Juniper Networks Certified Design Specialist, Data Center (JNCDS-DC) (JN0-1300) Free Practice Test

Question 1

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 oversubscription in the access switch.
Which three CoS components will meet the customer's requirements? (Choose three.)

A. explicit congestion notification

B. CoS rewrite rules

C. standard flow control

D. priority flow control

E. code-point aliases

Correct Answer: A,B,D

Question 2

Clos architectures are based on which network topology?

A. ring

B. VLANs

C. spine and leaf

D. hybrid

Correct Answer: C

Question 3

A Virtual Chassis Fabric (VCF) is placed into mixed mode.
In this scenario, what are two changes in the behavior of the VCF? (Choose two.)

A. Mixed mode allows an EX4200 to be added as a leaf node.

B. Mixed mode lowers the hardware scaling numbers of a VCF.

C. Mixed mode disables certain software features of a VCF.

D. Mixed mode allows VCPs of varying speeds between members.

Correct Answer: B,C

Question 4

From a network management perspective, a Virtual Chassis consisting of the five physical switches will appear as how many devices?

A. 0

B. 5

C. 1

D. 2

Correct Answer: C

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Question 5

A customer's data center is built with a QFX3000-G composed of four QFX3008-I Interconnects, four QFX5100-48S nodes in the network Node group, and 20 QFX5100-48S nodes spread in 10 redundant server Node groups. There are host systems (FCoE clients) scattered everywhere throughout the data center.
In this scenario, where should the FCoE-to-FC gateway(s) be placed?

A. QFX3500s must be placed directly attached to the QFX3008-I Interconnects as a new Fibre Channel Nodegroupto provide a centralized FC-to-FCoE gateway.

B. QFX3500s must be placed into the network Node group to provide a centralized FC-to-FCoE gateway.

C. QFX3500s must be placed external to the QFX3000-G to provide an external FC-to-FCoE gateway.

D. Every Node which has FCoE client servers must become its own FC-to-FCoE gateway to provide a distributed FC-to-FCoE gateway.

Correct Answer: B

Question 6

Which statement is true about the upgrade process of a Junos Fusion system?

A. The Junos OS version will match on all devices of the Junos Fusion system.

B. Junos OS on the satellite devices is automatically upgraded as part of the process.

C. The Junos OS on the aggregation and satellite devices must be upgraded individually.

D. The Junos OS version will only be upgraded on the aggregation devices.

Correct Answer: B

Question 7

Your customer asks you to design a Data Center Interconnect solution. The solution should allow each of the tenants to use 802.1q tagging without concern for possible overlap in VLAN tags.
Which two protocols would you use to meet the customer requirements? (Choose two.)

A. EVPN

B. MLDP

C. MSTP

D. VXLAN

Correct Answer: A,D

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Juniper Networks Certified Design Specialist, Data Center (JNCDS-DC) (JN0-1300) Free Practice Test