Policers - DNS Relay - Quality of Service (QoS) β classification, policing, shaping, queuing |
| Topic 6: High Availability | 20% | - Non-Stop Routing (NSR) - Graceful Routing Engine Switchover (GRES) - IP Surveillance and Multicast RP - Bidirectional Forwarding Detection (BFD) - Non-Stop Bridging (NSB) - Virtual Chassis (VC) and Virtual Chassis Fabric (VCF) - In-Service Software Upgrade (ISSU) |
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NEW QUESTION # 83
What is the primary function of the OSPF Area Border Router (ABR)?
Answer: B
NEW QUESTION # 84
Referring to the exhibit, which two statements are correct? (Choose two.)
Answer: C,D
Explanation:
DS-1 port status - DESG / FWD - VLAN 10 - ROOT Bridge
DS-1 port status BLK/ALT - VLAN 20
NEW QUESTION # 85
You are deploying a three-stage EVPN environment with VXLAN using EX and QFX Series switches. The leaf devices will perform the gateway services. Which two statements are correct in this scenario? (Choose two.)
Answer: A,B
Explanation:
In a three-stage EVPN-VXLAN fabric, only the leaf devices need VXLAN capabilities because they perform gateway services and act as VTEPs. Spine devices only provide IP underlay connectivity and do not require VXLAN encapsulation.
NEW QUESTION # 86
You want to implement a system in your network to simplify VLAN management that can also dynamically create and prune VLANs. How would you accomplish this task?
Answer: D
Explanation:
To simplify VLAN management and automate the creation and pruning of VLANs across a network, Juniper utilizes theMultiple VLAN Registration Protocol (MVRP).
* MVRP on Trunk Interfaces (Option C):MVRP is the IEEE 802.1ak standard that replaces the older, proprietary GVRP. It is designed to run ontrunk interfacesbetween switches.
* Dynamic Creation:When a VLAN is added to one switch, MVRP advertises its existence to neighboring switches. If those switches need to reach that VLAN, they can dynamically create it in their database.
* Pruning:If a switch no longer has any active ports or downstream neighbors interested in a specific VLAN, it stops advertising that VLAN on its trunks. This "prunes" the VLAN traffic from those links, saving bandwidth.
* Incorrect Options:Option A and Bare incorrect because GVRP is legacy and no longer the recommended protocol for modern Junos deployments.Option Dis incorrect because MVRP is meant for inter-switch trunk links to manage the fabric, not for edge access ports where VLAN membership is usually static.
NEW QUESTION # 87
Exhibit
You want to provide better performance for the video traffic that traverses your network The video traffic enters your network without any class-of-service markings According to Juniper Networks, which two classification methods are performed by the routers shown in the exhibit? (Choose two.)
Answer: C,D
Explanation:
The exhibit illustrates a standard end-to-end Class of Service (CoS) path consisting of an edge router (R1) and core/intermediate routers (R2 and R3).
Edge Classification (Option B): The scenario specifies that video traffic enters the network without any class- of-service markings. Because there are no DSCP or 802.1p bits to inspect, the ingress router (R1) cannot use simple Behavior Aggregate (BA) classification. Instead, it must use Multifield (MF) classification. MF classification allows the router to look deeper into the packet (Source/Destination IP, Protocol, Port numbers) to identify the video stream and assign it to a specific forwarding class. * Core Classification (Option D):
Once R1 has identified the traffic, it will typically apply a rewrite rule on its egress interface to mark the packets with a specific CoS value (like a DSCP code). Consequently, the downstream routers (R2 and R3) do not need to perform expensive deep-packet inspection again. They can use Behavior Aggregate (BA) classification, which simply looks at the markings in the packet header to determine the appropriate forwarding priority.
Option A and C: These are incorrect because BA classification is impossible on unmarked ingress traffic, and performing MF classification in the core is inefficient and not a recommended Juniper design practice for high-speed transit.
NEW QUESTION # 88
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