Juniper JN0-649 Practice Verified Answers - Pass Your Exams For Sure! [2025]
Valid Way To Pass JNCIP-ENT's JN0-649 Exam
Juniper JN0-649 Exam Syllabus Topics:
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In order to pass the exam and earn the JNCIP-ENT certification, candidates must achieve a passing score of 65% or higher. JN0-649 examination is divided into multiple-choice questions and interactive simulations, which require candidates to perform tasks within a simulated network environment. Candidates may take the exam at a Pearson VUE testing center or online, using a remote proctoring system.
Juniper Networks is a leading provider of enterprise networking solutions that help organizations connect, secure, and automate their networks. As a Juniper professional, earning the JN0-649 certification is a testament to your skills and expertise in enterprise routing and switching technologies. Enterprise Routing and Switching, Professional (JNCIP-ENT) certification is specifically designed for networking professionals who are responsible for implementing, configuring, and troubleshooting Juniper Networks' enterprise routing and switching platforms.
NEW QUESTION # 56
The policy shown in the exhibit is applied as an export policy to your BGP neighborship.
Which action will be taken for route 12.233.45.5?
- A. It will be evaluated by the next policy.
- B. It will be accepted by term 1.
- C. It will be accomplished by term 1.
- D. It will be accepted by the default policy
- E. It will be rejected by term 2.
Answer: E
NEW QUESTION # 57
A modified deficit round-robin scheduler is defined by which three variables? (Choose three.)
- A. buffer size
- B. WRED
- C. Layer 3 fields
- D. priority
- E. transmit rate
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 # 58
Which two statements about MVRP are correct? (Choose two.)
- A. MVRP can propagate dynamic VLANs created on one switch to another switch
- B. MVRP is enabled by adding trunk ports under the [edit protocols mvrp] hierarchy.
- C. MVRP PDUs are sent to other switches as periodic intervals.
- D. MVRP monitors interfaces using VSTP and dynamically creates VLANs as necessary
Answer: B,C
NEW QUESTION # 59
You are running OSPF as your IGP. The interfaces connecting two routers are in the ExStart state. You notice that something is incorrect with the configuration. Referring to the exhibit, which statement is correct?
- A. The IP addresses are incorrect.
- B. The interface type is incorrect.
- C. The MTU setting are incorrect.
- D. The subnet mask is incorrect.
Answer: C
NEW QUESTION # 60
Which three configuration parameters must match on all switches within the same MSTP region? (Choose three.)
- A. bridge priority
- B. revision level
- C. VLAN to instance mapping
- D. configuration name
- E. region name
Answer: B,C,D
Explanation:
For Multiple Spanning Tree Protocol (MSTP) to operate correctly, all switches in the same region must have the same VLAN to instance mapping, revision level, and configuration name. These parameters ensure that all switches interpret the MSTP configuration consistently.
References:
* MSTP Configuration Guide, Juniper Networks
NEW QUESTION # 61
You are asked to merge a RIP network with your OSPF network. As a first step, you establish connectivity between the RIP network and the OSPF network. The RIP network connects to an NSSA area. Which two statements are true in this scenario? (Choose two.)
- A. To share RIP routes with the OSPF network, an export policy will be required on the ASBR.
- B. By default, external OSPF routes have a higher route preference than RIP routes.
- C. Be default, RIP routes have a higher route preference than external OSPF routes.
- D. To share RIP routes with the OSPF network, an export policy will be required on the ABR.
Answer: A,B
Explanation:
Route Preference Values
OSPF Internal = 10
RIP = 100
OSPF External = 150
NEW QUESTION # 62
You must provide network connectivity to hosts that fail authentication.
In this scenario, what would be used in a network secured with 802.1X to satisfy this requirement?
- A. Configure the native-vlan-id parameter on the port.
- B. Configure the port as a spanning tree edge port.
- C. Configure a secondary IP address on the port for unauthenticated hosts.
- D. Use the server-reject-vlan command to specify a guest VLAN.
Answer: D
Explanation:
* Understanding 802.1X Authentication:
* 802.1X is a network access control protocol that restricts access until the device or user is authenticated.
* Guest VLAN Configuration:
* When hosts fail authentication, they need to be placed in a separate VLAN to provide limited network access.
* server-reject-vlan Command:
* This command configures a VLAN for unauthenticated devices.
* Ensures that devices that fail authentication are placed in a designated guest VLAN.
* Configuration Example:
shell
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set protocols dot1x authenticator interface ge-0/0/1.0 server-reject-vlan guest-vlan References:
* Juniper 802.1X Authentication Configuration Guide
* Juniper Guest VLAN Configuration
NEW QUESTION # 63
When configuring 802.1X authentication, what are three server fail fallback settings? (Choose three.)
- A. sustain
- B. log
- C. count
- D. permit
- E. move
Answer: A,D,E
Explanation:
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/radius-server-configuration- ex-series-cli.html#id-configuring-radius-server-fail-fallback-cli-procedure
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/radius-server-configuration- ex-series-cli.html Permit authentication, allowing traffic to flow from the end device through the interface as if the end device were successfully authenticated by the RADIUS server.
Deny authentication, preventing traffic from flowing from the end device through the interface.
This is the default.
