JN0-683 Braindumps Real Exam Updated on May 22, 2026 with 70 Questions
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Juniper JN0-683 Exam Syllabus Topics:
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NEW QUESTION # 17
You are preparing an sFlow monitoring system configuration.
In this scenario, what Information will be included in the datagram sent to the sFlow collector? (Choose two.)
- A. the interlace through which the packets entered the agent
- B. the sending device's serial number
- C. the source and destination VLAN for sampled packets
- D. the CRC from the sampled packet
Answer: A,C
Explanation:
* Understanding sFlow Monitoring:
* sFlow is a packet sampling technology used to monitor traffic in a network. It sends sampled packet data and interface counters to an sFlow collector, which analyzes the traffic patterns.
* Information Included in sFlow Datagram:
* Option A:The datagram sent to the sFlow collector includes information about the interface through which the packets entered the agent (the switch or router). This is crucial for understanding where in the network the traffic was captured.
* Option D:sFlow datagrams also include the source and destination VLAN for the sampled packets. This allows for detailed analysis of the traffic flow within different VLANs.
Conclusion:
* Option A:Correct-The ingress interface is included in the sFlow datagram.
* Option D:Correct-The source and destination VLANs are also included, providing context for the sampled traffic.
NEW QUESTION # 18
Referring to the exhibit, the spine1 device has an underlay BGP group that in configured to peer with its neighbors' directly connected interfaces.
Which two statements are true in this scenario? (Choose two.)
- A. Load balancing for the underlay is not configured correctly.
- B. The multihop statement is not required to establish the underlay BGP sessions.
- C. The multihop statement is required to establish the underlay BGP sessions.
- D. Load balancing for the underlay is configured correctly.
Answer: B,D
Explanation:
The multihop statement is not required to establish the underlay BGP sessions: In this scenario, the BGP peering is done with directly connected neighbors, so the multihop statement is not necessary. The multihop statement is typically used when BGP peers are not directly connected and are separated by intermediate devices. Since the peering is established directly between spine1 and the other devices, no multihop configuration is needed.
Load balancing for the underlay is configured correctly: The configuration shows the use of multipath with the multiple-as option, which enables ECMP (Equal-Cost Multi-Path) load balancing for the underlay network. This configuration allows for traffic to be distributed across multiple paths to the BGP neighbors, assuming multiple equal-cost paths exist, and the multiple- as option enables the use of multiple autonomous systems for load balancing.
NEW QUESTION # 19
Exhibit.
You have a sample configuration for connecting two sites through EVPN-VXLAN by exchanging IP prefix routes.
Referring to the exhibit, which two statements regarding the configuration are true? {Choose two.)
- A. The VNI must match on all devices for the same customer.
- B. The advertise direct-nexthop option enables the receiver to resolve the next-hop route using only information carried in the Type 5 route.
- C. The VNI should be unique on all devices for each customer site.
- D. The advertise direct-nexthop option enables the receiver to resolve the next-hop route using only information carried in the Type 2 route.
Answer: A,B
Explanation:
EVPN-VXLAN Configuration:
* The configuration provided in the exhibit shows an EVPN-VXLAN setup where IP prefix routes are exchanged between two sites. The advertise direct-nexthop option and the VNI (Virtual Network Identifier) settings are crucial in this context.
Advertise Direct-Nexthop:
* Option A:The advertise direct-nexthop option ensures that the next-hop route is resolved using only the information carried in the EVPN Type 5 route. Type 5 routes are used for IP prefix advertisement in EVPN, which is key to enabling Layer 3 interconnectivity between different VXLAN segments.
VNI Consistency:
* Option C:For the same customer across different devices, the VNI must be consistent. This consistency ensures that all devices can correctly map traffic to the appropriate VXLAN segment, maintaining seamless Layer 2 and Layer 3 connectivity.
NEW QUESTION # 20
Referring to the exhibit, Host1 (10.1.1.1) if failing to communicate with Host2 (10.1.2.1) in a data center that uses an ERB architecture.
What do you determine from the output?
- A. The traffic is failing because load balancing is not configured correctly.
- B. The traffic is entering the VXLAN tunnel.
