Juniper JN0-680 問題集

質問 1：
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. BGP route reflectors only reflect the best route.
B. Each member of the IP Fabric needs a different autonomous system number.
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.
正解：A,D
解説: (Topexam メンバーにのみ表示されます)

質問 2：
Which protocol is used between VCF member devices to create a loop-free topology?
A. MSTP
B. RSTP
C. LLDP
D. VCCP
正解：D

質問 3：

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 4：

Referring to the exhibit, each leaf node is a QFX5100 acting as a VXLAN Layer 2 Gateway using EVPN signaling. Leaf 2 and Leaf 3 are both attached to the same EVPN Ethernet segment. Leaf 2 has been elected the designated forwarder for VLAN 200 on that Ethernet segment.
In this scenario, which two actions will Leaf 1 perform with the broadcast Ethernet frame received from Host A? (Choose two.)
A. Leaf 1 will send a VXLAN encapsulated copy of the Ethernet frame to Leaf 2 only.
B. Leaf 1 will strip the VLAN tag from the Ethernet frame before encapsulating it in VXLAN.
C. Leaf 1 will change the VLAN tag of the Ethernet frame to 200 before encapsulating it in VXLAN.
D. Leaf 1 will send a VXLAN encapsulated copy of the Ethernet frame to both Leaf 2 and Leaf 3.
正解：B,D

質問 5：

Which statement is valid for EVPN multihoming CE1 to PE1 and PE2 as shown in the exhibit?
A. CE1 must have the MAC mobility extended community enabled in BGP on both the CE and PEs.
B. CE1 must have LACP enabled on the interfaces attached to the PEs.
C. The PEs use BPDU autodiscovery by enabling STP on the interfaces attached to CE1.
D. The PEs must be manually configured for the ESI value on the interfaces attached to the CEs.
正解：D

質問 6：
A customer notices that all traffic is traveling over a single link within their partially meshed
IP Fabric using IBGP. While troubleshooting, the customer notices that the configuration is missing a configuration parameter.
Which parameter would the customer use to solve this problem?
A. add-path
B. multihop
C. accept-remote-nexthop
D. advertise-peer-as
正解：A

質問 7：
Exhibit:

You created an IP Fabric topology as shown in the exhibit and are having connectivity problems.
What is causing these problems?
A. 192.168.0.0 is not a valid endpoint address.
B. /31 addresses are not supported on Juniper devices.
C. The 192.168 network is reserved and should not be used for IP fabrics.
D. There is an Overlapping address.
正解：D