[Dec-2024] JN0-649 exam torrent Juniper study guide
Use Valid New JN0-649 Test Notes & JN0-649 Valid Exam Guide
NEW QUESTION # 10
You recently committed a change to a router to reject OSPF routes sourced from area 10. However, you are still seeing area 10 routes in the routing table.
Referring to the exhibit, which statement is correct?
- A. The OSPF protocol is first matched by find-ospf and accepted.
- B. The routes only timeout after 24 hours.
- C. The routes remain in the table until the device is rebooted.
- D. The routes remain in the table until the routing daemon is restarted.
Answer: A
Explanation:
Once a route is accepted, no other terms in the routing policy are evaluated.
NEW QUESTION # 11
You want to provide Layer 2 connectivity between campus sites using Ethernet switches through a metro Ethernet service provider who is using Q-in-Q tagging on their network.
Referring to the exhibit, what are two design considerations in this environment? (Choose two.)
- A. Each campus switch shown must have a C-Tag 300 configured.
- B. Each campus switch shown must have S-Tag 300 configured.
- C. L2PT is required on the SP network to support the spanning tree protocol.
- D. VXLAN could be implemented on your network across this service provider network.
Answer: C,D
Explanation:
* Understanding the Problem:
* The requirement is to provide Layer 2 connectivity between campus sites using Ethernet switches through a metro Ethernet service provider who is using Q-in-Q tagging.
* Design Considerations:
* VXLAN Implementation:
* VXLAN (Virtual Extensible LAN) can be used to extend Layer 2 networks over Layer 3 networks. It is often used to provide scalability and flexibility in modern data center networks. In this case, VXLAN could be used to encapsulate Layer 2 frames within UDP packets, allowing them to be transported over the service provider's network.
* S-Tag Configuration:
* Q-in-Q tagging, also known as 802.1ad, involves an outer tag (S-Tag) and an inner tag (C-Tag). The service provider network uses the S-Tag to identify and segregate customer traffic. Therefore, each campus switch must have the correct S-Tag (300 in this case) configured to ensure the service provider can correctly handle and route the traffic.
References:
* Juniper Networks: Understanding VXLAN
* Configuring Q-in-Q Tagging
NEW QUESTION # 12
Which three statements are correct about EVPN route types? (Choose three.)
- A. Type 3 routes carry replication information.
- B. Type 1 routes carry endpoint MAC address information.
- C. Type 2 routes carry endpoint MAC address information.
- D. Type 5 routes carry replication information.
- E. Type 2 routes carry endpoint IP address information.
Answer: B,C,E
NEW QUESTION # 13
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 2 will be active because of the router ID.
- B. Route 1 will be active because of the router ID.
- C. Route 1 will be active because of the peer IP address.
- D. Route 2 will be active because of the peer IP address.
Answer: A
NEW QUESTION # 14
You are deploying IP phones in your enterprise networks. When plugged in, the IP phones must be automatically provided with the correct VLAN ID needed for sending voice traffic to the EX Series switches.
In this scenario, which two solutions are required to accomplish this task? (Choose two.)
- A. Enable LLDP-MED on appropriate access interfaces.
- B. Create two VLANs and assign them as VLAN members to the appropriate access interfaces.
- C. Use LLDP on appropriate interfaces.
- D. Enable the voice VLAN feature with the appropriate access interfaces and VLAN ID for voice traffic.
Answer: A,D
NEW QUESTION # 15
Referring to the exhibit, a PIM-SM network is set up to enable communication between multicast devices.
Which two statements are true? (Choose two.)
- A. Before the formation of the rendezvous-point tree, an IGMP is sent from the Source to R5.
- B. Before the formation of the rendezvous-point tree, a join message is sent from R1 to R3.
- C. Before the formation of the rendezvous-point tree, a join message is sent from R1 to R5.
- D. Before the formation of the rendezvous-point tree, an IGMP is sent from the Receiver to R1.
Answer: A,D
NEW QUESTION # 16
Which EVPN route type is used for fast convergence and for advertising the split horizon label?
- A. Type 4
- B. Type 5
- C. Type 1
- D. Type 2
Answer: C
NEW QUESTION # 17
Referring to the exhibit, how will router E quickly learn that the remote MAC addresses are no longer reachable through the router attached to the failed link?
- A. Router E receives Type 2 withdrawal messages from router C.
- B. Router E receives Type 1 withdrawal messages from router D.
- C. Router E receives Type 1 withdrawal messages from router C.
- D. Router E receives Type 2 withdrawal messages from router D.
Answer: B
NEW QUESTION # 18
Which two statements are correct regarding the behavior shown in the exhibit? (Choose two.)
- A. The router is not an ABR.
- B. The router is an ABR.
- C. The ge-1/1/0 interface is configured as secondary for Area 0.
- D. The ge-1/1/0 interface is configured as secondary for Area 100.
Answer: B,D
NEW QUESTION # 19
Which two statements are true about IS-IS levels? (Choose two.)
- A. Level 1 systems use a default route to reach AS external routes located in other areas.
- B. Level 2 systems do not advertise Level 2 routes into a Level area by default.
