[2023年06月21日]JPNTest JN0-349試験練習テスト問題（更新された112問あります)
合格させるJuniper JN0-349試験情報と無料練習テスト
Juniper JN0-349は、企業向けルーティングおよびスイッチングの知識とスキルを開発したい個人を対象とした認定試験です。この試験は、エンタープライズ環境でJuniper Networksデバイスを管理および維持する責任があるネットワークエンジニアや管理者を対象としています。この試験に合格することで、候補者のJunos OSデバイスの設定およびトラブルシューティングの知識とスキルが検証されます。
JN0-349認定試験の主な目的は、エンタープライズ環境でJunosベースのデバイスを設定、モニタリング、トラブルシューティングするネットワーク専門家のスキルと知識を評価することです。試験はルーティングプロトコル、スイッチング、セキュリティ、高可用性などの重要な領域に焦点を当てています。候補者は、OSPF、BGP、VLAN、スパニングツリー、およびファイアウォールフィルタなどのプロトコルの設定とトラブルシューティングの熟練度を示すことが期待されています。
Juniper JN0-349 認定試験の出題範囲：
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質問 # 24
You need to a new ESXi host connected to port ge-0/0/1. One of the VMs configured with VLAN 10 is not reachable from any other device on the switch. To troubleshoot, you decide to verify of the VMs MAC address is learned properly under VLAN 10.
Which command would you use in this scenario?
- A. Show vlans 10
- B. Show Ethernet-switching table vlan-id 10
- C. Show interfaces ge-0/01 detail
- D. Monitor interface ge-0/01
正解：B
質問 # 25
Which statement is true about Layer 2 firewall filters on EX Series switches?
- A. They are stateful and evaluated by the control plane.
- B. They are stateless and evaluated by the forwarding plane.
- C. They are stateless and evaluated by the control plane.
- D. They are stateful and evaluated by the forwarding plane.
正解：B
質問 # 26
Which two statements about DIS elections in IS-IS are correct? (Choose two.)
- A. If a priority tie occurs, the router with the lower subnetwork point of attachment (SNPA) value becomes the DIS.
- B. The router with the lower priority value becomes the DIS.
- C. The router with the higher priority value becomes the DIS.
- D. If a priority tie occurs, the router with the higher subnetwork point of attachment (SNPA) value becomes the DIS.
正解：C、D
質問 # 27
Click the Exhibit button.
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. Router A does not send routes learned from Router E to Router B, Router C, and Router D
- B. Router A sends routes learned from Router E to Router B, Router C, and Router D
- C. Router A sends routes learned from Router D to Router B and Router C
- D. Router A does not send routes learned from Router D to Router B and Router C
正解：B、D
質問 # 28
Referring to the exhibit, which statement is correct?
- A. This switch is currently blocking all traffic.
- B. The ge-0/0/9 interface is using the default interface priority value.
- C. This switch has a bridge priority of 8k.
- D. The ge-0/0/15 interface is using the default port cost.
正解：C
質問 # 29
You want to configure your Junos device so that routing information from certain prefixes on a
Neighboring router are ignored.
What should you configure on your device?
- A. Martian address
- B. Firewall rule
- C. It interface
- D. vt interface
正解：A
質問 # 30
What are two benefits of 802.3ad link aggregation? (Choose two.)
- A. It increases bandwidth.
- B. It simplifies interface configuration.
- C. It creates physical layer redundancy.
- D. It ensures symmetrical paths.
正解：A、C
質問 # 31
Click the exhibit button.
Switch-1 in the exhibit receives a packet from User A with a destination MAC address of 00:26:88:02:74:47.
Which statement in this scenario is correct?
- A. Switch-1 sends the packet out ge-0/0/7 only.
- B. Switch-1 sends the packet out ge-0/0/6, ge-0/0/7, ge-0/0/8, and ge-0/0/9.
- C. Switch-1 sends the packet out ge-0/0/7, ge-0/0/8, and ge-0/0/9.
- D. Switch-1 sends the packet out ge-0/0/7 and ge-0/0/8.
正解：A
質問 # 32
Click the Exhibit button.
Referring to the exhibit, the local router should have an IS-IS adjacency with a neighboring router, but the adjacency never establishes correctly.
What should you do to solve the problem?
- A. Disable level 1 for the interfaces.
- B. Disable wide metrics.
- C. Change the local IS-IS area ID to 49.0002.
- D. Disable level 2 for the interfaces.
正解：C
質問 # 33
Exhibit.
You manage the layer 2 network shown in the exhibit, You experience a failure on the ge-0/0/0 link between Swicth-1 and Switch-2.
Which statement is correct about expected behavior?
- A. Switch-2 will remove itself from the RSTP topology.
- B. Swicth-2's ge0/0/2 port role and state will transition to root and forwarding.
- C. Switch-2 will become the root bridge for a separate RSTP topology.
- D. Switch-2's ge0/0/2 port role and state will remain as designated and forwarding.
正解：B
質問 # 34
Your network is configured with dynamic ARP inspection (DAI) using the default parameters for
all the DHCP and ARP related configurations.
You just added a new device connected to a trunk port and configured it to obtain an IP address
using DHCP.
Which two statements are correct in this scenario? (Choose two.)
- A. DAI validates the ARP packets for the new device against the DHCP snooping database.
- B. The DHCP server assign the IP addressing information to the new device.
- C. DHCP snooping adds the DHCP assigned IP address for the device to its database.
- D. The SRP request and response packets for the new device will bypass DAI.
正解：B、C
解説：
https://www.juniper.net/documentation/en_US/junos/topics/concept/port-security-dhcp-snooping-
els.html
質問 # 35
Exhibit.
Referring to the exhibit, what do the asterisks (*) indicate?
- A. The entries are new.