- C. Host1 and Host2 are directly connected to leaf1.
- D. The irb.20 interface is not configured on leaf1.
Answer: B
Explanation:
The traffic is entering the VXLAN tunnel: This is the most likely cause of the issue, as indicated by the presence of VXLAN (Virtual Extensible LAN) configurations and EVPN (Ethernet VPN) MAC address tables in the exhibit. The communication between Host1 and Host2 may not be properly routed through the VXLAN tunnel, causing the failure.
NEW QUESTION # 21
Exhibit.
The exhibit shows the truncated output of the show evpn database command.
Given this output, which two statements are correct about the host with MAC address 40:00:dc:01:00:04?
(Choose two.)
- A. The host is originating from irb.300.
- B. The host is located on VN110002.
- C. The host is assigned IP address 10.4.4.5.
- D. The host is originating from an ESI LAG.
Answer: C,D
Explanation:
* Understanding the Output:
* The show evpn database command output shows the MAC address, VLAN, active source, timestamp, and IP address associated with various hosts in the EVPN instance.
* Analysis of the MAC Address:
* Option A:The MAC address 40:00:dc:01:00:04 is associated with the IP address 10.4.4.5, as indicated by the output in the IP address column. This confirms that this host has been assigned the IP 10.4.4.5.
* Option D:The active source for the MAC address 40:00:dc:01:00:04 is listed as 00:02:00:00:00:
04:00:04:00:00:04:00:04, which indicates that the host is connected via an ESI (Ethernet Segment Identifier) LAG (Link Aggregation Group). This setup is typicallyused in multi-homing scenarios to provide redundancy and load balancing across multiple physical links.
Conclusion:
* Option A:Correct-The host with MAC 40:00:dc:01:00:04 is assigned IP 10.4.4.5.
* Option D:Correct-The host is originating from an ESI LAG, as indicated by the active source value.
NEW QUESTION # 22
You want to provide a OCI that keeps each data center routing domain isolated, while also supporting translation of VNIs. Which DCI scheme allows these features?
- A. MPLS DCI label exchange
- B. over the top (OTT) with proxy gateways
- C. VXLAN stitching
- D. over the top (OTT) with VNI translation enabled
Answer: C
Explanation:
* Understanding DCI (Data Center Interconnect) Schemes:
* DCI schemes are used to connect multiple data centers, enabling seamless communication and resource sharing between them. The choice of DCI depends on the specific requirements, such as isolation, VNI translation, or routing domain separation.
* VXLAN Stitching:
* VXLAN stitching involves connecting multiple VXLAN segments, allowing VNIs (VXLAN Network Identifiers) from different segments to communicate with each other while maintaining separate routing domains.
* This approach is particularly effective for keeping routing domains isolated while supporting VNI translation, making it ideal for scenarios where you need to connect different data centers or networks without merging their control planes.
* Other Options:
* A. MPLS DCI label exchange:This option typically focuses on MPLS-based interconnections and does not inherently support VNI translation or isolation in the context of VXLAN.
* B. Over the top (OTT) with VNI translation enabled:This could support VNI translation but does not inherently ensure routing domain isolation.
* D. Over the top (OTT) with proxy gateways:This typically involves using external gateways for traffic routing and may not directly support VNI translation or isolation in the same way as VXLAN stitching.
Data Center References:
* VXLAN stitching is a powerful method in multi-data center environments, allowing for flexibility in connecting various VXLAN segments while preserving network isolation and supporting complex interconnect requirements.
NEW QUESTION # 23
You are deploying multiple Juniper switches al the same location. Your switches are currently using the factory-default configuration.
In this scenario, which two statements are correct? (Choose two.)
- A. The DHCP server configuration cannot provide Junos version requirements to DHCP clients.
- B. The switch will try to request an IP address from a DHCP server using all interfaces that are connected and are operational.
- C. The switch will try to request an IP address from a DHCP server using only the management interface.
- D. The DHCP server configuration can provide Junos version requirements to DHCP clients.
Answer: B,D
Explanation:
* DHCP Behavior in Factory-Default Configuration:
* Option B:In the factory-default configuration, Juniper switches are designed to send DHCP requests on all operational interfaces. This behavior ensures that the switch can obtain an IP address for management and further configuration from any available DHCP server.
