[2022年02月] 更新されたのはJuniper JN0-681問題集PDFオンラインエンジン
JN0-681.PDFで問題解答！サンプル問題は信頼され続けます
Juniper JN0-681 認定試験の出題範囲：
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質問 23
Referring to the exhibit, which two MAC addresses are learned from the local side of the MC-LAG link?
- A. 4c:96:14:e8:c6:fd and 4c:96:14:e8:a6:16
- B. 4c:96:14:e8:c6:fe and 4c:96:14:e8:a6:16
- C. 4c:96:14:e8:f0:21 and 4c:96:14:e8:a6:16
- D. 4c:96:14:e8:c6:fd and 4c:96:14:e8:f0:21
正解: B
質問 24
Your manager asks you to secure ARP and DHCP traffic across your local Ethernet links In this scenario, which technology will accomplish this task?
- A. SSL
- B. IPsec
- C. MAC sec
- D. A firewall filter
正解: C
質問 25
What are three functions supported by the Contrail Command user interface? (Choose two.)
- A. Onboarding of an IP fabric
- B. Configuring management domains
- C. Integrated syslog collector
- D. Enabling VM-to-BMS bridging
- E. Creating virtual network
正解: B,C,E
質問 26
After configuring an IP fabric using EBGP as you protocol, you notice that not all of the routers are showing up in the routing tables. You have verified that all adjacencies have formed, and place and configured properly.
In this scenario, which statement is true?
- A. The routers have not been configured using the multihop parameter.
- B. The routers have not been configured using the bfd-1 Liveness-detection parameter.
- C. The routers have not been configured using the add-path parameter
- D. The routers have not been configured with the multipath multiple-as parameter.
正解: D
質問 27
Which two statements about VXLAN are true? (Choose two.)
- A. Devices that terminate VXLAN tunnels are known as VTEPs.
- B. VXLAN adds an additional 32 bytes worth of headers.
- C. A VTEP is virtual or physical device that maps end devices to VXLAN segments.
- D. VXLAN uses a UDP destination port 4987.
正解: A,C
質問 28
Referring to the exhibit, R1 and R2 are QFX5100s and are acting as VXLAN Layer 2 Gateways for VLAN 100 using PIM-SM signaling.
What will cause R2 to send a (*.G) PIM Join towards the RP?
- A. R2 will send a (*.G) PIM Join when it receives broadcast, multicast, or unknown unicast traffic from Host B.
- B. R2 will send a (*.G) PIM Join when it first learns the MAC address of a locally attached host.
- C. R2 will send a (*.G) PIM Join when its VLAN 100 configuration is committed.
- D. R2 will send a (*.G) PIM Join when it receives broadcast, multicast, or unknown unicast traffic from Host A.
正解: C
質問 29
Which EVPN service consists of a single broadcast domain per EVPN instance?
- A. a VLAN-based service interface
- B. a VLAN bundle service interface
- C. a port-based service interface
- D. a port-based VLAN-aware service interface
正解: A
質問 30
You want to configure redundant Layer 3 gateways.
In this scenario, which two Juniper best practices would accomplish this task? (Choose two.)
- A. allowing Junos to dynamically create the virtual IP address of the IRB interface.
- B. configuring both IRB interfaces manually with the same MAC address.
- C. allowing Junos to dynamically create the virtual MAC address of the IRB interface.
- D. configuring both IRB interfaces manually with the same IP address.
正解: C,D
解説:
Explanation
質問 31
What is the purpose of the command shown in the exhibit?
- A. To stop the reception of transit multicast traffic when there are no interested receives attached to the local VTEP
- B. To stop the transmission of transit multicast traffic when there are no interested receives attached to a remote VTEP
- C. To disable the group2390.0.1 across the entire VXLAN.
- D. To disallow IGMP request for the group 239.0.01 from host attached to the local VTEP
正解: B
質問 32
You are logged in to Leaf 1.
When examining the routing table, you notice that you have no routes from Leaf 2.
Referring to the exhibit, which two commands would you use to troubleshoot the problem? (Choose two.)
- A. From Leaf 1, issue the show route receive-protocol bgp 172.16.1.1command.
- B. From Spine 1, issue the show route advertising-protocol bgp 172.16.1.2command.
- C. From Spine 1, issue the show route advertising-protocol bgp 172.16.1.1command.
- D. From Leaf 2, issue the show route advertising-protocol bgp 172.16.1.2command.
正解: A,B
質問 33
You are implementing perimeter security for your data center. You need to inspect all traffic at Layer 7 and ensure the failure of a port or device will not result in an interruption to traffic flows.
In this scenario, which design would satisfy these requirements?
- A. SRX chassis cluster
- B. QFX Virtual Chassis
- C. MX with MC-LAG
- D. SRX using LAG
正解: A
解説:
Explanation
質問 34
Referring to the exhibit, DC1 and DC2 have a DCI across a service provider WAN connection. Host1 in DC1 must have Layer 2 connectivity to host2 in DC2. A VXLAN tunnel must be created between VTEP1 and VTEP2.
In this scenario, which statement is true?
- A. The service provider WAN connection be an MPL5-based WAN connection.
- B. VTEP and VTEP2 must peer using IBGP.
- C. VXLAN Layer 3 gateway must be provisioned at the Super Spine layer.
- D. A route to the loopback address on VTEP must be present on VTEP1.
正解: D
質問 35
You have deployed two data centers that require a Layer 2 stretch between host1 and host2.
Referring to the exhibit, what does a Layer 2 stretch require?
