Question 1

You want to provide Layer 2 connectivity to a backup data center or to a disaster recovery site. What would you use to accomplish this task?

Accepted Answer

Data Center Interconnect (DCI) is used to provide Layer 2 connectivity between data centers, which is essential for backup and disaster recovery sites.

Question 2

A customer is using EVPN to maximize their Data Center Interconnect and provide a stretched Layer 2 network to support VM mobility. What are two benefits in this scenario? (Choose two.)

Accepted Answer

EVPN uses the control plane to populate Layer 2 MAC tables and load balancing is used across the WAN per flow.

Question 3

Your company is deploying a private cloud based on OpenStack and has selected Contrail Networking as their SDN controller. Which statement is true in this scenario?

Accepted Answer

The answer of Your company is deploying a private cloud...

Question 4

You are designing an IP fabric using EVPN with VXLAN and must ensure that all links between the leaf and spine nodes are used as efficiently as possible. Which two design considerations are important to achieve this task? (Choose two.)

Accepted Answer

The answer of You are designing an IP fabric using...

Question 5

How many inches does one RU equal?

Accepted Answer

The answer of How many inches does one RU equal?
...

Question 6

Which devices are recommended by Juniper Networks as edge routers in a data center?

Accepted Answer

The MX Series is recommended by Juniper Networks as edge routers in a data center due to their high performance and scalability.

Question 7

Which two security components are inherent in a Contrail vRouter? (Choose two.)

Accepted Answer

The answer of Which two security components are inherent in...

Question 8

You are designing an IP fabric using IBGP as your underlay. In this scenario, which statement is correct?

Accepted Answer

In an IBGP IP fabric, route reflectors are typically implemented on spine devices to reduce the need for a full mesh of IBGP sessions, which simplifies the network design and reduces the number of IBGP connections required.

Question 9

Which two statements describe the Contrail vRouter? (Choose two.)

Accepted Answer

The answer of Which two statements describe the Contrail vRouter?...

Question 10

You are designing a Control-based SDN overlay network. IP filtering and tenant separation for Layer 3 and Layer 4 traffic is required for this installation. In this scenario, which Contrail component performs this function?

Accepted Answer

The vRouter in Contrail is responsible for handling IP filtering and tenant separation for Layer 3 and Layer 4 traffic, making it the correct component for this function.

Question 11

Which protocol is used on the VPCs of a Virtual Chassis Fabric?

Accepted Answer

VCCP (Virtual Chassis Control Protocol) is used to manage and control the VPCs (Virtual Port Channels) within a Virtual Chassis Fabric.

Question 12

Two data centers need to be connected for application and server mobility. An MPLS pseudowire is going to facilitate the necessary connectivity. This pseudowire will extend between which two types of network devices?

Accepted Answer

PE to PE are the two types of network devices that will be connected by the MPLS pseudowire.

Question 13

You are seeking a server-virtualization security solution that is lightweight and will protect virtual machines from a variety of threats. Which platform should you choose in this scenario?

Accepted Answer

vSRX is a virtual firewall that provides security for virtual machines, offering protection against various threats in a lightweight form.

Question 14

A customer has selected QFX5110 switches. The initial installation will contain two switches located in racks about two meters apart. What is the most cost-effective way to interconnect these switches?

Accepted Answer

A three-meter passive DAC (Direct Attach Copper) cable is the most cost-effective solution for interconnecting switches over a short distance like two meters, as it is less expensive than fiber optic solutions and does not require additional transceivers.

Question 15

You are designing a data center network with a combination of KVM virtual machines and physical QFX Series devices. You require a single Juniper Networks solution for monitoring resource utilization across all devices. In this scenario, which product would satisfy this requirement?

Accepted Answer

AppFormix is a Juniper Networks solution designed for monitoring and optimizing resource utilization across both virtual and physical environments, making it suitable for the scenario described.

Question 16

Your SAN team must transmit FC between multiple locations in a data center. To keep the cost of the project to a minimum, your management decides that using FCoE would be the most cost-effective approach. In this scenario, which architecture will support FCoE losslessly?

Accepted Answer

Virtual Chassis Fabric supports FCoE losslessly by providing a low-latency, high-performance network that can handle the requirements of FCoE traffic.

Question 17

You are designing a Junos-based Ethernet Fabric for a data center that has a combination of 60 EX Series and QFX Series devices. In this scenario, which solution would you choose?

Accepted Answer

Virtual Chassis Fabric (VCF) is designed for data centers and can support a combination of EX Series and QFX Series devices, making it suitable for the given scenario.

Question 18

Click the Exhibit button. Referring to the exhibit, what must you change to make the topology a supported Virtual Chassis Fabric design?

Accepted Answer

The answer of Click the Exhibit button. Referring to the...

Question 19

Which two statements are correct about a VCF deployment? (Choose two.)

Accepted Answer

A VCF deployment allows up to four spine devices, and the fabric is managed as a single logical device.

Question 20

You are re-designing a traditional multitiered data center into a modern spine-and-leaf data center architecture. In this scenario, which two tiers are collapsed? (Choose two.)

Accepted Answer

In a spine-and-leaf architecture, the traditional distribution and core layers are collapsed into a single layer, simplifying the network and improving performance.

Exam 2: Data Center Design, Specialist (JNCDS-DC)