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ISC2 CSSLP Exam - Topic 5 Question 79 Discussion

Posted by Marge on Jan 28, 2024 at 08:14 PM

Which of the following techniques is used to identify attacks originating from a botnet?

Suggested Answer: A

The Recovery Point Objective (RPO) describes the acceptable amount of data loss measured in time. It is the point in time to which data must

be recovered as defined by the organization. The RPO is generally a definition of what an organization determines is an 'acceptable loss' in a

disaster situation. If the RPO of a company is 2 hours and the time it takes to get the data back into production is 5 hours, the RPO is still 2

hours. Based on this RPO the data must be restored to within 2 hours of the disaster.

Answer B is incorrect. The Recovery Time Objective (RTO) is the duration of time and a service level within which a business process

must be restored after a disaster or disruption in order to avoid unacceptable consequences associated with a break in business continuity. It

includes the time for trying to fix the problem without a recovery, the recovery itself, tests and the communication to the users. Decision time

for user representative is not included. The business continuity timeline usually runs parallel with an incident management timeline and may

start at the same, or different, points.

In accepted business continuity planning methodology, the RTO is established during the Business Impact Analysis (BIA) by the owner of a

process (usually in conjunction with the Business Continuity planner). The RTOs are then presented to senior management for acceptance.

The RTO attaches to the business process and not the resources required to support the process.

Answer D is incorrect. The Recovery Time Actual (RTA) is established during an exercise, actual event, or predetermined based on

recovery methodology the technology support team develops. This is the time frame the technology support takes to deliver the recovered

infrastructure to the business.

Answer C is incorrect. The Recovery Consistency Objective (RCO) is used in Business Continuity Planning in addition to Recovery Point

Objective (RPO) and Recovery Time Objective (RTO). It applies data consistency objectives to Continuous Data Protection services.


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41 comments · newest first
RE
Reita 10 months ago
I thought IFilter was more for document searching, not attacks.
FR
Frederica 11 months ago
Recipient filtering? Not sure that’s effective against botnets.
FI
Filiberto 11 months ago
Wait, is Passive OS fingerprinting even related to botnets?
BR
Britt 11 months ago
Totally agree, it’s great for identifying botnet traffic!
BI
Billy 11 months ago
I think BPF-based filter is the right choice.
EU
Eun 12 months ago
I don't remember much about IFilter, but it doesn't sound like it would help with identifying botnet attacks.
MA
Marlon 12 months ago
I feel like BPF-based filters could be the right answer since they are often used for network traffic analysis.
KA
Kate 12 months ago
I remember practicing with questions about filtering techniques, but I can't recall if recipient filtering applies here.
ZO
Zoila 1 year ago
I think passive OS fingerprinting might be related, but I'm not entirely sure if it's specifically for botnets.
PA
Pamella 1 year ago
This is a good question to test our knowledge of botnet detection methods. I'm going to carefully consider each option and try to eliminate the ones that don't seem relevant.
ST
Stefany 1 year ago
I'm a bit confused by the options here. I'll need to make sure I understand the differences between these techniques before selecting an answer.
AL
Alverta 1 year ago
Okay, I think I know the answer to this. Passive OS fingerprinting is used to identify the operating systems of devices in a network, which can help detect bots that are part of a botnet.
FR
Franchesca 1 year ago
This seems like a tricky question. I'll need to think carefully about the different techniques used to identify botnet attacks.
DI
Dierdre 1 year ago
Hmm, I'm not totally sure about this one. I'll have to review my notes on network security and see if I can recall the specific techniques for detecting botnets.
EU
Eugene 1 year ago
Hmm, I'm not totally sure about the differences between a Virtual Log Collector and a lockbox. I'll need to think this through carefully.
QU
Quentin 1 year ago
Hmm, I'm a little unsure about this one. I'll have to think it through carefully. Maybe I should review my notes on contract law before deciding.
MA
Margo 1 year ago
I think we had a similar question in practice about correct IP addressing, but I'm confused about what the subnet mask should be.
ME
Merissa 1 year ago
BPF-based filter, huh? Sounds like a fancy way to say 'We're gonna put a net over the whole network and see what crawls in.'
VI
Viola 1 year ago
↳ replying to Merissa
It's a proactive approach to identifying and blocking potential threats.
FL
Floyd 1 year ago
↳ replying to Merissa
I think it's more about analyzing network traffic to detect patterns of botnet activity.
JA
Jackie 1 year ago
↳ replying to Merissa
Yeah, it's like a filter that catches suspicious activity from botnets.
ET
Ettie 1 year ago
Hmm, Passive OS fingerprinting sounds like the most logical choice here. I mean, who doesn't love a good ol' game of 'Guess the Botnet's Operating System'?
IL
Iluminada 1 year ago
↳ replying to Ettie
Recipient filtering might not be as useful as Passive OS fingerprinting in this case.
MI
Michael 1 year ago
↳ replying to Ettie
I think BPF-based filter could also be effective in detecting botnet activity.
TA
Tamra 1 year ago
↳ replying to Ettie
Passive OS fingerprinting is a good choice for identifying botnet attacks.
KI
Kirk 1 year ago
IFilter? Isn't that some kind of text indexing tool? I don't see how that would help identify botnet attacks. Definitely going with A, Passive OS fingerprinting.
BA
Bambi 1 year ago
↳ replying to Kirk
C) IFilter is indeed a text indexing tool, not related to identifying botnet attacks.
MI
Micah 1 year ago
↳ replying to Kirk
B) Recipient filtering is more for email security, not really for botnet detection.
WI
Willard 1 year ago
↳ replying to Kirk
A) Passive OS fingerprinting is a common technique used to identify botnet attacks.
EL
Elenora 1 year ago
Recipient filtering? That sounds more like a spam prevention technique. I'm going with D, BPF-based filter. It's designed to filter network traffic, which is crucial for botnet detection.
JO
Joye 1 year ago
I'm pretty sure it's Passive OS fingerprinting. Botnet attacks usually involve infected machines, and identifying their OS can help detect the attack pattern.
LA
Latrice 1 year ago
↳ replying to Joye
Actually, I think it's IFilter.
TE
Tequila 1 year ago
↳ replying to Joye
No, I believe it's BPF-based filter.
CA
Carmela 1 year ago
↳ replying to Joye
I'm not sure, maybe it's Recipient filtering?
LU
Lura 1 year ago
↳ replying to Joye
I think it's Passive OS fingerprinting.
LO
Lorean 2 years ago
I'm not sure, but I think A) Passive OS fingerprinting could also be used to identify botnet attacks.
SU
Susana 2 years ago
I agree with Corrinne. BPF-based filter can help identify attacks from a botnet.
CO
Corrinne 2 years ago
I think the answer is D) BPF-based filter.
MA
Marylin 2 years ago
I'm not sure, but I think A) Passive OS fingerprinting could also be used for this.
DO
Dominga 2 years ago
I agree with Carmela, BPF-based filter can help identify botnet attacks.
CA
Carmela 2 years ago
I think the answer is D) BPF-based filter.
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