When using DHCP Option 148 to deploy a switch, the DHCP server will not provide which of the following information to the switch to be deployed?

Question

Options

• APort number of the cloud management platform
• BThe port number of the device to be deployed
• CIP address of the cloud management platform
• DThe IP address of the device to be deployed

• A
  3% (1)
• B
  72% (21)
• C
  17% (5)
• D
  7% (2)

Explanation

Option B is correct because the port number of the device being deployed (the switch) is a fixed, predetermined value embedded in the switch's firmware - it doesn't need to be dynamically assigned. DHCP Option 148 is a zero-touch provisioning mechanism designed to tell an unprovisioned switch where to find the cloud management platform, not to configure the switch's own listening ports.

Why the distractors are wrong:

• A (port of the cloud platform) - Option 148 does provide this, so the switch knows which port to contact on the management server.
• C (IP of the cloud platform) - Option 148 does provide this; it's the primary purpose of the option, telling the switch the management server's address.
• D (IP of the device to be deployed) - The DHCP server does assign this to the switch as part of the standard DHCP lease, which is how the switch gets on the network at all.

Memory tip: Think of Option 148 as giving the switch a "business card" for the cloud platform (its IP + port). The switch already knows its own "job title" (its own port numbers) - that's baked in at the factory. What it doesn't know until it boots is its own address (D) and where to call home (A, C).

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