Juniper JN0-680 問題集

質問 1：

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 along the source-based multicast tree using 239.0.0.1 as the destination address.
B. R1 will send a VXLAN encapsulated Ethernet frame using 10.2.2.2 as the destination address.
C. R1 will send a VXLAN encapsulated Ethernet frame using 10.1.1.1 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.
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 2：
You are implementing a Virtual Chassis using QFX5100s and EX4300s in your data center.
In this scenario. which three hardware capabilities are affected? (Choose three.)
A. number of supported routing instances
B. number of usable ports per member
C. maximum number of firewall filters
D. MAC table size
E. usable VCP connections limited to 10GbE
正解：A,C,D

質問 3：
Which statement is true for an IP Fabric to be called a Clos IP Fabric?
A. Spine devices must be connected in a full mesh.
B. Spanning tree must be completely eliminated.
C. The protocol used is OSPF, IS-IS, or BGP.
D. The number of uplinks from a leaf device equals the number of spine devices.
正解：D

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：

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 management interfaces
B. on the ICL-PL connection
C. on the ae1 interface
D. on the ae2 interface
正解：A

質問 6：
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 7：

You are deploying MC-LAG as shown in the exhibit.
Which statement is correct when using active/active mode?
A. VRRP must be used to ensure MAC addresses are shared between peers.
B. Only ICCP control traffic is allowed through the ICL-PL connection
C. VCCP is used to exchange MAC addresses between MC-LAG peers.
D. ICCP and block filters are used to avoid Layer 2 loops.
正解：D