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31.
In which storage technology are all storages devices attached locally?
  • A.
    NAS
  • B.
    SAN
  • C.
    DAS
  • D.
    PAS
  • Answer & Explanation
  • Report
Answer : [C]
Explanation :
One of the key features of DAS is that there is no network connection standing between the server and the storage, as is the case with SAN and NAS.
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32.
Which of the following is not an advantage of NAS?
  • A.
    A NAS has lower latency and higher reliability than a SAN.
  • B.
    A NAS typically supports multiple RAID methods.
  • C.
    A NAS supports high throughput.
  • D.
    Implementing a NAS is inexpensive.
  • Answer & Explanation
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Answer : [A]
Explanation :
On the contrary, a NAS has higher latency and lower reliability than a SAN.
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33.
In which of the following is the storage natively reachable through a TCP/IP network?
  • A.
    NAS
  • B.
    SAN
  • C.
    DAS
  • D.
    PAS
  • Answer & Explanation
  • Report
Answer : [A]
Explanation :
Network-attached storage, as the name implies, consists of storage devices that are attached to the network and not attached locally to the server or servers that may be accessing the NAS. Although the storage may not be attached locally to the server, it is reachable via the TCP/IP network.
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34.
Which of the following is an advantage of a SAN?
  • A.
    Ethernet troubleshooting is well understood.
  • B.
    Implementing a SAN is inexpensive.
  • C.
    It’s possible to leverage legacy investments
  • D.
    Sharing is made easier by the fact that the SAN is not connected directly to any network or server.
  • Answer & Explanation
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Answer : [D]
Explanation :
While sharing is made easier by the fact that the SAN is not connected directly to any network or server, a SAN is expensive, doesn’t use Ethernet, and doesn’t allow you to leverage legacy investments in non-fiber technologies.
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35.
Which of the following uses the Fibre Channel protocol?
  • A.
    NAS
  • B.
    SAN
  • C.
    DAS
  • D.
    PAS
  • Answer & Explanation
  • Report
Answer : [B]
Explanation :
In a classic SAN, devices communicate using the Fibre Channel protocol over a fiber network of storage devices typically connected to a Fibre Channel switch. This means that any servers that will be directly connected to this fiber network must have a host bus adapter (HBA) installed that can communicate on the fiber network.
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