売れ筋トップクラスのJN0-649最新試験問題2025年最新のJuniper試験練習
JNCIP-ENT問題集でJN0-649試験は完全版問題で試験学習ガイド
JN0-649認定試験は、Juniper Networks Technologiesの専門知識を実証したいネットワークエンジニアと管理者にとって貴重な資格です。業界の主要な認証として認識されており、雇用主と同僚から高く評価されています。
JN0-649試験では、高度なルーティングの概念、スイッチングテクノロジー、セキュリティ機能、ネットワーク自動化など、幅広いトピックをカバーしています。候補者は、Juniper NetworksのオペレーティングシステムであるJunosを強く理解する必要があり、複雑なネットワーク環境を構成および管理できる必要があります。成功した候補者は、複雑な問題をトラブルシューティングし、タイムリーに効果的なソリューションを提供する能力を示します。この認定は、Juniper Networks製品と協力し、エンタープライズレベルのネットワーキングテクノロジーのスキルと専門知識を強化したいネットワークエンジニア、技術者、および管理者に最適です。
Juniper JN0-649（JNCIP-ENT）試験は、複数選択肢の問題から構成されており、受験者は3時間で試験を完了する必要があります。合格するには、受験者は少なくとも65％のスコアを取得する必要があります。試験は監督され、受験者はPearson VUEのウェブサイトを通じて試験料を登録および支払う必要があります。
質問 # 93
Referring to the outputs shown in the exhibit, which two statements are correct about the IS-IS adjacency? (Choose two.)
- A. R1 is configured to participate in Level 2 only.
- B. R1 is configured to participate in both Level 1 and Level 2.
- C. R2 is configured to participate in both Level 1 and Level 2.
- D. R2 is configured to participate in Level 2 only.
正解：B、D
質問 # 94
A Layer 2 connection does not expend across data centers. The IP subnet in a Layer 2 domain is confined within a single data center.
Which EVPN route type is used to communicate prefixes between the data centers?
- A. Type 4
- B. Type 1
- C. Type 2
- D. Type 5
正解：D
解説：
https://www.juniper.net/documentation/us/en/software/junos/evpn-vxlan/topics/concept/evpn-route-type5-understanding.html#:~:text=In%20the%20control%20plane%2C%20EVPN,subnet%20connectivity%20across%20data%20centers.
質問 # 95
Your enterprise network is running BGP VPNs to support multitenancy. Some of the devices with which you peer BGP do not support the VPN NLRI. You must ensure that you do not send BGP VPN routes to the remote peer.
Which two configuration steps will satisfy this requirement? (Choose two.)
- A. Configure a route reflector for the VPN NLRI.
- B. Configure an import policy on the remote peer to reject the routes when they are received.
- C. Configure the apply-vpn-export feature on the local BGP peer.
- D. Configure an export policy on the local BGP peer to reject the VPN routes being sent to the remote peer.
正解：C、D
解説：
Apply both the VRF export and BGP group or neighbor export policies (VRF first, then BGP) before routes from the vrf or l2vpn routing tables are advertised to other PE routers.
https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/ref/statement/vpn-apply-export-edit-protocols-bgp-vp.html
質問 # 96
Which type of BGP is used to peer with a different autonomous system?
- A. external
- B. classless
- C. static
- D. dynamic
正解：A
質問 # 97
You are configuring MVRP for automatic VLAN registration. Which two statements are true?
(Choose two.)
- A. the trunk port must be configured with "vlan all"
- B. MVRP must be configured on all access ports
- C. the trunk port must not be configured with vlan members
- D. MVRP must be configured on all trunk ports
正解：C、D
質問 # 98
You must ensure that all routes in the 10.0.0/8 address range are not advertised outside of your AS.
Which well-known BGP community should be assigned to these addresses to accomplish this task?
- A. no-advertise
- B. no-peer
- C. no-export
- D. internet
正解：C
解説：
For specifying the BGP community attribute only, you also can specify community-ids as one of the following well-known community names defined in RFC 1997:
no-advertise-Routes containing this community name are not advertised to other BGP peers.
no-export-Routes containing this community name are not advertised outside a BGP confederation boundary.
no-export-subconfed-Routes containing this community are advertised to IBGP peers with the same AS number, but not to members of other confederations.
llgr-stale-Adds a community to a long-lived stale route when it is readvertised.
no-llgr-Marks routes which a BGP speaker does not want to be retained by LLGR. The Notification message feature does not have any associated configuration parameters.
https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/ref/statement/community-edit-routing-options.html
質問 # 99
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. PoE is not enabled on the ge-0/0/0 interface.