* Option D:The DHCP server can provide additional configuration parameters, including the required Junos version. This allows for automated provisioning and ensures that the switch is running the correct software version.
Conclusion:
* Option B:Correct-The switch will use any operational interface to request an IP address via DHCP.
* Option D:Correct-The DHCP server can specify Junos version requirements, enabling automated software management.
NEW QUESTION # 24
You are deploying an IP fabric using EBGP and notice that your leaf devices are advertising and receiving all the routes. However, the routes are not installed in the routing table and are marked as hidden.
Which two statements describe how to solve the issue? (Choose two.)
- A. You need to configure multipath multiple-as.
- B. You need to configure loops 2.
- C. You need to configure as-override.
- D. You need to configure a next-hop self policy.
Answer: A,B
NEW QUESTION # 25
As part of the onboarding process for new switches being added to your data centers, your company uses Juniper Networks' ZTP process. As part of the ZTP process, a script is executed by the devices being onboarded.
Which statement is correct in this scenario?
- A. The Junos ZTP process supports Python, SLAX, and Perl.
- B. The Junos ZTP process supports Shell, Jscript, and Ansible.
- C. The Junos ZTP process supports Shell, Python, and SLAX.
- D. The Junos ZTP process supports Jscript, Ansible, and Perl.
Answer: C
Explanation:
Juniper Networks' ZTP (Zero Touch Provisioning) process automates the deployment of new devices by allowing them to fetch and execute scripts for configuration and setup as they are powered on and connected to the network.
Supported Scripting Languages:
The Junos OS supports several scripting languages that can be used during the ZTP process:
Shell scripts are often used for general automation tasks. Python is a widely supported language in Junos, offering powerful scripting capabilities for automating network tasks.
SLAX (Service Logic Execution Environment) is a scripting language specific to Junos, designed to automate configuration tasks and simplify network operations.
NEW QUESTION # 26
You are using a single tenant data center with a bridged overlay architecture. In this scenario, how do hosts of the different virtual networks communicate with each other?
- A. off-fabric using an external device
- B. using anycast gateway addresses configured on the leaf devices
- C. using EVPN Type 5 routes
- D. using virtual gateway addresses configured on the spine
Answer: A
Explanation:
* Understanding Bridged Overlay Architecture:
* In a single-tenant data center using a bridged overlay architecture, virtual networks (VLANs) are typically isolated within the fabric, with traffic between these VLANs handled outside the fabric.
* Communication Between Different Virtual Networks:
* A. off-fabric using an external device:This is correct. In many bridged overlay architectures, communication between different virtual networks is handled off-fabric, often using an external router or firewall that connects the different VLANs. The fabric itself primarily provides Layer 2 connectivity within each VLAN, leaving inter-VLAN routing to be handled externally.
Data Center References:
* This design is common in smaller or simpler data center environments where a single tenant does not require complex on-fabric routing and prefers to handle inter-VLAN routing through dedicated devices.
NEW QUESTION # 27
You are deploying multiple Juniper switches at the same location. Your switches are currently using the factory-default configuration.
In this scenario, which two statements are correct? (Choose two.)
- A. The DHCP server configuration cannot provide Junos version requirements to DHCP clients.
- B. The switch will try to request an IP address from a DHCP server using all interfaces that are connected and are operational.
- C. The switch will try to request an IP address from a DHCP server using only the management interface.
- D. The DHCP server configuration can provide Junos version requirements to DHCP clients.
Answer: B,D
Explanation:
By default, Juniper switches with factory-default configurations attempt to obtain an IP address via DHCP on any connected and operational interface, not just the management interface.
The DHCP server configuration can include options to provide Junos version requirements, such as bootfile information, to DHCP clients for automated provisioning or upgrades.
NEW QUESTION # 28
Exhibit.
Referring to the exhibit, which statement is correct?
- A. The MAC address is unknown and not in the forwarding table of the remote VTEP.
- B. VNI 100 is not configured on the remote VTEP.
- C. The MAC address is known but not reachable by the remote VTEP
- D. The remote VTEP is not responding.
