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ISC2 SSCP Exam - Topic 2 Question 33 Discussion

Which of the following statements pertaining to link encryption is false?
C) Information stays encrypted from one end of its journey to the other.
A) It encrypts all the data along a specific communication path.
B) It provides protection against packet sniffers and eavesdroppers.
D) User information, header, trailers, addresses and routing data that are part of the packets are encrypted.

ISC2 SSCP Exam - Topic 2 Question 33 Discussion

Actual exam question for ISC2's SSCP exam
Question #: 33
Topic #: 2
[All SSCP Questions]

Which of the following statements pertaining to link encryption is false?

Show Suggested Answer Hide Answer
Suggested Answer: C

When using link encryption, packets have to be decrypted at each hop and encrypted again.

Information staying encrypted from one end of its journey to the other is a characteristic of end-to-end encryption, not link encryption.

Link Encryption vs. End-to-End Encryption

Link encryption encrypts the entire packet, including headers and trailers, and has to be decrypted at each hop.

End-to-end encryption does not encrypt the IP Protocol headers, and therefore does not need to be decrypted at each hop.


and

Source: WALLHOFF, John, CBK#5 Cryptography (CISSP Study Guide), April 2002 (page 6).

by Jolene at May 08, 2022, 09:41 PM

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Taryn
8 months ago
I thought link encryption only covered the payload, not the headers.
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Ivette
9 months ago
Headers and routing data are also encrypted, right?
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Hyman
9 months ago
Wait, does it really keep info encrypted all the way?
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Ramonita
9 months ago
Totally agree, it protects against sniffers!
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Brittani
9 months ago
Link encryption does encrypt all data along the path.
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Lenora
9 months ago
I’m leaning towards option B being false, as I thought link encryption only protects data in transit, not necessarily against all types of attacks.
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Gianna
9 months ago
I feel like option D could be tricky since it mentions user information and headers, but I can't recall if those are always encrypted in link encryption.
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Dick
9 months ago
I think link encryption encrypts everything along the path, but I'm not sure if it includes headers and routing data.
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Larae
9 months ago
I remember practicing a question about link encryption, and I think option C might be the false one because it suggests end-to-end encryption.
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Ernestine
9 months ago
Determining the metrics beforehand is key to avoid bias. Gotta keep the test objective and scientific!
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Virgina
10 months ago
I feel like I've seen a question like this before where it emphasized the importance of documentation. Maybe that's why issuing a written warning is the right move?
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Zachary
10 months ago
This is a good test of our understanding of virtual teams. I feel pretty confident I can identify the main advantages, so I'll carefully review the options and select the ones that apply.
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