NEW QUESTION NO: 10

The VCF shown in the exhibit is not functioning correctly.
What must you do to get the VCF to function properly?
A. Turn on mixed fabric mode for all devices.
B. Deactivate mixed fabric mode for all devices.
C. Set Member 1 to the backup RE role.
D. Set Member 0 to the VC route mode.
Answer: A
Explanation/Reference:
Reference: https://www.juniper.net/documentation/en_US/junos/topics/concept/virtual-chassis-ex-qfx- series-mixed-understanding.html

NEW QUESTION NO: 11
You are establishing an IP Fabric where your QFX10002-72Q spine devices are connecting to leaf devices. Each leaf is a Virtual Chassis comprised of ten EX4300s.
What is the maximum number of leaf devices supported in this scenario?
A. 36
B. 18
C. 16
D. 10
Answer: D
Explanation/Reference:
Reference: http://www.juniper.net/assets/uk/en/local/pdf/whitepapers/2000597-en.pdf
"up to 128 satellite devices" --- where each EX4300 VC = 10 devices; 128 / 10 = 12 max, closest answer is D: 10.

NEW QUESTION NO: 12

You are deploying a VXLAN using EVPN signaling overlay network. PE1 and PE2 are multihomed to the connected CE device. You notice that the traffic is not load-balancing as expected.
Referring to the exhibit, which two actions will solve this problem? (Choose two.)
A. Set the route distinguisher on PE2 to 11.11.11.11:100.
B. Set the LACP system ID on PE2 to 00:00:00:00:00:01.
C. Set the ESI on both devices to 00:00:00:00:00:00:00:00:00:00.
D. Set the ESI on PE2 to 00:11:11:11:11:11:11:11:11:11.
Answer: B,D
Explanation/Reference:
Reference: https://www.juniper.net/documentation/en_US/junos/topics/concept/evpn-bgp-multihoming- overview.html
Reference: https://tgregory.org/2016/06/21/evpn-all-active-multihoming/

NEW QUESTION NO: 13
In a preprovisioned mixed Virtual Chassis, which statement is correct about converting a 40Gbps QSFP+ to a Virtual Chassis port in an EX4300?
A. LLDP is enabled on that interface.
B. LLDP is disabled on that interface.
C. One end of the link is configured as a Virtual Chassis port.
D. Both ends of the link have the default configuration.
Answer: D
Explanation/Reference:
Reference: https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/virtual-chassis- qfx-series-cli.html

NEW QUESTION NO: 14
What is the endpoint of a VXLAN tunnel?
A. VTEP
B. DLCI
C. VCF
D. LSR
Answer: A

NEW QUESTION NO: 15
What are two methods used to scale an IBGP IP Fabric? (Choose two.)
A. route reflection
B. confederations
C. spanning tree
D. redundant trunk groups
Answer: A,B

NEW QUESTION NO: 16
Which three BGP messages pass EVPN information between devices? (Choose three.)
A. open messages
B. update messages
C. notification messages
D. keepalive messages
E. route-refresh messages
Answer: A,B,E
Explanation/Reference:
Explanation:
A - BGP open messages contain information used to negotiate the establishment of sessions but do not contain route information itself. They may contain information such as 'I can exchange EVPN AFI x/SAFI y NLRI with you', but not EVPN information itself.
B - BGP update messages can contain EVPN NLRI information. This is the 'routing information' itself.
NOT C - BGP notification messages indicate error conditions and contain basic error codes but no routing information. Technically they could refer to an error relating to EVPN, however this is not a good fit for the question being asked.
NOT D - BGP keepalive messages are always 19 bytes and uniform; no NLRI information.
E - A BGP speaker can send a ROUTE-REFRESH message to request the receiver re-sends their previously-sent BGP updates which, as per C, can include EVPN NLRI information.

NEW QUESTION NO: 17
You created an IP Fabric based on IBGP. You noticed that ECMP load sharing is not working.
In this scenario, what is the problem?
A. Each member of the IP Fabric needs a different autonomous system number.
B. BGP route reflectors only reflect the best route.
C. ECMP load sharing is only supported on 40GbE and 100GbE interfaces.
D. A route input policy needs to be added on all non-route reflectors to allow ECMP.
Answer: B,D
Explanation/Reference:
Explanation:
NOT A - iBGP means by definition the same AS!
B - Because route-reflectors only advertise the best and active route, configuration changes are required to export multiple routes (where applicable); there are a few ways to do this - 'add path/multipath' or multiple RRs or multiple sessions with different policies, etc.
NOT C - False; ECMP works on any IP path regardless of interface speed.
D - Route reflector clients must also support ECMP in their import policies and their forwarding policies.

NEW QUESTION NO: 18

Referring to the exhibit, PE1 and PE2 are acting as MPLS Layer 3 VPN PEs to provide the DCI between DC1 and DC2, which are IP Fabrics. Leaf 1 and Leaf 2 are QFX5100 Series devices acting as VXLAN Layer 2 Gateways using EVPN signaling for the same VXLAN segment.
Which statement is correct about the Edge1 device in this scenario?
A. Edge1 must be configured for MP-BGP using EVPN signaling.
B. Edge1 must be configured for MP-BGP using L3VPN signaling.
C. Edge1 must be configured for BGP labeled unicast on its PE1-facing interface.
D. Edge1's routing table must contain an IP route to both Leaf1 and Leaf2.
Answer: A
Explanation/Reference:
Explanation:
Assumption here that the MPLS backbone network offers EVPN; this is the most fully-featured solution.
This could also be achieved via C; BGP-LU shared with the provider, basically extending MPLS down to the Edge1+2 routers; this is less 'risky' for the MPLS backbone operator. B and D are ignoring EVPN/ VXLAN components and refer to traditional Layer 3 IP routing.
Reference: https://www.juniper.net/documentation/en_US/junos/topics/concept/evpns-overview.html

NEW QUESTION NO: 19
An EX9200 switch is acting as a Layer 3 VXLAN gateway.
In this scenario. which action will allow you to communicate between two VLANs?
A. Configure L3 physical interfaces to connect the VXLANs.
B. Configure IRB interfaces to connect the VXLANs.
C. Configure LAG interfaces to connect the VXLANs.
D. Configure a VPLS instance.
Answer: B
Explanation/Reference:
Reference: (loosely) https://www.juniper.net/documentation/en_US/junos/topics/example/sdn-vxlan-ovsdb- inter-vxlan-routing-data-center-configuring.html

NEW QUESTION NO: 20

The exhibit shows an output from a QFX5100 Series switch serving as an MC-LAG peer.
Which two statements are true in this scenario? (Choose two.)
A. ae0.0 is functioning as an ICL.
B. et-0/0/51.0 is a standalone link and not part of an MC-AE bundle.
C. et-0/0/51.0 is a member link of qfx5100-1 within an MC-AE bundle.
D. ae1.0 is functioning as an ICL.
Answer: A,B
Explanation/Reference:
Reference: https://www.juniper.net/documentation/en_US/junos/topics/task/troubleshooting/ troubleshooting-mc-lag-qfx-series-cli.html
https://www.newpassleader.com/Juniper/JN0-680-exam-preparation-materials.html