- B. The maximum wattage that this switch can allocate to attached Ethernet devices is 100 watts.
- C. If the total power consumption exceeds 90 watts, the ge-0/0/11 interface will continue to receive power.
- D. The ge-0/0/10 interface supports PoE+.
正解：B、D
解説：
POE is enabled in the interface ge-0/0/0 but nothing is connected to it. switch is in AT mode (poe+) and interface ge-0/0/11 supports poe+ judging by maximun wattage.
質問 # 100
Your campus EX9200 core devices are highly oversubscribed on bandwidth ans reporting massive dropped packets.
To immediately address the issue, you decide to implement shaping on all interfaces.
Which action will accomplish?
- A. Apply the input-shape-rate 5G parameter to all interfaces under the [edit class-of service] hierarchy.
- B. Apply the shape-rate 5G parameter to all interfaces under the [edit class-of service] hierarchy.
- C. Define a CoS input traffic control profile with the shape-rate 5G parameter and apply it to all interfaces.
- D. Define a CoS output traffic control profile with the shape-rate 5G parameter and apply it to all interfaces.
正解：D
解説：
https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/cos-shaping-rate- on-physical-interfaces-configuring.html
質問 # 101
Which two multicast listener registration protocols are supported in the Junos operating system? (Choose two.)
- A. DVMRP
- B. PIM
- C. MLD
- D. IGMP
正解：C、D
解説：
internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) are the Multicast Group Membership Discovery (MGMD) protocols
質問 # 102
Your network has an unmanaged switch between the hosts and your EX Series switch. After the traffic enters the EX Series switch, each host must be on a separate VLAN.
How would you accomplish this task?
- A. Configure interface ge-0/0/3 to a mode trunk to assign the VLANs.
- B. Configure VSTP on interface ge-0/0/1 to assign the VLANs.
- C. Configure an output firewall filter on interface ge-0/0/1 to match the destination MAC or IP address of the hosts to assign the VLANs.
- D. Configure an input firewall filter on interface ge-0/0/3 to match the source MAC or IP address of the hosts to assign the VLANs.
正解：A
質問 # 103
You are deploying an 802.1X solution and must determine what would happen if clients are unable to re-authenticate to the RADIUS server.
In this scenario, which configuration would provide access to the network if the supplicant is already authenticated?
- A. permit
- B. move
- C. sustain
- D. deny
正解：C
質問 # 104
Your enterprise network uses routing instances to support multitenancy. Your Junos devices use BGP to peer to multiple BGP devices. You must ensure that load balancing is achieved within the routing instance.
Which two statements would accomplish this task? (Choose two.)
- A. Configure the multipath option at the [edit routing-instances <instance-name> routing-options] hierarchy.
- B. Configure a load-balance per-packet policy and apply it at the [edit routing-options forwarding- table] hierarchy.
- C. Configure the multipath option at the [edit protocols bgp group] hierarchy.
- D. Configure the multipath option at the [edit protocols bgp group <group-name> neighbor] hierarchy.
正解：A、B
解説：
To enable these features on a Layer 3 VPN routing instance, include the vpn-unequal-cost equal- external-internal statement at the [edit routing-instances routing-instance-name routing-options multipath] hierarchy level and the vrf-table-label statement at the [edit routing-instances routing- instance-name] hierarchy level.
https://www.juniper.net/documentation/us/en/software/junos/vpn-l3/topics/ref/statement/multipath- edit-routing-options.html
質問 # 105
You have a workstation and an IP phone that connect to the same physical port on your Juniper switch. Which statement is true?
- A. The switch port must be configured as a trunk port.
- B. You must configure two logical interfaces on the switch port.
- C. The workstation and the phone both must send tagged traffic to the switch.
- D. The access port can be configured to accept tagged and untagged traffic.
正解：D
質問 # 106
Referring to the exhibit, which two statements are true with regards to deploying CoS? (Choose two.)
- A. You should apply BA classifiers on the LAN-facing interfaces of the routers
- B. You should apply MF classifiers on the point-to-point interfaces of the routers
- C. You should apply MF classifiers on the LAN-facing interfaces of the routers
- D. You should apply BA classifiers on the point-to point interfaces of the routers.
正解：C、D
質問 # 107
BGP multipath or multihop are not configured in your network. In this scenario, what is the correct sequence for BGP active route selection?
