A network architect is planning an update of the server access layer in a data center. Currently,
the access layer switches have 10G links to distribution layer switches. In the new solution, HP
5930 Switches act as top of rack (ToR) switches with 40G links to core switches.
Which factor must the network architect consider when designing solution?
A.
Whether the data center cabling provides enough fiber strands to the racks to support the 40G
links
B.
Whether the new switches 40G transceivers are on the chassis front or back, the transceivers
must be on the same side as servers air outtakes
C.
Whether the servers connecting to the new switches use Ethernet Virtual Bridging (EVB)/Virtual
Ethernet Port Aggregate (VEPA), which is not compatible with 40G
D.
Whether the servers connecting to the new switches have NICs that support Converged
Enhanced Ethernet (CEE)
C
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Answer: A
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Answer A: it`s about the connection between Access and Core Switch. 40G contains 4*10G so you need more Fiber Links
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40G is not 4*10G connection. It’s a single QSFP+ module that uses one fiber pair like a regular SFP or SFP+.
So if the current switches are using 10G uplinks to distribution layer the same fiber can be used for the 40G connection.
So I think A is not correct but I’m not sure which one is the correct answer.
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QSFP+ doen’t use same SFP/SFP+ fiber unless you use a QSFP+ to SFP splitter and in that case you’ll need four fiber links.
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D
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are you sure… i have my exam tommorow =S
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Hi
What is the right answer please ?
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Hi Julio,
Have you passed the exam?
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