Verified & Latest JN0-649 Dump Q&As with Correct Answers
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NEW QUESTION # 17
The connection between DC1 and DC2 is routed as shown in the exhibit.
In this scenario, which statement is correct?
- A. L3VPN must be enabled to advertise reachability.
- B. The border devices must be able to perform Layer 3 routing and provide IRB functionality.
- C. An IP prefix route provides encoding for intra-subnet forwarding.
- D. Type 2 and Type 5 routes will be exchanged between DC1 and DC2.
Answer: B
Explanation:
https://www.juniper.net/documentation/us/en/software/junos/evpn-vxlan/topics/concept/evpn-route-type5-understanding.html
NEW QUESTION # 18
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. internet
- B. no-export
- C. no-advertise
- D. no-peer
Answer: B
Explanation:
* Understanding BGP Communities:
* BGP communities are used to tag routes with certain attributes to control their distribution and processing.
* The no-export community ensures that the routes tagged with this community are not advertised to any BGP peers outside the local AS (Autonomous System).
* Applying the no-export Community:
* To ensure that all routes in the 10.0.0.0/8 address range are not advertised outside the AS, the no-export community should be assigned to these routes. This prevents the routes from being propagated beyond the local AS boundary.
References:
* Juniper BGP Communities
* Configuring BGP Community Attributes
NEW QUESTION # 19
A user is attempting to watch a high-definition video being streamed from the media server over the network. However, the user complains that the experienced video quality is poor. While logged on to router B, a Juniper Networks device, you notice that video packets are being dropped.
In this scenario, what would solve this problem?
- A. Adjust the expedited-forwarding BA classifier on router B's ge-0/0/1 interface to support a higher transmit rate.
- B. Adjust the scheduler-map to support a higher transmit rate.
- C. Adjust the scheduler for the expedited-forwarding forwarding class to support a higher transmit rate.
- D. Adjust the expedited-forwarding BA classifier to router B's ge-0/0/0 interface to support a higher transmit rate.
Answer: C
Explanation:
Transmit rate is set on the scheduler, BA and classifier do not have transmit rate. scheduler- map=maps schedulers to fwd classes.
NEW QUESTION # 20
You must ensure that all management traffic sourced from your Junos devices is set with a specific DSCP code-point value.
Which action will accomplish this task?
- A. Apply the DSCP code-point in an egress policer.
- B. Apply the DSCP code-point to the [edit class-of-service interface lo0.0] hierarchy
- C. Apply the DSCP code-point to a rewrite rule.
- D. Apply the DSCP code-point to the [edit class-of-service host-outbound-traffic] hierarchy.
Answer: D
Explanation:
https://www.juniper.net/documentation/en_US/junos/topics/concept/cos-host-outbound-traffic- default-classification-and-dscp-remarking.html To change these default settings, include the forwarding-class class-name statement and the dscp-code-point value statement at the [edit class-of-service host-outbound-traffic] hierarchy level. This feature does not affect transit traffic or incoming traffic.
NEW QUESTION # 21
You are asked to enforce user authentication using a captive portal before users access the corporate network.
Which statement is correct in this scenario?
- A. A captive portal can be bypassed using an allowlist command containing a device's IP address.
- B. When enabled, a captive portal must be applied to each individual interface.
- C. HTTPS is the default protocol for a captive portal.
- D. All Web browser requests are redirected to the captive portal until authentication is successful.
Answer: D
Explanation:
You can set up captive portal authentication on your switch to redirect all Web browser requests to a login page that requires users to input a username and password before they are allowed access. Upon successful authentication, users are allowed access to the network and redirected to the original page requested. Junos OS provides a customizable template for the captive portal window that allows you to easily design and modify the look of the captive portal login page. You can modify the design elements of the template to change the look of your captive portal login page and to add instructions or information to the page. You can also modify any of the design elements of a captive portal login page. The first screen displayed before the captive login page requires the user to read the terms and conditions of use. By clicking the Agree button, the user can access the captive portal login page. https://www.juniper.net/documentation/us/en/software/junos/user-access/topics/topic-map/user-authentication-captive-portal.html
NEW QUESTION # 22
Which three types of ports are used for Junos Fusion Enterprise? (Choose three. )
- A. authenticated port
- B. extended port
- C. cascade port
- D. uplink port
- E. designated port
Answer: B,C,D
NEW QUESTION # 23
Referring to the exhibit, which statement is correct when a failure exists on the link between host2 and switch5 on this EVPN-VXLAN fabric?
- A. The switch5 device will send a Type 1 route to all peers.
- B. The switch5 device will send a Type 4 route to all peers.
- C. The switch5 device will send a Type 2 route to all peers.
- D. The switch5 device will send a Type 3 route to all peers.
Answer: A
Explanation:
Type 1 routes are used for per-ES auto-discovery (A-D) to advertise EVPN multi-homing mode.
Remote ToR leaf devices in the EVPN network use the EVPN Type 1 route type functionality to learn the EVPN Type 2 MAC routes from other leaf devices. In this route type ESI and the Ethernet Tag ID are considered to be part of the prefix in the NLRI. Upon a link failure between ToR leaf and end server VTEP withdraws Ethernet Auto-Discovery routes (Type 1) per ES. The Juniper EVPN multi-homing Ethernet Tag value is set to the VLAN ID for ES auto-discovery/ES route types.
Mass Withdrawal - Used for fast convergence during link failure scenarios between leaf devices to the end server using Type 1 EAD/ES routes.
NEW QUESTION # 24
A modified deficit round-robin scheduler is defined by which three variables? (Choose three.)
