使用最新JN0-650試題 -無需擔心Enterprise Routing and Switching, Professional (JNCIP-ENT)考試

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Juniper JN0-650 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Services	15%	- DHCP Relay and Snooping - DNS Relay - Quality of Service (QoS) — classification, policing, shaping, queuing - Firewall Filters (ACLs) and Policers
Topic 2: Layer 3 Routing	20%	- Route Redistribution and Route Filtering - OSPF (Multi-area, LSA types, SPF calculation) - Policy-Based Routing - IS-IS (single area, multi-area) - Load Balancing and ECMP - BGP (iBGP, eBGP, route reflectors, confederations)
Topic 3: Layer 2 Switching	15%	- BPDU Protection, Loop Protection - Layer 2 Forwarding and MAC Table Management - Link Aggregation (LACP) - VLANs and VLAN Trunking Protocol (VTP) - Spanning Tree Protocols (STP, RSTP, MSTP)
Topic 4: Network Optimization and Monitoring	15%	- OpenConfig and YANG - Junos Analytics and Streaming Telemetry - Simple Network Management Protocol (SNMP) - Class of Service (CoS) — schedulers, drop profiles, rewrite rules - sFlow and Port Mirroring for traffic analysis
Topic 5: Security and Automation	15%	- Junos PyFMT (Python-based automation) - 802.1X (Port-Based Network Access Control) - Interactive CLI and scripts - Ansible and Jinja2 templating - Zero Touch Provisioning (ZTP) - MACsec (Encryption at Layer 2) - Storm Control and Port Security
Topic 6: High Availability	20%	- Graceful Routing Engine Switchover (GRES) - Bidirectional Forwarding Detection (BFD) - Virtual Chassis (VC) and Virtual Chassis Fabric (VCF) - IP Surveillance and Multicast RP - In-Service Software Upgrade (ISSU) - Non-Stop Routing (NSR) - Non-Stop Bridging (NSB)

>> 最新JN0-650試題 <<

JN0-650考試證照，JN0-650學習資料

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最新的 JNCIS-ENT JN0-650 免費考試真題 (Q90-Q95):

問題 #90
You run a multivendor switching environment where you have configured VSTP. You have 450 VLANs and notice that some of your VLANs do not function properly. How should you change the configuration to get all 450 VLANs working?

A. Enable RSTP to handle additional VLANs.
B. Set the VLAN max-age to 3600 or more.
C. Include the force-version stp; statement in your configuration.
D. Increase the bridge priority on all VLANs to at least 16k.

答案：C

解題說明：
In a multivendor environment, enabling force-version stp ensures compatibility with other vendors' STP implementations. By default, VSTP may not properly handle a large number of VLANs across mixed vendors, and forcing the STP version allows all 450 VLANs to function correctly.

問題 #91
Referring to Spanning Tree Protocol, what is the function of loop protection?

A. It sets a port to blocking state when BPDUs are detected on that port.
B. It prevents a port from entering forwarding state when BPDUs are not detected on that port.
C. It sets a port to forwarding state when BPDUs are not detected on that port.
D. It introduces a time-to-live in the BPDUs.

答案：B

問題 #92
Which two statements are correct about EVPN/VXLAN deployments? (Choose two.)

A. The VLAN tags are removed before traffic is sent through the IP fabric.
B. The VLAN tags are maintained when traffic is sent through the IP fabric.
C. The VLAN tags associated with source and destination ports for a given flow are not required to match.
D. The VLAN tags associated with source and destination ports for a given flow must match.

答案：A,C

解題說明：
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.

問題 #93
Which two statements are true regarding CoS on Juniper devices? (Choose two.)

A. ToS classification uses 6 bits.
B. DSCP classification uses 6 bits.
C. ToS classification uses 3 bits.
D. DSCP classification uses 3 bits.

答案：B,C

問題 #94
You are deploying IP phones in your enterprise networks. When plugged in, the IP phones must automatically be provided with their geographic location details by the EX Series switches. In this scenario, which protocol should be used to enable this behavior?

A. MP-BGP
B. CDP
C. LLDP-MED
D. LLDP

答案：C

解題說明：
LLDP-MED (Link Layer Discovery Protocol - Media Endpoint Discovery) allows EX Series switches to provide geographic location information, VLAN assignments, and PoE parameters to connected IP phones automatically. This ensures phones receive location-based configuration without manual intervention.

問題 #95
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