D-UN-OE-23 · Question #80
A storage administrator needs to connect a new iSCSI host to a Dell Unity XT array. Which I/O modules support host iSCSI connectivity?
The correct answer is B. 10 GbE Base-T and 25 GbE optical. Option B is correct because Dell Unity XT supports iSCSI host connectivity through two distinct I/O module types: 10 GbE Base-T (copper RJ-45) for cost-effective, shorter-distance connections, and 25 GbE optical (SFP28) for higher-bandwidth, longer-distance links - both are…
Question
A storage administrator needs to connect a new iSCSI host to a Dell Unity XT array. Which I/O modules support host iSCSI connectivity?
Options
- A25 GbE optical only
- B10 GbE Base-T and 25 GbE optical
- C16 Gb/s FC and 25 GbE optical
- D10 GbE Base-T only
How the community answered
(23 responses)- B96% (22)
- D4% (1)
Explanation
Option B is correct because Dell Unity XT supports iSCSI host connectivity through two distinct I/O module types: 10 GbE Base-T (copper RJ-45) for cost-effective, shorter-distance connections, and 25 GbE optical (SFP28) for higher-bandwidth, longer-distance links - both are valid iSCSI transports on this platform.
Why the distractors are wrong:
- A (25 GbE optical only) is incomplete - it excludes the 10 GbE Base-T module, which also supports iSCSI.
- C (16 Gb/s FC and 25 GbE optical) is wrong because 16 Gb/s FC is a Fibre Channel protocol, not iSCSI; FC uses a completely different host connectivity stack.
- D (10 GbE Base-T only) is the mirror image of A - also incomplete, excluding the 25 GbE optical option.
Memory tip: Think "iSCSI = IP-based," so you need Ethernet modules only - eliminate FC immediately. Then remember Unity XT gives you both copper (Base-T) and optical flavors of Ethernet for iSCSI, making "both" the only complete answer.
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