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NEW QUESTION NO: 7
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: 8

Referring to the exhibit, what is the MAC address of the IRB interface on router PE1?
A. 2.91.223.216:100
B. 1:100::0::100::a
C. a8:d0:e5:54:0d:10
D. 2.10.255.0.1:100
Answer: C

NEW QUESTION NO: 9
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: 10

Referring to the exhibit, R1 and R2 are QFX5100s and are acting as VXLAN Layer 2 Gateways for VLAN
100 using PIM-SM signaling.
What will cause R2 to send a (*.G) PIM Join towards the RP?
A. R2 will send a (*.G) PIM Join when its VLAN 100 configuration is committed.
B. R2 will send a (*.G) PIM Join when it first learns the MAC address of a locally attached host.
C. R2 will send a (*.G) PIM Join when it receives broadcast, multicast, or unknown unicast traffic from Host B.
D. R2 will send a (*.G) PIM Join when it receives broadcast, multicast, or unknown unicast traffic from Host A.
Answer: A
Explanation/Reference:
Reference: https://www.juniper.net/documentation/en_US/junos/topics/concept/multicast-pim-sparse- characteristics.html
Explanation:
It's A because if you consider that Host B may send zero traffic whatsoever, how can Host A find Host B's MAC address? It would have to ARP for it. So, because Host B may lie dormant until Host A initiates communications, it is completely necessary for R2 to (*,G) PIM Join the VXLAN group for VLAN 100.
C is impossible before the (*,G), B and D are shades of the same chicken-and-egg scenario that makes A the only viable answer.

NEW QUESTION NO: 11

The MC-LAG group shown in the exhibit is providing high availability services for the directly connected servers.
Where does Juniper Networks recommend you provide the backup liveness detection?
A. on the ae2 interface
B. on the ICL-PL connection
C. on the ae1 interface
D. on the management interfaces
Answer: B
Explanation/Reference:
Reference: https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/ backup-liveness-detection-edit-protocols-iccp-peer-qfx-series.html
Reference: https://kb.juniper.net/InfoCenter/index?page=content&id=KB21824

NEW QUESTION NO: 12
You are asked to design a deployment plan for a large number of QFX Series switches using zero touch provisioning (ZTP). The ZTP deployment plan must ensure all switches are upgraded to the desired software version.
Which DHCP option are suboption combination would be used to accomplish this task?
A. DHCP options 66 with a supoption of 00
B. DHCP options 66 with a supoption of 03
C. DHCP options 43 with a supoption of 00
D. DHCP options 43 with a supoption of 03
Answer: C
Explanation/Reference:
Reference: https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/software-image- and-configuration-automatic-provisioning-confguring.html

NEW QUESTION NO: 13

Referring to the exhibit, VMs on Server-1 are sending traffic to VMs on Server-2. All VCPs in the VCF have
40Gbps of bandwidth available and automatic fabric trunking is bundling multiple VCPs together.
Which statement is correct in this scenario?
A. The traffic will load balance across the SW-1, SW-2, and SW-3 devices.
B. The traffic only takes the SW-4, SW-2, SW-5 path.
C. The traffic will load balance across the SW-1 and SW-2 devices.
D. The traffic only takes the SW-4. SW-1, SW-5 path.
Answer: A
Explanation/Reference:
Reference: https://www.juniper.net/documentation/en_US/junos/topics/concept/virtual-chassis-fabric- traffic-flow-understanding.html

NEW QUESTION NO: 14

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: 15
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: 16

Referring to the exhibit, a failure has occurred and the original VCF has split into two separate VCFs. The VCF associated with SW-1 is active and the VCF associated with SW-3 is inactive.
In this scenario, why are the two VCFs in these states?
A. The active VCF contains less operational interfaces than the deactivated VCF.
B. The active VCF contains the master RE and more than half of the VCF members.
C. The active VCF contains the master and backup REs.
D. The active VCF contains the backup RE and more than half of the VCF members.
Answer: B
Explanation/Reference:
Reference: https://www.juniper.net/documentation/en_US/junos/topics/concept/virtual-chassis-mx-series- split-detection.html

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.