- A. a VXLAN tunnel originating on the Super Spine Layer in DC1 to the Super Spine Layer in DC2.
- B. a VXLAN tunnel originating on VTEP1 to VTEP2.
- C. a VXLAN tunnel originating on the Spine Layer in DC1 to the Spine Layer in DC2.
- D. a VPLS WAN connection between data centers.
正解: B
質問 36
Referring to the exhibit, what would cause the problem on VCP 0/50?
- A. VCP 0/50 is configured as a network port.
- B. The VCP has been disabled through configuration
- C. The remote side is not configured as a VCP
- D. The port is missing the interface hardware
正解: C
質問 37
You are configuring an IP Fabric in your data center and you are trying to load-balance traffic across multiple equal-cost BGP routes. You have enabled multipath, but the traffic is not being load-balanced.
Referring to the exhibit, what will solve this problem?
- A. You should apply the load-balance policy as an import policy to the forwarding table.
- B. You should apply the load-balance policy as an export policy to the forwarding table.
- C. You should apply the load-balance policy as an import policy for the BGP neighbor.
- D. You should apply the load-balance policy as an export policy to the BGP neighbor.
正解: B
質問 38
You are implementing perimeter security for your data center. You need to inspect all traffic at Layer 7 and ensure the failure of a port or device will not result in an interruption to traffic flows.
In this scenario, which design would satisfy these requirements?
- A. SRX chassis cluster
- B. QFX Virtual Chassis
- C. MX with MC-LAG
- D. SRX using LAG
正解: A
質問 39
You are configuring an IP Fabric in your data center and you are trying to load-balance traffic across multiple equal-cost BGP routes. You have enabled multipath, but the traffic is not being load-balanced.
Referring to the exhibit, what will solve this problem?
- A. You should apply load-balance policy as an import policy to the forwarding table
- B. You should apply the load-balance policy as an export policy to the forwarding table
- C. You should apply the load-balance policy as an export policy to the BGP neighbor
- D. You should apply the load-balance policy as an export policy for the BGP neighbor
正解: B
質問 40
You are asked to configure VXLAN for you c data center using multicast to exchange VTEP information?
In this scenario, which two configuration parameters must match on the VTEPs in the same VXLAN segment? (Choose two.)
- A. VNI
- B. Multicast group
- C. VLAN ID
- D. Routing instance name
正解: A,B
質問 41 
Referring to the exhibit, what is the MAC address of the IRB interface on router PE1?
- A. 1:100::0::100::a
- B. a8:d0:e5:54:0d:10
- C. 2.91.223.216:100
- D. 2.10.255.0.1:100
正解: B
質問 42
A VXLAN has been created between devices leaf1 and leaf3.
Referring to the exhibit, which statement is true?
- A. Traffic sent from host1 to host2 will be dropped on leaf1.
- B. Traffic sent from host1 to host2 will be tagged with VLAN ID 100 when existing leaf3
- C. Traffic sent from host1 to host2 will be tagged with VLAN ID 200 when existing leaf3
- D. Traffic sent from host1 to host2 will be dropped on leaf3
正解: C
質問 43 
Referring to the exhibit, R1 and R2 are QFX5100s and are acting as VXLAN Layer 2 Gateways for VLAN 100 using PIM-SM signaling.
What will cause R2 to send a (*.G) PIM Join towards the RP?
- A. R2 will send a (*.G) PIM Join when it receives broadcast, multicast, or unknown unicast traffic from Host B.
- B. R2 will send a (*.G) PIM Join when it first learns the MAC address of a locally attached host.
- C. R2 will send a (*.G) PIM Join when its VLAN 100 configuration is committed.
- D. R2 will send a (*.G) PIM Join when it receives broadcast, multicast, or unknown unicast traffic from Host A.
正解: C
質問 44
Referring to the exhibit, DC1 and DC2 have a DCI across a service provider WAN connection. Host1 in DC1 must have Layer 2 connectivity to host2 in DC2. A VXLAN tunnel must be created between VTEP1 and VTEP2.
In this scenario, which statement is true?
- A. A route to the loopback address on VTEP2 must be present on VTEP1.
- B. VTEP1 and VTEP2 must peer using IBGP.
- C. The service provider WAN connection cannot be an MPLS-based WAN connection.
- D. VXLAN Layer 3 gateway must be provisioned at the Super Spine layer.
正解: A
質問 45 
The exhibit shows an output from a QFX5100 Series switch serving as an MC-LAG peer.
Which two statements are true in this scenario? (Choose two.)
- A. et-0/0/51.0 is a member link of qfx5100-1 within an MC-AE bundle.
- B. et-0/0/51.0 is a standalone link and not part of an MC-AE bundle.
- C. ae1.0 is functioning as an ICL.
- D. ae0.0 is functioning as an ICL.
正解: B,D
質問 46
Referring to the exhibit, which hardware change would be made to the IP Fabric to ensure an exact 4:1 oversubscription ratio?
- A. Add three leaf nodes to the IP Fabric.
- B. Upgrade the fabric links to 100GbE.
- C. Add two leaf nodes to the IP Fabric.
- D. Add a spine node to the IP Fabric.
正解: D
質問 47
You have configured MP-IBGP to support EVPN for your overlay network. However, you are not seeing the expected routes on your edge devices.
Referring to the exhibit, how would you solve this problem?
- A. The family 12vpn signalingmust be configured on the local peer.
- B. Graceful restart must be disabled for this session.
- C. The family evpn signalingparameter must be configured on the remote peer.
- D. The group types on both devices should be set to external.
正解: C
質問 48
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