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NEW QUESTION NO: 8
You are deploying a spine-and-leaf IP Fabric in your data center using EBGP.
In this scenario, which three statements are true? (Choose three.)
A. Each device should you use a different autonomous system number.
B. Each leaf must peer to each spine.
C. Each device should also run an IGP to advertise loopback interfaces.
D. EBGP does not require a next-hop self-policy.
E. Each leaf must peer to every other leaf.
Answer: A,B,D
Explanation/Reference:
Reference: http://www.juniper.net/us/en/local/pdf/whitepapers/2000565-en.pdf
NEW QUESTION NO: 9
You are building a mixed-mode Virtual Chassis with two QFX5100-24Qs, four QFX3500-48s, two EX4600-
40Fs and two EX4300-48Ts. The Virtual Chassis will not provision.
In this scenario, which statement is correct?
A. QFX3500s are not allowed in mixed mode.
B. EX4600s are only allowed with EX4300s.
C. EX4600s must be preprovisioned as the master and backup.
D. Mixed-mode Virtual Chassis only allows for eight members.
Answer: B
Explanation/Reference:
Reference: https://www.juniper.net/documentation/en_US/junos/topics/concept/virtual-chassis-ex-qfx- series-mixed-understanding.html#jd0e133
NEW QUESTION NO: 10
Which two statements are correct when performing a unified ISSU? (Choose two.)
A. The master Routing Engine and backup Routing Engine must be running the same software version before you can perform a unified ISSU.
B. Unicast RPF-related statistics are not saved across a unified ISSU, and the unicast RPF counters are reset to zero during a unified ISSU.
C. Unicast RPF-related statistics are saved across a unified ISSU, and the unicast RPF counters are not reset to zero during a unified ISSU.
D. The backup Routing Engine must be running the most recent software version before you can perform a unified ISSU.
Answer: A,B
Explanation/Reference:
Reference: https://www.juniper.net/documentation/en_US/junos/topics/reference/requirements/issu- system-requirements.html
NEW QUESTION NO: 11
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: 12
You are having management connectivity problems with a mixed-mode Virtual Chassis.
Which statement is correct in this scenario?
A. The master RE's me0 MAC address should match the MAC address of the vme.
B. Each member's me0 MAC address should match the MAC address on the vme.
C. Each member's me0 MAC address should not match the MAC address of the vme.
D. The current me0 MAC address should match the MAC address of the vme.
Answer: A
Explanation/Reference:
Reference: https://kb.juniper.net/InfoCenter/index?page=content&id=KB25724
NEW QUESTION NO: 13
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: 14
Referring to the exhibit, R1 and R2 are QFX5100s and are acting as VXLAN Layer 2 Gateways for VLAN
100 using PIM-SIM signaling. R1 currently has an entry for Host B in its MAC table.
What will R1 do in response to receiving the ARP packet from Host A?
A. R1 will send a VXLAN packet over the (S,G) tree built to R2.
B. R1 will send a VXLAN packet over the RP-based multicast tree.
C. R1 will send an (S,G) PIM Join message to R2.
D. R1 will send a (*.G) PIM Join message to the RP.
Answer: A
Explanation/Reference:
Explanation:
It can only have learned Host B MAC via an established tree with R2, meaning A or B is the answer.
Answer is A, (S,G) tree, because the RP-based tree transitioned to (S,G) tree once the Host B MAC was learned.
NEW QUESTION NO: 15
Spine 1 and Spine 2 are MX Series devices configured to act as redundant VXLAN Layer 3 Gateways using the virtual-gateway-address 10.0.1.254statement,
Referring to the exhibit, how will a spine node react to receiving the ARP request from Host A?
A. The spine node will send an ARP reply specifying the MAC address of its IRB interface.
B. The spine node will send an ARP reply specifying a virtual MAC address of 00:00:5e:00:01:01.
C. The spine node will send an ARP reply specifying the MAC address of its LT interface.
D. The spine node will send an ARP reply specifying the MAC address of its leaf-facing interface.
Answer: A
Explanation/Reference:
Reference: https://www.juniper.net/documentation/en_US/release-independent/solutions/information- products/pathway-pages/solutions/l3gw-vmto-evpn-vxlan-mpls.pdf
There will be an inner MAC which is the virtual MAC for the gateway; the IRB MAC is treated as equivalent.
NEW QUESTION NO: 16
Your server administrator asks you to preserve the inner VLAN tags of the frames coming from a Layer 2 VXLAN Gateway of the EVPN-enabled segment.
Which two parameters must you add to the configuration to allow the VLAN tag to be passed? (Choose two.)
A. layer2-protocol-tunneling
B. decapsulate-accept-inner-vlan
C. dotlq-tunneling
D. encapsulate-inner-vlan
Answer: B,D
Explanation/Reference:
Reference: https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/ encapsulate-inner-vlan.html
Reference: https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/ decapsulate-accept-inner-vlan.html
NEW QUESTION NO: 17
Referring to the exhibit, R1 and R2 are QFX5100s and are acting as VXLAN Layer 2 Gateways for VLAN
100 using PIM-SM signaling. R2 currently has only the (*.G) state established for VNI 5100.
Which event will cause R2 to establish the (S,G) state for VNI 5100 using R1 as the multicast source?
A. when R2's VNI 5100 configuration is committed
B. when R2 receives broadcast, multicast, or unknown unicast from Host A
C. when R1 receives a known unicast Ethernet frame from Host A
D. when R2 first learns the MAC address of a locally attached host
Answer: C
NEW QUESTION NO: 18
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