- A. higher local preference
shortest AS path
lowest peer address
lowest router ID
lower origin code - B. higher local preference
shortest AS path
lowest router ID
lowest peer address
lower origin code - C. higher local preference
lowest router ID
lowest peer address
lower origin code
shortest AS path - D. higher local preference
shortest AS path
lower origin code
lowest router ID
lowest peer address
正解：D
解説：
BGP Path Selection process follows this order
1.Weight (Bigger is better)
2. Local preference (Bigger is better)
3. Self originated (Locally injected is better than iBGP/eBGP learned)
4. AS-Path (Smaller is better)
5. Origin
6. MED (Smaller is better)
7. External (Prefer eBGP over iBGP)
8. IGP cost (Smaller is better)
9. EBGP Peering (Older is better)
10. Router- ID
http://www.next-itsolutions.co.uk/wp-content/uploads/2015/09/CCIE-BGP-Best-Path- Selection1.png
https://www.juniper.net/documentation/us/en/software/junos/vpn-l2/bgp/topics/concept/routing- protocols-address-representation.html
質問 # 108
Which two multicast listener registration protocols are supported in the Junos operating system?
(Choose two.)
- A. DVMRP
- B. PIM
- C. MLD
- D. IGMP
正解：C、D
解説：
Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) are the Multicast Group Membership Discovery (MGMD) protocols.
質問 # 109
Which two statements about MVRP are correct? (Choose two.)
- A. MVRP is enabled by adding trunk ports under the [edit protocols mvrp] hierarchy.
- B. MVRP monitors interfaces using VSTP and dynamically creates VLANs as necessary
- C. MVRP can propagate dynamic VLANs created on one switch to another switch
- D. MVRP PDUs are sent to other switches as periodic intervals.
正解：A、D
質問 # 110
Remote branches connect to the corporate WAN through access switches. The access switches connect to access ports on the WAN distribution switch, as shown in the exhibit. L2PT has previously been configured on the tunnel Layer 2 traffic across the WAN. You decide to move the L2PT tunnel endpoints to the access switches. When you apply the L2PT configuration to the access switches, the ports that connect the access switches to the distribution switch shut down.
Which action would solve this problem?
- A. Configure a GRE tunnel to encapsulate the L2PT traffic across the WAN.
- B. Disable the BPDU block function on the distribution switch.
- C. Disable the BPDU block function on the access switches.
- D. Configure the links between the access switches and the distribution switch as a trunk port.
正解：D
解説：
* Understanding the Problem:
* The ports between the access switches and the distribution switch are shutting down when the L2PT configuration is applied. This typically happens due to a mismatch in port configurations or protocol incompatibilities.
* Examining the Configurations:
* L2PT (Layer 2 Protocol Tunneling) allows tunneling of Layer 2 traffic, which includes protocols like STP (Spanning Tree Protocol), CDP (Cisco Discovery Protocol), VTP (VLAN Trunking Protocol), etc. over a Layer 2 network.
* If the L2PT is applied on access ports, it may lead to conflicts or shut down the ports as access ports are typically not configured to handle Layer 2 protocol traffic beyond their designated VLAN.
* Solution: Configure Trunk Ports:
* By configuring the links between the access switches and the distribution switch as trunk ports, you allow multiple VLANs to be carried over a single physical link. Trunk ports can carry tagged traffic for multiple VLANs, which includes the tunneled Layer 2 protocols.
* This setup prevents the ports from shutting down and enables the correct tunneling of Layer 2 protocols.
References:
* Juniper Documentation on L2PT Configuration
* Troubleshooting Layer 2 Protocol Tunneling Issues
質問 # 111
Referring to the exhibit, which two statements are true regarding Q-in-Q tunneling? (Choose two)
- A. The C-VLAN 150 will be sent as the inner VLAN tag
- B. The C-VLAN traffic will be encapsulated with an outer VLAN tag of 10.
- C. The C-VLANs 100-200 will be sent as the inner VLAN tag
- D. The C-VLAN traffic will be encapsulated with an outer VLAN lag of 150
正解：B、C
質問 # 112
Referring to the exhibit, which two statements are true? (Choose two)
- A. There can be more than one OSPF neighbor on the ge-0/0/0 interface
- B. The DR election process is not finished for the ge-0/0/0 interface
- C. There can be more than one OSPF neighbor on the ge-0/0/1 interface.
- D. There is no need for a DR for the ge-0/0/0 interface.
正解：D
質問 # 113
When configuring connectivity to a VoIP enabled phone, which two statements are correct?
(Choose two.)
- A. The switch places voice traffic in the best-effort forwarding class by default.
- B. The switch can signal to the phone device which VLAN tag it should use for voice traffic.
- C. The telephone device can signal to the switch which VLAN tag it will place on voice traffic.
- D. The switch places voice traffic in the expedited forwarding class by default.
正解：B、D
質問 # 114
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