- B. The router receive the entries.
- C. The router originated the entries.
- D. The entries are state.
正解：C
質問 # 36
You have two routers unable to form an IS-IS Level 1 adjacency.
Which two statements describe a reason for this problem? (Choose two.)
- A. The interfaces are on different subnets.
- B. The area numbers are different.
- C. The MTU is set to 1500.
- D. Interface lo0 is not included as an IS-IS interface.
正解：A、B
質問 # 37
Click the Exhibit button.
In the exhibit, each IP subnet in the campus environment is associated with a unique VLAN ID.
Which action will ensure that Host C will communicate with Host A and Host B?
- A. Configure a port-based ACL that permits inter-VLAN routing for all configured VLANs
- B. Configure all switch ports connecting to the host devices as access ports associated with a common VLAN
- C. Configure an IRB interface for each VLAN and associate it with its corresponding VLAN
- D. Configure all switch ports connecting to the host devices as trunk ports associated with all VLANs
正解：C
質問 # 38
Click the Exhibit button.
You are implementing the network shown in the exhibit. You must ensure that all users can communicate with each other.
What are three steps that should be taken in this scenario? (Choose three.)
- A. You must configure a single logical IRB interface with an IP address for each of the three networks.
- B. You must define all ports as trunk ports and include all VLANs as members.
- C. You must create a unique logical IRB interface for each network and assign an IP address within the appropriate network.
- D. You must specify the appropriate Layer 3 IRB interface under each VLAN.
- E. You must define all ports as access ports and include the appropriate VLAN as a member.
正解：C、D、E
質問 # 39
You want to configure your Junos device so that routing information from certain prefixes on a neighboring router are ignored.
What should you configure on your device?
- A. firewall rule
- B. It interface
- C. martian address
- D. vt interface
正解：C
質問 # 40
Click the Exhibit button. A recent security audit indicates that peer-to-peer applications are
allowed on the guest VLAN and employees may have been using the guest VLAN for this
purpose.
You deploy the configuration shown in the exhibit, but it does not stop the peer-to-peer traffic.
In this scenario, what must you do to implement the security policy?
- A. Attach the filter to the VLAN
- B. Deploy storm control to block unknown unicast traffic
- C. Use persistent MAC learning
- D. Implement 802.1X on the guest VLAN
正解：D
質問 # 41
Click the Exhibit Button.
Referring to the exhibit, which two statements about the BGP connection are correct? (Choose two.)
- A. This is an EBGP peering session.
- B. This is an IBGP peering session.
- C. The local device has AS 101 configured but the peer is expecting AS 100.
- D. The local device has AS 100 configured but the peer is expecting AS 101.
正解：A、C
質問 # 42
Click the Exhibit button.
A routing table contains multiple BGP routes to the same destination prefix. The route preference is the same for each route.
Referring to the exhibit, which route would be selected?
- A. route A
- B. route B
- C. route C
- D. route D
正解：D
質問 # 43
What are two interarea OSPF LSA types? (Choose two.)
- A. Type 3 summary LSAs
- B. Type 2 network LSAs
- C. Type 4 ASBR summary LSAs
- D. Type 1 router LSAs
正解：A、C
質問 # 44
Click the Exhibit button.
You are attempting to set up VRRP with R1 and R2 being participating members. You want R1 to be the master router and R2 to be the backup router with the virtual router they create being at address
172.25.100.1. The virtual router is not pinging from either User A or User B.
Referring to the exhibit, what must be done to correct the problem?
- A. The VRRP priority value on R1 and R2 must match.
- B. The VRRP group value on R1 and R2 must match.
- C. A VRRP authentication type value is needed on R1 and R2.
- D. A VRRP policy is needed on R1 and R2.
正解：B
質問 # 45
You notice that currently two MAC addresses are associated with a single access port in the bridge table of one of your EX Series switches.
What are two explanations for this behavior? (Choose two.)
- A. The access port connects to multiple hosts through a rogue device
- B. The native VLAN feature has been associated with the access port.
- C. The mac-move-limit feature has been disabled on the access port,
- D. The access port connects to an IP phone which connects ta a host device
正解：A、B
質問 # 46
Exhibit.
Referring to the exhibit, which configuration will force traffic to always use ae0.0 as long as it is active?
- A. Option B
- B. Option C
- C. Option A
- D. Option D
正解：B
解説：
Explanation
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/redundant-trunk-groups.html
1. set protocols rstp disable
2. set redundant-trunk-group group name interface interface-name primary
3. set redundant-trunk-group group name interface interface-name
4. option: set redundant-trunk-group group name preempt-cutover-timer seconds Rapid Spanning Tree Protocol (RSTP) is enabled by default on EX Series switches to create a loop-free topology, but an interface is not allowed to be in both a redundant trunk group and in a spanning-tree protocol topology at the same time.
質問 # 47
You are a service provider and have multiple customers in a building.
You are installing a new switch that can host all of your customers. However, you would like to
ensure that one customer cannot see or broadcast to another customer.
You would also like to have them use a common gateway IP address from the building. What
should be used to provide this access?
- A. private VLAN
- B. VLAN
- C. Layer 2 tunneling
- D. filter-based VLAN
正解：A
質問 # 48
You are enabling dynamic ARP inspection on an EX4300 switch Which service is enabled by default in this scenario?
- A. MAC limiting
- B. DHCP snooping
- C. persistent MAC learning
- D. IP Source Guard
正解：B
質問 # 49
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あなたを合格させるJuniper試験にはJN0-349試験問題集：https://www.jpntest.com/shiken/JN0-349-mondaishu
JN0-349試験問題集PDF更新された問題集にはJPNTest試験合格保証付き：https://drive.google.com/open?id=1UE9r-tg3I13kDjDl1a7JZguv1gdf59IV