- C. Level 1 system only from adjacencies with other systems that have different area IDs.
- D. Level 2 systems must use the loopback address as a part of the ISO network address.
Answer: A
NEW QUESTION # 20
You are asked to establish interface level authentication for users connecting to your network.
You must ensure that only corporate devices, identified by MAC addresses, are allowed to connect and authenticate. Authentication must be handled by a centralized server to increase scalability. Which authentication method would satisfy this requirement?
- A. captive portal
- B. MAC RADIUS
- C. 802.1X with multiple supplicant mode
- D. 802.1X with single-secure supplicant mode
Answer: B
Explanation:
https://www.juniper.net/documentation/us/en/software/junos/user-access/topics/topic-map/mac- radius-authentication-switching-devices.html You can configure MAC RADIUS authentication on an interface that also allows 802.1X authentication, or you can configure either authentication method alone.
If both MAC RADIUS and 802.1X authentication are enabled on the interface, the switch first sends the host three EAPoL requests to the host. If there is no response from the host, the switch sends the host's MAC address to the RADIUS server to check whether it is a permitted MAC address. If the MAC address is configured as permitted on the RADIUS server, the RADIUS server sends a message to the switch that the MAC address is a permitted address, and the switch opens LAN access to the nonresponsive host on the interface to which it is connected.
NEW QUESTION # 21
Your network has an unmanaged switch between the hosts and your EX Series switch. After the traffic enters the EX Series switch, each host must be on a separate VLAN.
How would you accomplish this task?
- A. Configure VSTP on interface ge-0/0/1 to assign the VLANs.
- B. Configure interface ge-0/0/3 to a mode trunk to assign the VLANs.
- C. Configure an output firewall filter on interface ge-0/0/1 to match the destination MAC or IP address of the hosts to assign the VLANs.
- D. Configure an input firewall filter on interface ge-0/0/3 to match the source MAC or IP address of the hosts to assign the VLANs.
Answer: B
NEW QUESTION # 22
Referring to the exhibit, which statement is true?
- A. R1 is an ASBR.
- B. R1 has the B bit set.
- C. R1 is an ABR.
- D. R1 is a backbone router.
Answer: A
NEW QUESTION # 23
Which two statements are correct about the deployment of EVPN-VXLAN on QFX Series devices? (Choose two.)
- A. Type 1 route advertisements always have the single-active flag set to 1.
- B. Type 1 route advertisements always have the single-active flag set to 0.
- C. Junos OS supports underlay replication for BUM traffic forwarding.
- D. Junos OS supports ingress replication for BUM traffic forwarding.
Answer: B,D
Explanation:
BUM traffic handling is given to the overlay network by configuring VXLAN ingress-node- replication instead of multicast overlay In an EVPN-VXLAN environment, EVPN multihoming active-active mode is used instead of MC- LAG for redundant connectivity between hosts and leaf devices.
In active-active mode, each of the multihomed PE device advertises a mandatory autodiscovery route per Ethernet segment as in the active-standby state. However, in the active-active state, the autodiscovery route per Ethernet segment is modified such that the active-standby bit carried in the MPLS extended community is cleared to indicate that the active-active mode is in operation.
NEW QUESTION # 24
Your enterprise network is running BGP VPNs to support multitenancy. Some of the devices with which you peer BGP do not support the VPN NLRI. You must ensure that you do not send BGP VPN routes to the remote peer.
Which two configuration steps will satisfy this requirement? (Choose two.)
- A. Configure a route reflector for the VPN NLRI.
- B. Configure the apply-vpn-export feature on the local BGP peer.
- C. Configure an import policy on the remote peer to reject the routes when they are received.
- D. Configure an export policy on the local BGP peer to reject the VPN routes being sent to the remote peer.
Answer: B,D
NEW QUESTION # 25
You have configured CoS on a Junos device. A packet is classified as best effort by a behavior aggregate (BA) classifier, and as expedited forwarding by a multifield (MF) classifier.
Which statement is true in this scenario?
- A. The packet will be placed in a queue associated with the BA classifier.
- B. The packet will be placed into the queue which is least congested.
- C. The packet will be placed into the queue that has the most bandwidth assigned to it.
- D. The packet will be placed in a queue associated with the MF classifier.
Answer: D
Explanation:
https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/cos-configuring- multifield-classifiers.html
>> "If you configure both a behavior aggregate (BA) classifier and a multifield classifier, BA classification is performed first; then multifield classification is performed. If they conflict, any BA classification result is overridden by the multifield classifier."
NEW QUESTION # 26
You enable the Multiple VLAN Registration Protocol (MVRP) to automate the creation and management of virtual LANs.
Which statement is correct in this scenario?
- A. When enabled, MVRP affects all interfaces.
- B. Timers dictate when link state changes are propagated.
- C. The forbidden mode does not register or declare VLANs.
- D. MVRP works with RSTP and VSTP.
Answer: A
NEW QUESTION # 27
Which three databases are used by the Dijkstra algorithm? (Choose three.)
- A. Configuration database
- B. Link State Database
- C. Tree database
- D. Candidate database
- E. MAC database
Answer: B,C,D
NEW QUESTION # 28
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