[Oct 24, 2024] JN0-649 Test Prep Training Practice Exam Questions Practice Tests
Exam Questions Answers Braindumps JN0-649 Exam Dumps PDF Questions
NEW QUESTION # 12
The connection between DC1 and DC2 is routed as shown in the exhibit.
In this scenario, which statement is correct?
- A. An IP prefix route provides encoding for intra-subnet forwarding.
- B. L3VPN must be enabled to advertise reachability.
- C. Type 2 and Type 5 routes will be exchanged between DC1 and DC2.
- D. The border devices must be able to perform Layer 3 routing and provide IRB functionality.
Answer: D
Explanation:
https://www.juniper.net/documentation/us/en/software/junos/evpn-vxlan/topics/concept/evpn- route-type5-understanding.html
NEW QUESTION # 13
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 IP address information.
- D. Type 5 routes carry replication information.
- E. Type 2 routes carry endpoint MAC address information.
Answer: A,C,E
Explanation:
* Understanding EVPN Route Types:
* EVPN (Ethernet VPN) is used for providing Ethernet multipoint services over MPLS or VXLAN networks.
* EVPN Route Types:
* Type 1 (Ethernet Auto-Discovery Route): Used for auto-discovery of PEs and for detecting multi-homed devices.
* Type 2 (MAC/IP Advertisement Route):
* Carries endpoint MAC address information.
* Carries endpoint IP address information.
* Facilitates MAC learning and IP-to-MAC binding distribution.
* Type 3 (Inclusive Multicast Route):
* Carries replication information.
* Used for forwarding multicast and broadcast traffic.
* Type 5 (IP Prefix Route): Carries IP prefixes for inter-subnet connectivity, but not replication information.
* Verification:
* Type 2 routes are crucial for distributing MAC and IP information about endpoints.
* Type 3 routes are used to manage multicast traffic effectively.
References:
* Juniper EVPN Configuration Guide
* Understanding EVPN Route Types
NEW QUESTION # 14
Your EX Series switch has IP telephones and computers connected to a single switch port. You are considering implementing the voice VLAN feature to help with this setup. In this scenario, which two statements are correct? (Choose two.)
- A. The interfaces must be configured as access ports.
- B. Assigning the incoming voice and data traffic to separate VLANs enables the ability to prioritize the traffic using CoS.
- C. The voice VLAN feature must be used with LLDP-MED to associate VLAN ID and 802.1p values with the traffic.
- D. The voice VLAN feature will enable incoming tagged data and voice traffic to be associated with separate VLANs.
Answer: A,C
Explanation:
EX Series switches can accommodate an IP telephone and end host connected to a single switch port. In such a scenario, voice and data traffic must be separated into different broadcast domains, or VLANs. One method for accomplishing this is by configuring a voice VLAN, which enables access ports to accept untagged data traffic as well as tagged voice traffic from IP phones, and associate each type of traffic with separate and distinct VLANs. Voice traffic (tagged) can then be treated differently, generally with a higher priority than data traffic (untagged).
NEW QUESTION # 15
Which three configuration parameters must match on all switches within the same MSTP region? (Choose three.)
- A. revision level
- B. VLAN to instance mapping
- C. configuration name
- D. region name
- E. bridge priority
Answer: A,B,C
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 # 16
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. The BGP neighbor can advertise L3 VPN related routes.
- B. The BGP neighbor can advertise EVPN related routes.
- C. The BGP neighbor cannot advertise EVPN related routes.
- D. The BGP neighbor cannot advertise L3 VPN related routes.
Answer: A,B
NEW QUESTION # 17
Which two statements about MVRP are correct? (Choose two.)
- A. MVRP monitors interfaces using VSTP and dynamically creates VLANs as necessary
- B. MVRP is enabled by adding trunk ports under the [edit protocols mvrp] hierarchy.
- C. MVRP can propagate dynamic VLANs created on one switch to another switch
- D. MVRP PDUs are sent to other switches as periodic intervals.
Answer: B,D
NEW QUESTION # 18
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 interface ge-0/0/3 to a mode trunk to assign the VLANs.
- B. 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.
- 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 VSTP on interface ge-0/0/1 to assign the VLANs.
Answer: A
NEW QUESTION # 19
You have scheduled maintenance operations for one of the devices in your OSPF network.
Referring to the exhibit, which three statements are correct? (Choose three.)
