Which direction value means that an undefined local Source IP accesses an external resource?

Question

Options

• AR2L
• BL2R
• CL2L
• DR2R

• A
  4% (1)
• B
  4% (1)
• C
  17% (4)
• D
  74% (17)

Explanation

Option D (R2R) is correct because when a source IP is undefined - meaning it doesn't match any configured local/home network range - the security system cannot classify it as "Local," so it defaults to treating it as "Remote" (R). Since the destination is also an external (Remote) resource, both endpoints are Remote, giving a direction of R2R.

Why the distractors are wrong:

• A (R2L) describes inbound traffic: a known remote source reaching a local destination - the opposite destination direction.
• B (L2R) is the most tempting trap: it describes a defined local source accessing an external resource, but the source here is explicitly undefined.
• C (L2L) describes internal-only traffic where both endpoints are known local addresses.

Memory tip: Think of it as an identity check at a door. If the system can't identify your local badge (undefined source IP), you're treated as an outsider (R). If you're also going somewhere outside (external resource = R), you're a stranger going to a stranger's place - R2R.

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