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Total 69 questions
What are two valid types of VXLAN signaling? (Choose two.)
- A. EVPN
- B. RSVP
- C. RSTP
- D. MPLS
Answer : A,D
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
Spine 1 and Spine 2 are MX Series devices configured to act as redundant VXLAN Layer 3
Gateways using the virtual-gateway-address 10.0.1.254 statement,
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 : B
You are configuring VXLAN on a network of QFX5100s, and are using the set vlans vlan100 vxlan unreachable-vtep-aging-timer 600 command.
What does this command do?
- A. This command ages out a remotely learned VTEP address after 600 seconds of inactivity.
- B. This command ages out the address of the remote VTEP 600 seconds after the last learned MAC address expires.
- C. This command ages out all learned MAC addresses assigned to the VTEP after 600 seconds of inactivity.
- D. This command ages out a locally learned MAC address assigned to the VTEP after 600 seconds of inactivity.
Answer : B
Explanation:
NOT A This answer is ambiguous and vague about which MACs are involved.
B this answer is most detailed and accurate.
C False; The aging timer refers to the remote VTEP MAC, not the MACs learned *via* that VTEP.
D False; The aging timer refers to the remote VTEP MAC after MACs learned *via* that
VTEP age out; not locally-learned MACs.
Referring to the exhibit, R1 and R2 are QFX5100 Series devices acting as VXLAN Layer 2
Gateways using PIM-SM signaling for the same VXLAN segment (VNI 5100). The multicast group assigned to VNI 5100 is 239.0.0.1. R1 currently has an entry in its MAC table for
Host B.
In this scenario. how will R1 react to receiving the Ethernet frame from Host A?
- A. R1 will send a VXLAN encapsulated Ethernet frame using 10.1.1.1 as the destination address.
- B. R1 will send a VXLAN encapsulated Ethernet frame along the source-based multicast tree using 239.0.0.1 as the destination address.
- C. R1 will send a VXLAN encapsulated Ethernet frame using 10.2.2.2 as the destination address.
- D. R1 will send a VXLAN encapsulated Ethernet frame along the RP-based multicast tree using 239.0.0.1 as the destination address.
Answer : A
Explanation:
Host A and B are on the same subnet, so communicating at Layer 2 MAC to MAC. The
Layer 3 information is for VXLAN mapping to multicast groups so the destination address is 239.0.0.1 group, and the tree is source-based (R1 has (10.1.1.1,239.0.0.1) in its multicast table). Assumption here the question infers Host A is sending a frame to Host B.
Question poorly worded.
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
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 : B
Which statement is valid for EVPN multihoming CE1 to PE1 and PE2 as shown in the exhibit?
- A. CE1 must have LACP enabled on the interfaces attached to the PEs.
- B. The PEs must be manually configured for the ESI value on the interfaces attached to the CEs.
- C. The PEs use BPDU autodiscovery by enabling STP on the interfaces attached to CE1.
- D. CE1 must have the MAC mobility extended community enabled in BGP on both the CE and PEs.
Answer : B
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 : D
Referring to the exhibit, SW-3 and SW-4 have been configured for mixed-mode VCF and added to the VCF. After cabling the new devices into the VCF, you notice that SW-3 automatically joins the VCF, whereas SW-4 does not.
Why are SW-3 and SW-4 behaving this way? (Choose two.)
- A. By default, EX4300 QSFP+ ports are enabled as VCPs.
- B. By default, QFX5100 ports are not enabled as VCPs.
- C. By default, EX4300 QSPF+ ports are not enabled as VCPs.
- D. By default, QFX5100 ports are enabled as VCPs.
Answer : A,B
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
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
A customer has built a VXLAN using an EVPN signaling infrastructure with remote facilities with VXLAN using EVPN signaling connected to the Internet. The customer notices that the network is completely stable with no protocol errors in the underlay or overlay. The customer, however, cannot pass any application data across the network.
Which statement would explain the intermittent loss?
- A. There is an LACP key mismatch.
- B. The MTU is exceeded.
- C. The routing protocol authentication has failed.
- D. The BPDU protection is invoked.
Answer : B
You are implementing a Virtual Chassis using QFX5100s and EX4300s in your data center.
In this scenario, which two statements are correct? (Choose two.)
- A. Only 10GbE VCP connections can be used between the QFX5100s and the EX4300s.
- B. The QFX5100 devices cannot assume the line card role in the Virtual Chassis.
- C. Some hardware capabilities are limited by the capabilities of the EX4300 switches.
- D. The EX4300 devices can only assume a line card role in the Virtual Chassis.
Answer : C,D
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