- A. R1 does not send or receive transit traffic during the maintenance window even if no alternative paths exist to the given destination.
- B. R1 participates in OSPF routing but does not send or receive transit traffic.
- C. Any traffic destined for networks that terminate on R1 will still be forwarded to R1.
- D. The metrics for all transit interfaces on R1 is set to the maximum value of 65,535.
- E. R1 does not participate in OSPF routing.
Answer: B,C,D
NEW QUESTION # 20
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. single-secure supplicant mode
- B. MAC authentication mode
- C. multiple supplicant mode
- D. single supplicant mode
Answer: A
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 # 21
Referring to the exhibit, anycast RP is implemented to ensure multicast service availability. The source is currently sending multicast traffic using group 239.1.1.1 and R3 is receiving PIM register messages, but R2 does not have active source information.
In this scenario, what are two methods to receive the active source information on R2? (Choose two.)
- A. Configure an MSDP protocol between R2 and R3.
- B. Configure an RP set in PIM on R2 and R3, allowing the RPs to forward PIM register messages to the other RPs in the set.
- C. Configure an MSDP protocol between R1 and R2.
- D. Configure an RP set in PIM on R1, allowing R1 to forward PIM register messages to R2 and R3 in the set.
Answer: A,B
Explanation:
* Anycast RP uses Multicast Source Discovery Protocol (MSDP) to discover and maintain a consistent view of the active sources. nclude the anycast-pim statement to configure anycast RP without MSDP (for example, if IPv6 is used for multicasting). The other RP routers that share the same IP address are configured using the rp-set statement.
https://www.juniper.net/documentation/us/en/software/junos/multicast/topics/topic-map/mcast-pim-anycas
NEW QUESTION # 22
You are troubleshooting connectivity between an EVPN spine switch configured as a route reflector and a leaf node with an IP address of 10.30.100.6.
Referring to the exhibit, what is the problem?
- A. The neighbor 10.30.100.6 statement is missing from spine1's configuration.
- B. The neighbor 10.30.100.3 statement is missing from leaf1's configuration.
- C. The leaf node is not configured for the family evpn NLRI.
- D. The spine node is not configured for the family inet NLRI.
Answer: D
NEW QUESTION # 23
Referring to the exhibit, which LSA type is used to advertise 192.168.1.0/24 to R5?
- A. Type 7
- B. Type 4
- C. Type 5
- D. Type 3
Answer: C
Explanation:
Area-1 has no external connections. However, Area-1 has static route (172.16.31.0/24) that are not internal OSPF route. You can limit the external route advertisements to the area and advertise the static routes by designating the area an NSSA. In an NSSA, the ASBR (vMX1) generates NSSA external (Type 7) LSAs and floods them into the NSSA, where they are contained.
Type-7 LSAs allow an NSSA to support the presence of ASBR and their corresponding external routing information. The ABR (vMX2) converts Type-7 LSAs into Type-5 External LSAs and leaks them to the other areas, but external routes from other areas are not advertised within the NSSA.
An admin should check this and change it
https://www.packetswitch.co.uk/configuring-junos-ospf-stub-and-nssa-areas/
https://www.juniper.net/documentation/us/en/software/junos/ospf/topics/ref/statement/nssa-edit-protocols-ospf.html
NEW QUESTION # 24
A customer requires that the switch responds to an ARP request only if the source and target IP address are on different subnets.
Referring to the Exhibit, how would you accomplish this task?
- A. Create a static ARP entry for the host.
- B. Enable the no-gratuitous-arp request command under the interface hierarchy.
- C. Change the proxy ARP parameter setting to restricted.
- D. Remove the proxy ARP setting and clear the entry.
Answer: C
NEW QUESTION # 25
Which three MSTP parameters must match on all switches in the same MST region? (Choose three.)
- A. forwarding delay
- B. MSTI-to-VLAN mapping
- C. configuration name
- D. bridge priority
- E. revision number
Answer: C,D,E
NEW QUESTION # 26
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. When multiple election methods are implemented on a device, the static method is preferred.
- B. The static method requires configuration on all devices in the PIM domain.
- C. The auto-RP method requires using two PIM dense mode groups from the 323/8 range.
- D. The auto-RP method includes the ability to maintain a backup RP.
- E. With the bootstrap method, the primary criterion for electing a BSR is priority value.
Answer: C,D,E
NEW QUESTION # 27
Referring to the exhibit, which statement is correct?