Move the end device to a specified VLAN if the switch receives a RADIUS access-reject message. The configured VLAN name overrides any attributes sent by the server. (The VLAN must already exist on the switch.) Sustain authenticated end devices that already have LAN access and deny unauthenticated end devices. If the RADIUS servers time out during reauthentication, previously authenticated end devices are reauthenticated and new users are denied LAN access.
NEW QUESTION # 64
You are asked to configure 802.1X on your access ports to allow only a single device to authenticate.
In this scenario, which configuration would you use?
- A. multiple supplicant mode
- B. single supplicant mode
- C. single-secure supplicant mode
- D. MAC authentication mode
Answer: C
Explanation:
Single supplicant mode authenticates only the first end device that connects to an authenticator port. All other end devices connecting to the authenticator port after the first has connected successfully, whether they are
802.1X-enabled or not, are permitted access to the port without further authentication. If the first authenticated end device logs out, all other end devices are locked out until an end device authenticates. Single-secure supplicant mode authenticates only one end device to connect to an authenticator port. No other end device can connect to the authenticator port until the first logs out
NEW QUESTION # 65
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. The route is a Type 1 EVPN route.
- B. The host that the route is associated with is single-homed to one leaf node.
- C. The route is a Type 2 EVPN route.
- D. The host that the route is associated with is multihomed to two leaf nodes.
Answer: A,B
NEW QUESTION # 66
You have PIM SM multicast configure and running in a network environment comprised of EX4300 devices. Your customer report increased delay when switching channels using IPTV. To help decrease the delay, you implement PIM join balancing. You add the set protocol pim join- load-balance command to the configuration. After committing, you notice that the flows are still using one path.
In this scenario, which statement is correct?
- A. The clear pim join-distribution command must be issued.
- B. IGMP snooping must be configured.
- C. The interface must be specified to use for load balancing
- D. PIM join load-balancing also be configured.
Answer: A
NEW QUESTION # 67
When configuring class of services, what would be you use to allocate bandwidth to a forwarding class?
- A. buffer depth
- B. bandwidth
- C. transmit rate
- D. speed
Answer: C
NEW QUESTION # 68
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 2 route to all peers.
- C. The switch5 device will send a Type 4 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 # 69
You are asked to configure 802.1X on your access ports to allow only a single device to authenticate.
In this scenario, which configuration would you use?
- A. multiple supplicant mode
- B. single supplicant mode
- C. single-secure supplicant mode
- D. MAC authentication mode
Answer: C
Explanation:
Single supplicant mode authenticates only the first end device that connects to an authenticator port. All other end devices connecting to the authenticator port after the first has connected successfully, whether they are 802.1X-enabled or not, are permitted access to the port without further authentication. If the first authenticated end device logs out, all other end devices are locked out until an end device authenticates. Single-secure supplicant mode authenticates only one end device to connect to an authenticator port. No other end device can connect to the authenticator port until the first logs out.
NEW QUESTION # 70
Click the Exhibit.
You have a workstation and VoIP phone connected to port ge-0/0/1 on an access switch.
Referring to the configuration shown in the exhibit, which statement is true?
- A. All frames that leave the switch on interface ge-0/0/1 will be dropped.
- B. The phone will require a manual VLAN ID configuration.
- C. Untagged frames that enter the switch on interface ge-0/0/1 will be dropped.
- D. The phone will not be able to communicate over the network.
Answer: B
NEW QUESTION # 71
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. HTTPS is the default protocol for a captive portal.
- B. A captive portal can be bypassed using an allowlist command containing a device's IP address.
- C. All Web browser requests are redirected to the captive portal until authentication is successful.
- D. When enabled, a captive portal must be applied to each individual interface.
Answer: C
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 # 72
You want to implement an RP in your PIM sparse mode environment, you are considering the advantages and disadvantages of the various RP election methods.
In this scenario, which three implementation guidelines are correct? (Choose three.)
- A. The auto-RP method includes the ability to maintain a backup RP.
- B. The static method requires configuration on all devices in the PIM domain.
- C. With the bootstrap method, the primary criterion for electing a BSR is priority value.
- D. When multiple election methods are implemented on a device, the static method is preferred.
- E. The auto-RP method requires using two PIM dense mode groups from the 323/8 range.
Answer: A,C,E
NEW QUESTION # 73
Your network is multihomed to two ISPs. The BGP sessions are established; however, the ISP peers are not receiving any routes.
Which two statements are correct about troubleshooting your configuration? (Choose two.)
- A. Verity that the multihop settings are configured on your router.
- B. Verify the export policies on your router.
- C. Verify that the BGP routes are active in your routing table.
- D. Verify the import policies on your router.
Answer: A,B
NEW QUESTION # 74
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-peer
- B. internet
- C. no-advertise
- D. no-export
Answer: D
Explanation:
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
NEW QUESTION # 75
Referring to the exhibit, which TTL value will be sent to the LLDP neighbors?
- A. 200 seconds
- B. 120 seconds
- C. 90 seconds
- D. 400 seconds
Answer: B
NEW QUESTION # 76
You are troubleshooting a BGP connection.
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. The ge-0/0/1 interface is disabled.
- B. The 192.168.1.5 peer has a misconfigured MD5 key.
- C. Packet fragmentation is preventing the session from establishing.
- D. The 192.168.1.4 peer has a misconfigured autonomous system number.
Answer: B,D
NEW QUESTION # 77
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