JN0-650考試內容 & JN0-650權威認證

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Juniper JN0-650 考試大綱：

主題	簡介
主題 1	Ethernet Switching and Spanning Tree: This section covers advanced Layer 2 switching including filter-based VLANs, private VLANs, MVRP, Layer 2 tunneling via Q-in-Q and L2PT, plus MSTP and VSTP protocols.
主題 2	EVPN: This section addresses Ethernet VPN technology for Layer 2 over Layer 3 connectivity, covering EVPN route types, VXLAN encapsulation, and multi-homing configurations.
主題 3	IP Telephony Features: This section focuses on features supporting VoIP deployments including Power over Ethernet, LLDP LLDP-MED protocols, and voice VLAN implementation.
主題 4	Interior Gateway Protocols (IGPs): This domain covers internal routing protocols operating within a single autonomous system, including OSPFv2, OSPFv3, and routing policy implementation, along with configuration, troubleshooting, and monitoring skills.
主題 5	Class of Service (CoS): This domain covers QoS mechanisms in Junos including CoS processing, header fields, forwarding classes, classification, policers, schedulers, drop profiles, shaping, and rewrite rules.
主題 6	Layer 2 Authentication and Access Control: This domain examines network access control mechanisms including 802.1x, MAC RADIUS, captive portal, server fail fallback, guest VLANs, and multi-method authentication considerations.
主題 7	IP Multicast: This domain addresses one-to-many communication using multicast routing, covering addressing, ASM vs SSM models, RPF, IGMP snooping, PIM sparse-mode, rendezvous points, Anycast RP, MSDP, and routing policies.

>> JN0-650考試內容 <<

JN0-650權威認證 - JN0-650試題

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最新的 JNCIS-ENT JN0-650 免費考試真題 (Q120-Q125):

問題 #120
You are currently using VLAN IDs 2 through 300 within your Layer 2 domain and you need to configure VSTP to prevent loops You must ensure that all VL ANs are loop free.
In this scenario, which statement is correct?

A. You must enable all VLANs, 2 through 300, under the VSTP configuration
B. You must ensure that the bridge priority is set to the lowest value on all switches in the Layer 2 domain
C. You must enable RSTP to account for all VLANs
D. You must ensure that the VLANs are balanced between two different root bridges

答案：A

問題 #121
Click the Exhibit button.

Which two statements about the configuration shown in the exhibit are correct? (Choose two.)

A. The factory-default CoS configuration is applied to the interface.
B. This router performs CoS on both inbound and outbound traffic.
C. This CoS configuration limits interface bandwidth.
D. Network control and best-effort traffic are assigned the same CoS priority.

答案：A,D

解題說明：
The output shows both best-effort and network-control queues using low priority, so they are assigned the same CoS priority.
The queue allocation shown matches the factory-default CoS behavior, with best-effort assigned most of the bandwidth and network-control assigned a small reserved portion.

問題 #122
You are configuring a Juniper switch. You assign a VLAN to an interface, but do not configure a port mode.
Which statement is true?

A. The port is in trunk mode.
B. If multiple VLAN members are configured, the port is placed in trunk mode.
C. The port is in access mode.
D. If a single VLAN member is configured, the port is placed in access mode.

答案：C

問題 #123
Which statement is true regarding virtual links in OSPF?

A. Virtual links connect a router to Area 0 when a physical link to Area 0 is not available.
B. Virtual links connect VRF routing instances to an OSPF domain.
C. Virtual links have a metric of 0.
D. Virtual links are used to carry external LSAs across a stub area.

答案：A

問題 #124
Which two statements are true regarding auto-RP? (Choose two.)

A. It uses flood and prune in the network.
B. It requires both sparse and dense mode PIM.
C. It requires PMI Dense mode only.
D. It requires PMI Sparse mode only.

答案：A,B

問題 #125
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