What is the netmask for each configured Warp Link?

Question

Options

• A255.255.255.0
• B0.0.0.0
• C255.255.0.0
• DSame as the netmask of the default route of the External Virtual Router
• E255.255.255.255

• B
  7% (2)
• D
  3% (1)
• E
  90% (26)

Explanation

Each Warp Link is a point-to-point logical interface representing a single host endpoint, so it uses a /32 netmask - 255.255.255.255 - meaning the "network" contains exactly one address with no room for other hosts. This is standard for loopback-style or tunnel endpoint interfaces where no subnet broadcast is needed.

Why the distractors are wrong:

• A (255.255.255.0 / /24) - a typical LAN subnet mask; far too broad for a point-to-point link and would imply 254 usable hosts.
• B (0.0.0.0) - not a valid netmask for an interface; this represents "no mask" or a wildcard context (e.g., ACLs), never an interface configuration.
• C (255.255.0.0 / /16) - a Class B-style mask used for larger networks; completely inappropriate for a single-endpoint virtual link.
• D (same as the default route's netmask) - Warp Links are independent of the External Virtual Router's routing table; their mask is fixed by their point-to-point nature, not inherited from another route.

Memory tip: Think /32 = one host, one purpose. Whenever you see a virtual, loopback, or point-to-point interface (Warp Links, tunnel endpoints, loopbacks), the answer is almost always 255.255.255.255 - because there's only one IP on that "link."

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