- A. transmit rate
- B. WRED
- C. Layer 3 fields
- D. priority
- E. buffer size
Answer: A,D,E
Explanation:
To configure MDRR, configure a scheduler at the [edit class-of-service schedulers] hierarchy level:
content_copy zoom_out_map
[edit class-of-service schedulers]
scheduler-name {
buffer-size (seconds | percent percentage | remainder | temporal microseconds); priority priority-level; transmit-rate (percent percentage | rate | remainder) <exact | rate-limit>;
}
https://www.juniper.net/documentation/us/en/software/junos/cos/topics/concept/cos-configuring- mdrr-on-enhanced-queuing-dpcs.html
NEW QUESTION # 25
You are redistributing static routes into an OSPF area. Which two statement are true is this scenario? (Choose two.)
- A. The area must be the backbone area.
- B. The routes can be advertised in type LSAs.
- C. The external route advertisements have a domain scope.
- D. The area must be stub area.
Answer: A,B
NEW QUESTION # 26
Referring to the exhibit, which LSA type is used to advertise 192.168.1.0/24 to R5?
- A. Type 7
- B. Type 5
- C. Type 3
- D. Type 4
Answer: D
NEW QUESTION # 27
You will to route Layer 3 PVLAN traffic within the secondary VLAN.
What is required to accomplish this task?
- A. an IRB
- B. an FBF policy
- C. an isolated VLAN
- D. a community VIAN
Answer: A
NEW QUESTION # 28
You are deploying IP phones to a customer site. The IP phones will be installed to share a common access port with the user's desktop computer. You are required to provide a mechanism to place user data traffic and voice traffic in different VLANs for class-service application How would you implement this solution?
- A. Apply a multifield classifier on the access ports that assigns voice packets to the assured forwarding class, based on the IP phone manufacturer's MAC QUI
- B. Configure flexible VLAN tagging on the user ports with the data and voice VLANs as members
- C. Configure VLAN tagging on the IP phones and use the voice VLAN feature on the access ports to assign lagged frames to the voice VLAN and untagged frames to a data VLAN
- D. Configure the IP phones to label voice traffic with the DSCP of code point and apply a BA classifier to the access ports to classify voce traffic
Answer: C
NEW QUESTION # 29
You are troubleshooting an EVPN-VXLAN IP fabric and observe the loop shown in the exhibit.
Which two steps would you take to further troubleshoot this problem? (Choose two.)
- A. Issue the show route table bgp.evpn.0 command on Leaf2 and verify that Type 4 routes are present.
- B. Verify that the same ESI is configured on the two links from the source.
- C. Verify that the same ESI is configured on the link from the host and that it matches the source.
- D. Issue the show route table bgp.evpn.0 command on Leaf2 and verify that Type 3 routes are present.
Answer: A,D
Explanation:
When troubleshooting an EVPN-VXLAN IP fabric loop, the following steps are crucial:
* Issue the show route table bgp.evpn.0 command on Leaf2 and verify that Type 4 routes are present: Type 4 routes indicate EVPN Ethernet Segment routes, which are essential for detecting and
* mitigating loops.
* Issue the show route table bgp.evpn.0 command on Leaf2 and verify that Type 3 routes are present: Type 3 routes (Inclusive Multicast Ethernet Tag routes) ensure that multicast and broadcast traffic is properly handled, helping identify and troubleshoot loop issues.
References:
* The commands for verifying BGP EVPN routes are standard in troubleshooting EVPN-VXLAN fabrics.
* Documentation from "Useful Juniper Commands.txt" and "Juniper Commands.pdf" which provide command references for verifying EVPN route types.
NEW QUESTION # 30
Which statement is correct about MSTP?
- A. MSTP uses slacked VLAN tags to extend a Layer 2 Ethernet connection between multiple sites
- B. MSTP dynamically manages VLAN registration in a LAN
- C. MSTP enables mapping multiple independent spanning tree instances onto one physical topology
- D. MSTP enables dynamic discovery of Layer 2 neighbors.
Answer: C
NEW QUESTION # 31
There are two BGP routes to 10.200.200.0/24 received from two external peers. Route 1 comes from a neighbor with a router ID of 10.10.100.1 and a peer IP address of 10.10.30.1, and route 2 comes from a neighbor with a router ID of 10.10.200.1 and a peer IP address of 10.10.50.1. Both routes have the same MED value, origin value, AS path length, and local preference number. In this scenario, which statement is correct about the active route?
- A. Route 1 will be active because of the peer IP address.
- B. Route 2 will be active because of the router ID.
- C. Route 1 will be active because of the router ID.
- D. Route 2 will be active because of the peer IP address.
Answer: C
Explanation:
The router determines the router ID for each peer that advertised a path to the route destination.
A lower router ID value is preferred over a higher router ID value.
The router determines the peer ID for each peer that advertised a path to the router destination. A lower peer ID value is preferred over a higher peer ID value. The peer ID is the IP address of the established BGP peering session.
NEW QUESTION # 32
You are troubleshooting a BGP connection.
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. Packet fragmentation is preventing the session from establishing.
- B. The ge-0/0/1 interface is disabled.
- C. The 192.168.1.4 peer has a misconfigured autonomous system number.
- D. The 192.168.1.5 peer has a misconfigured MD5 key.
Answer: C,D
NEW QUESTION # 33
Referring to the exhibit, which two statements are true regarding Q-in-Q tunneling? (Choose two)
- A. The C-VLANs 100-200 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-VLAN 150 will be sent as the inner VLAN tag
- D. The C-VLAN traffic will be encapsulated with an outer VLAN lag of 150
Answer: A,B
NEW QUESTION # 34
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