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Juniper JN0-1301 問題練習

Data Center Design, Specialist (JNCDS-DC) 試験

最新更新時間: 2019/05/10,合計65問。

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Question No : 1
Which statement is true about the upgrade process of a Junos Fusion system?

正解:

Question No : 2
You must make certain that your server traffic is load balanced across redundant connections to your access layer in a traditional three-tier architecture. You must also ensure that an access switch failure does not affect reachability to your servers.
In this scenario, which action would you perform to complete this task?

正解:

Question No : 3
A customer with five data centers spread around the world uses MPLS L2VPNs to provide point-to-point Data Center Interconnects between them in a full-mesh network. Anticipating growth to 20 data centers, this solution will not reasonably scale to that requirement.
What are three advantages of using MPLS EVPN in this scenario? (Choose three.)

正解:
Explanation: http://www.juniper.net/assets/us/en/local/pdf/whitepapers/2000596-en.pdf

Question No : 4
You are adding a QFX5100 edge switch into an existing network. You want to use a multichassis link aggregation group on your uplink ports to increase the resiliency of your network.
In which scenario would this be appropriate?

正解:

Question No : 5
Your customer has a high priority application housed within a corporate headquarters data center and two regional data centers. The customer cannot afford to provide individual data circuits to each location. The customer requires an end-to-end CoS architecture that will minimize over-subscription in the access switch.
Which three CoS components will meet the customer’s requirements? (Choose three.)

正解:

Question No : 6
Your customer has expressed interest in the Junos Fusion solution.
Which two devices should be used in the design proposal as satellite devices for this solution? (Choose two.)

正解:
Explanation:
A satellite device:
Is either a QFX5100 or EX4300 switch. The following QFX5100 switches running 14.1X53-D16 or later can be converted into satellite devices for a Junos Fusion: QFX5100-24Q-2P QFX5100-48S-6Q QFX5100-48T-6Q QFX5100-96S-8Q The following EX4300 switches running 14.1X53-D16 or later can be converted into satellite devices in a Junos Fusion: EX4300-24P EX4300-24T EX4300-48P EX4300-48T EX4300-48T-BF
Explanation: http://www.juniper.net/documentation/en_US/junos14.2/topics/concept/fusion-components.html

Question No : 7
Which three Data Center Interconnect functions are supported by EVPNs? (Choose three.)

正解:

Question No : 8
Click the Exhibit button.



You are designing a network for your company as shown in the exhibit. Applications residing on virtualized servers at each site need to be reachable at all times by the same IP address regardless of their location.
Which protocol must you include in the design to accomplish this task?

正解:

Question No : 9
Your customer has recently upgraded their Data Center Interconnect solution from VPLS to EVPN.
Which two features will the network gain? (Choose two.)

正解:
Explanation:
The following features are available for EVPNs:
・ Ethernet connectivity between data centers spanning metropolitan area networks (MANs) and WANs
・ One VLAN for each MAC VPN
・ Automatic route distinguishers
・ Dual homed EVPN connection with Active Standby multihoming
Explanation: http://www.juniper.net/documentation/en_US/junos15.1/topics/concept/evpns-overview.html

Question No : 10
You have physical servers that host multiple VMs from different tenants in your data center. You must secure these VMs.
According to Juniper Networks, which action will satisfy the requirement?

正解:

Question No : 11
What are two benefits of using VXLAN overlays in a data center network? (Choose two.)

正解:

Question No : 12
You want to rapidly deploy elastic Layer 3 through Layer 7 services in a data center.
What would be used to accomplish this task?

正解:

Question No : 13
You are deploying Spotlight Secure in the data center. You must determine which protocol will be permitted through the security devices in the management network for Spotlight Secure to work.
In this scenario, which protocol should you permit through the management security devices?

正解:

Question No : 14
A customer’s shared infrastructure is experiencing instability due to the number of routers that receive VPN routes and route updates originating from the data center.
Which BGP feature would minimize these updates?

正解:

Question No : 15
You are using IBGP with route reflection in your Clos IP fabric.
Which feature must you enable to allow the route reflector to advertise multiple versions of a route instead of only the best version?

正解:
Explanation:
BGP typically selects only one best path for each prefix and installs that route in the routing table. When BGP multipath is enabled, the device selects multiple equal-cost EBGP paths as the best paths to reach a given destination, and all these paths are installed in the routing table. BGP advertises only the active path to its neighbors. However, you can configure BGP to advertise multiple paths to the same destination for redundancy and load balancing.
Explanation: http://www.juniper.net/documentation/en_US/junos14.1/topics/topic-map/bgp-multipath.html

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