Juniper JN0-680 問題集

質問 1：
What is the endpoint of a VXLAN tunnel?
A. VTEP
B. LSR
C. DLCI
D. VCF
正解：A

質問 2：
You are using IBGP to deploy an IP fabric. There are four spine devices, two of which are configured as route reflectors. You notice that the other two spines are not receiving all the possible paths to each leaf, and traffic cannot be load-balanced to the leaf devices.
Which two actions will resolve this problem? (Choose two.)
A. Configure the add-path parameter on the leaf devices.
B. Configure the multipath parameter on the route reflectors.
C. Configure the multihop parameter on the route reflectors.
D. Configure the add-path parameter on the route reflectors.
正解：A,D

質問 3：
You are deploying an IP Fabric in your new data center. You need to ensure that your servers have multiple active/active links for redundancy and load balancing.
What are two methods to accomplish this goal? (Choose two.)
A. Use MSTP to enable multiple links on the access switch.
B. Use MC-LAG at the access switch.
C. Use EVPN with ESI at the access switch.
D. Use PIM-SM to enable multicast across multiple links.
正解：A,B
解説: (Topexam メンバーにのみ表示されます)

質問 4：

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
正解：B

質問 5：
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 43 with a supoption of 03
B. DHCP options 43 with a supoption of 00
C. DHCP options 66 with a supoption of 00
D. DHCP options 66 with a supoption of 03
正解：B

質問 6：
You have deployed a multicast server attached to a QFX5100 Series device serving as a
VTEP.
Which two statements are correct in this scenario? (Choose two.)
A. By default, the QFX5100 will encapsulate the multicast packets in VXLAN and forward them to all remotely connected VTEPs.
B. By default, the QFX5100 will send copies of the multicast packets to locally attached devices in the same VLAN that are interested receivers only.
C. By default, the QFX5100 will send copies of the multicast packets to all locally attached devices in the same VLAN.
D. By default, the QFX5100 will encapsulate the multicast packets in VXLAN and forward them to remotely connected VTEPs with interested receives only.
正解：A,C

質問 7：

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 (*.G) PIM Join message to the RP.
B. R1 will send a VXLAN packet over the RP-based multicast tree.
C. R1 will send a VXLAN packet over the (S,G) tree built to R2.
D. R1 will send an (S,G) PIM Join message to R2.
正解：B