Answer: A
Explanation:
* Analyzing the Exhibit Output:
* The command ping overlay tunnel-type vxlan is used to test the VXLAN tunnel between two VTEPs (VXLAN Tunnel Endpoints). The output shows a warning about missing hash parameters, but more importantly, it displays the result: End-System Not Present.
* Understanding the Response:
* The message End-System Not Present indicates that the remote VTEP (192.168.2.20) did not find the MAC address 00:00:5E:00:53:CC in its forwarding table. This typically means that the MAC address is unknown to the remote VTEP, and as a result, it could not forward the packet to the intended destination.
Conclusion:
* Option B:Correct-The MAC address is unknown and is not in the forwarding table of the remote VTEP, which is why the system reports that the "End-System" is not present.
NEW QUESTION # 29
Host A is connected to vlan 100 on lead. Host B is connected to vlan 200 on leaf1. Host A and Host B ate unable to communicate. You have reviewed the touting and your hosts have the correct default route (.1) Referring to the exhibit, which two commands will solve the problem? (Choose two.)
- A. delete vlans vn200 13-interface irb.200
- B. set vlans vn100 13-interface irb.100
- C. set interfaces irb unit 100 family inet address 192-168.100.1
- D. set routing-options static route 0.0.0.0/0 next-hop 192.168.200.10
Answer: B,D
Explanation:
VLAN 100 (BLUE) does not have an IRB interface configured, meaning there is no Layer 3 gateway for hosts in VLAN 100. Adding an IRB.100 interface with an IP address will allow routing between VLAN 100 and VLAN 200.
Even after configuring the IRB interface for VLAN 100, you need to bind it to VLAN 100 so that the switch correctly associates VLAN 100 traffic with the IRB. This ensures that the VLAN can route traffic through the correct Layer 3 gateway.
NEW QUESTION # 30
You are deploying an IP fabric using EBGP and notice that your leaf devices are advertising and receiving all the routes. However, the routes are not installed in the routing table and are marked as hidden.
Which two statements describe how to solve the issue? (Choose two.)
- A. You need to configure multipath multiple-as.
- B. You need to configure a next-hop self policy.
- C. You need to configure loops 2.
- D. You need to configure as-override.
Answer: B,C
Explanation:
You need to configure a next-hop self policy: When using EBGP, the next-hop IP address in the routing advertisements might not be reachable from the receiving device, causing the routes to be marked as hidden. By configuring the next-hop-selfpolicy, the leaf devices will change the next-hop IP to their own IP address for the routes they advertise, making them reachable within the fabric and allowing the routes to be installed in the routing table.
You need to configure loops 2: When all leaves share the same AS (common-AS design), BGP loop prevention drops routes learned from the same AS. Configuring loops 2 allows the leaf to accept routes with its own AS in the path twice, which is needed in an eBGP IP fabric with repeated AS numbers.
NEW QUESTION # 31
You are asked to deploy 100 QFX Series devices using ZTP Each OFX5120 requires a different configuration. In this scenario, what are two components that you would configure on the DHCP server?
(Choose two.)
- A. the MAC address of the FTP server
- B. the IP address of the FTP server
- C. the management IP address for each OFX5120
- D. the MAC address for each OFX5120
Answer: C,D
Explanation:
* Zero Touch Provisioning (ZTP):
* ZTP allows for the automated configuration of network devices, like QFX Series switches, without manual intervention. During ZTP, a switch will obtain its configuration from a DHCP server and then download the required software and configuration files from a specified server (e.
g., FTP, HTTP).
* DHCP Server Configuration:
* Option B:The DHCP server needs to know theMAC address for each QFX5120to provide a specific configuration based on the device identity. By mapping the MAC address to a particular configuration, the DHCP server can ensure that each switch gets the correct configuration.
* Option D:Themanagement IP address for each QFX5120must also be assigned by the DHCP server. This IP address allows the device to communicate on the network and access the configuration files and other required resources during the ZTP process.
Conclusion:
* Option B:Correct-MAC addresses allow the DHCP server to identify each QFX5120 and assign the appropriate configuration.
* Option D:Correct-Management IP addresses are essential for network communication during ZTP.
NEW QUESTION # 32
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