Which of the following security protocols provides confidentiality, integrity, and authentication of network traffic with end-to-end and intermediate-hop security?

Question

Options

• AIPSec
• BSET
• CSWIPE
• DSKIP

• A
  6% (2)
• B
  3% (1)
• C
  88% (29)
• D
  3% (1)

Explanation

SWIPE (Simple With IP Encapsulation) is correct because it was specifically architected to deliver confidentiality, integrity, and authentication at both end-to-end and intermediate-hop levels - meaning intermediate routers can also participate in security processing, not just the endpoints. This dual-mode capability is the key distinguishing feature that sets it apart from the other options.

IPSec (A) is a strong distractor - it does provide all three security services, but it operates either end-to-end (transport mode) or hop-by-hop (tunnel mode between gateways), not both simultaneously in the same flow; additionally, intermediate routers in a standard IPSec deployment don't inspect/process the secured payload. SET (B) was designed specifically for e-commerce credit card transactions, not general-purpose network traffic security. SKIP (D) is a key management/distribution protocol for IPSec - it handles how keys are exchanged, not the actual delivery of confidentiality, integrity, or authentication itself.

Memory tip: Think of SWIPE as "Security With Intermediate-node Protection Everywhere" - the word intermediate embedded in the acronym reminds you that SWIPE uniquely covers both hops and endpoints.

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