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| From | Number of exam questions | Exam name | Exam code |
| Lead4Pass | 13 | Enterprise Routing and Switching Professional (JNCIP-ENT) | JN0-649 |
QUESTION 1
Which two statements are correct regarding the behavior shown in the exhibit? (Choose two.)
A. The ge-1/1/0 interface is configured as secondary for Area 0.
B. The router is an ABR.
C. The router is not an ABR.
D. The ge-1/1/0 interface is configured as secondary for Area 100.
Correct Answer: BD
QUESTION 2:
You are deploying IP phones in your enterprise networks. When plugged in, the IP phones must automatically negotiate
the power requirements for the new connection with the EX Series switches. In this scenario, which protocol should be
used to enable this behavior?
A. CDP
B. MP-BGP
C. LLDP-MED
D. LLDP
Correct Answer: C
QUESTION 3:
Referring to the exhibit, which LSA type is used to advertise 192.168.1.0/24 to R5?
A. Type 5
B. Type 4
C. Type 3
D. Type 7
Correct Answer: A
Area-1 has no external connections. However, Area-1 has a static route (172.16.31.0/24) that is not an 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
QUESTION 4:
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 participate in OSPF routing.
B. Any traffic destined for networks that terminate on R1 will still be forwarded to R1.
C. The metrics for all transit interfaces on R1 are set to the maximum value of 65,535.
D. R1 participates in OSPF routing but does not send or receive transit traffic.
E. R1 does not send or receive transit traffic during the maintenance window even if no alternative paths exist to the
given destination.
Correct Answer: BCD
QUESTION 5:
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 cannot advertise EVPN-related routes.
C. The BGP neighbor can advertise EVPN-related routes.
D. The BGP neighbor cannot advertise L3 VPN-related routes.
Correct Answer: AC
QUESTION 6:
A Layer 2 connection does not expand across data centers. The IP subnet in a Layer 2 domain is confined within a
single data center. Which EVPN route type is used to communicate prefixes between the data centers?
A. Type 1
B. Type 2
C. Type 4
D. Type 5
Correct Answer: D
QUESTION 7:
You are asked to configure an802.1X solution that supports dynamic VLAN assignment.
In this scenario, which two modes support using vendor-specific attributes (VSAs)? (Choose two.)
A. static MAC bypass mode
B. single-secure supplicant mode
C. multiple supplicant mode
D. single supplicant mode
Correct Answer: BD
QUESTION 8:
Your network has an unmanaged switch between the hosts and your EX Series switch. After the traffic enters the
Series switch, each host must be on a separate VLAN.
How would you accomplish this task?
A. 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.
B. 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.
C. Configure interface ge-0/0/3 to a mode trunk to assign the VLANs.
D. Configure VSTP on interface ge-0/0/1 to assign the VLANs.
Correct Answer: C
QUESTION 9:
Your enterprise network uses routing instances to support multitenancy. Your Junos devices use BGP to peer to
multiple BGP devices. You must ensure that load balancing is achieved within the routing instance. Which two
statements would accomplish this task? (Choose two.)
A. Configure the multipath option at the [edit protocols bgp group neighbor] hierarchy.
B. Configure the multipath option at the [edit protocols bgp group] hierarchy.
C. Configure a load-balance per-packet policy and apply it at the [edit routing-options forwarding-table] hierarchy.
D. Configure the multipath option at the [edit routing-instances routing-options] hierarchy.
Correct Answer: BC
Fortunately, the Juniper Networks BGP implementation supports the notion of a bandwidth community. This extended community encodes the bandwidth of a given next hop, and when combined with multipath, the load-balancing algorithm
distributes flows across the set of next hops proportional to their relative bandwidths.
Put another way, if you have a 10-Mbps and a 1-Mbps next hop, on average nine flows will map to the high-speed next hop for everyone that uses the low speed.
Use of the BGP bandwidth community is supported only with per-packet load balancing.
The configuration task has two parts:
Configure the external BGP (EBGP) peering sessions, enable multipath, and define an import policy to tag routes with a
bandwidth community that reflects link speed.
Enable per-packet (really per-flow) load balancing for optimal distribution of traffic.
QUESTION 10:
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, a join message is sent from R1 to R3.
B. Before the formation of the rendezvous-point tree, an IGMP is sent from the Receiver to R1.
C. Before the formation of the rendezvous-point tree, an IGMP is sent from the Source to R5.
D. Before the formation of the rendezvous-point tree, a join message is sent from R1 to R5.
Correct Answer: BC
QUESTION 11:
Referring to the outputs shown in the exhibit, which two statements are correct about the IS-IS adjacency? (Choose
two.)
A. R1 is configured to participate in both Level 1 and Level 2.
B. R2 is configured to participate in both Level 1 and Level 2.
C. R1 is configured to participate in Level 2 only.
D. R2 is configured to participate in Level 2 only.
Correct Answer: AD
QUESTION 12:
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 time out 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.
Correct Answer: A
Once a route is accepted, no other terms in the routing policy are evaluated.
QUESTION 13:
Referring to the exhibit, which two statements are correct? (Choose two.)
A. The maximum wattage that this switch can allocate to attached Ethernet devices is 100 watts.
B. If the total power consumption exceeds 90 watts, the ge-0/0/11 interface will continue to receive power.
C. PoE is not enabled on the ge-0/0/0 interface.
D. The ge-0/0/10 interface supports PoE+.
Correct Answer: AD
POE is enabled in the interface ge-0/0/0 but nothing is connected to it. the switch is in AT mode (poe+) and the interface
ge-0/0/11 supports poe+ judging by maximum wattage
…
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