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  5. Aruba Certified Data Center Architect Exam Questions and Answers

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Questions # 1:

In Spine and Leaf Design that involves the following:

    8360 12-P 100G Spine Switches

    8360 48-P 10G RJ45 Leaf Switches

    100G SR4 Optical connections between Spine and Leafs

Spine Switches = 8360 12-port 100G QSFP28 (F-B airflow)

Each Spine Switch uses:

    1 x 100G QSFP28 SR4 Optic to each Leaf switch

Each Leaf Switch uses:

    1 x 100G QSFP28 SR4 Optic to each Spine switch

    2 x 100G 1M DAC for ISL

    1 x 10G RJ45 for Keepalive

Each Spine switch has 4 available 100G QSFP28 interfaces. What is the solution scalability?

Options:
A.

Solution can scale to 6 total racks using the same subscription rates.

B.

Solution can scale to 10 total racks using the same subscription rates.

C.

Solution can scale to 4 total racks using the same subscription rates.

D.

Solution can scale to 12 total racks using the same subscription rates.

Expert Solution
Questions # 2:

Which of the following CX switches support VSF stacking technology?

Options:
A.

6200

B.

8100

C.

6400

D.

6100

Expert Solution
Questions # 3:

What is the transit VLAN that runs between VSX members?

Options:
A.

Must not be assigned IP addresses on any switch.

B.

It is used as a keepAlive mechanism

C.

It is a routed VLAN allowed in the ISL to ensure that the two switches within a VSX pair can learn routes from one another, in potential failover situations

D.

Must be assigned identical IP address on both of the switches

Expert Solution
Questions # 4:

Which stacking technology is a dual control plane stacking that is supported by CX switches?

Options:
A.

Back Plane Stacking

B.

IRF

C.

Front Plane Stacking

D.

VSX

Expert Solution
Questions # 5:

Mention two advantages of the ToR switches in Data Center Design

Options:
A.

Less unused ports on the switches

B.

Possibly less expensive

C.

Less cable sprawl

D.

Better issue isolation

Expert Solution
Questions # 6:

You have a customer who wants 3:1 oversubscription and has a CX switch with 24 ports, and each port operates at 25 Gbps edge ports. What is the expected uplink speed?

Options:
A.

400 Gbps

B.

250 Gbps

C.

100 Gbps

D.

200 Gbps

Expert Solution
Questions # 7:

CX Switches come with trusted platform modules (TPM). What is the function of TPM?

Options:
A.

TPM stores a certificate signed by an HPE Aruba Networking Certification Authority (CA).

B.

TPM prevents customers from loading certificates signed by the CA of their choice to the switches

C.

TPM is just a convenient name to allow users to connect to the switch securely

D.

TPM stores a certificate signed by GeoTrust Certification Authority (CA).

Expert Solution
Questions # 8:

What is true about rollback plan for migration phases? (Select two)

Options:
A.

Staff members can't be included in rollback dependency

B.

Don't give a timeframe for the rollback as this might affect customer confidence in your solution

C.

Archive Last known good configuration (state)

D.

Determine maximum time for rollback

Expert Solution
Questions # 9:

You have a data center with 99.9% availability requirements. How many hours of downtime (unplanned) is allowed to meet this availability requirement?

Options:
A.

6.8 hours

B.

3.4 hours

C.

8.6 hours

D.

8.8 hours

Expert Solution
Questions # 10:

You are involved in a 2-Tier L2 Data Center Design with the following details:

    CX 8325 100G Core Switches

    CX 10000 48-P 25G Access Switches

    100G SR4 Optical connections between Core and Access

In this design, both the Core Layer and Access Layer consist of pairs of switches configured in VSX for HA. Core Switches = VSX Pairs of CX 8325 32-port 100G switches (B-F airflow) Each pair uses:

    2 x 100G QSFP28 1M DACs for ISL

    1 x 100G QSFP28 1M DAC for Keepalive

    2 x 100G QSFP28 SR4 Optic to each access switch Each Core switch has 13 available 100G QSFP28 interfaces.

What is the maximum number of racks supported by this design?

Options:
A.

Solution can scale to 7 total racks using the same subscription rates.

B.

Solution can scale to 14 total racks using the same subscription rates.

C.

Solution can scale to 8 total racks using varying subscription rates.

D.

Solution can scale to 16 total racks using the same subscription rates.

Expert Solution
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