- A. The route is learned from three different neighbors.
- B. The route is learned from only one neighbor.
- C. The route is learned from a multipath BGP session.
- D. The route is learned from a multihop BGP session.
Answer: B
NEW QUESTION # 28
You have scheduled maintenance operations for one of the devices in your OSPF network.
Referring to the exhibit, which three statements are correct? (Choose three.)
- A. R1 does not send or receive transit traffic during the maintenance window even if no alternative paths exist to the given destination.
- B. R1 participates in OSPF routing but does not send or receive transit traffic.
- C. Any traffic destined for networks that terminate on R1 will still be forwarded to R1.
- D. The metrics for all transit interfaces on R1 is set to the maximum value of 65,535.
- E. R1 does not participate in OSPF routing.
Answer: B,C,D
NEW QUESTION # 29
What are three well-known mandatory BGP attributes? (Choose three.)
- A. AS-path
- B. origin
- C. MED
- D. community
- E. next-hop
Answer: A,B,E
NEW QUESTION # 30
What are two supported PoE management modes? (Choose two.)
- A. mixed
- B. class
- C. static
- D. standalone
Answer: B,C
NEW QUESTION # 31
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 2 withdrawal messages from router D.
- D. Router E receives Type 1 withdrawal messages from router C.
Answer: B
NEW QUESTION # 32
You have scheduled maintenance operations for one of the devices in your OSPF network.
Referring to the exhibit, which three statements are correct? (Choose three.)
- A. R1 does not send or receive transit traffic during the maintenance window even if no alternative paths exist to the given destination.
- B. R1 participates in OSPF routing but does not send or receive transit traffic.
- C. Any traffic destined for networks that terminate on R1 will still be forwarded to R1.
- D. The metrics for all transit interfaces on R1 is set to the maximum value of 65,535.
- E. R1 does not participate in OSPF routing.
Answer: B,C,D
Explanation:
- Configure the local routing device so that it appears to be overloaded. You might do this when you want the routing device to participate in OSPF routing, but do not want it to be used for transit traffic. - Traffic destined to directly attached interfaces continues to reach the routing device. - When configured, the transit interface metrics are set to the maximum value of 65535.
https://www.juniper.net/documentation/us/en/software/junos/ospf/topics/ref/statement/overload-edit-protocols-os
https://www.juniper.net/documentation/us/en/software/junos/ospf/topics/topic-map/configuring-ospf-route-contr
NEW QUESTION # 33
You have a workstation and an IP phone that connect to the same physical port on your Juniper switch. Which statement is true?
- A. You must configure two logical interfaces on the switch port.
- B. The access port can be configured to accept tagged and untagged traffic.
- C. The switch port must be configured as a trunk port.
- D. The workstation and the phone both must send tagged traffic to the switch.
Answer: B
NEW QUESTION # 34
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 IP address information.
- D. Type 5 routes carry replication information.
- E. Type 2 routes carry endpoint MAC address information.
Answer: A,C,E
Explanation:
The EVPN control plane advertises the following types of information:
Route type 1 - This is an Ethernet Auto-Discovery (EAD) route type used to advertise Ethernet segment identifier, Ethernet Tag ID, and EVPN instance information. EAD route advertisements may be sent for each EVPN instance or for each Ethernet segment.
Route type 2 - This advertises endpoint reachability information, including MAC and IP addresses of the endpoints or VTEPs.
Route type 3 - This performs multicast router advertisement, announcing the capability and intention to use ingress replication for specific VNIs.
Route type 4 - This is an Ethernet Segment route used to advertise the Ethernet segment identifier, IP address length, and the originating router's IP address.
Route type 5 - This is an IP prefix route used to advertise internal IP subnet and externally learned routes to a VXLAN network.
NEW QUESTION # 35
Referring to the exhibit, ServerA sends a single IP packet destined to 10.0.0.127.
Which two statements correctly describe the behavior of the resulting outbound VXLAN packets that contain the original packet destined to 10.0.0.127? (Choose two.)
- A. Router D will not replicate and send a copy of the received VXLAN packet to router E.
- B. Router E will replicate and send a copy of the received VXLAN packet to router D.
- C. Router C will send a VXLAN packet destined only to router D and router E.
- D. Router C will send a single VXLAN packet to one remote VTEP.
Answer: A,C
NEW QUESTION # 36
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