SPLK-1003 Transactions and Event Correlation Practice Question
This SPLK-1003 practice question tests your understanding of transactions and event correlation. Compare every option against the stated constraints before choosing — the best answer satisfies all requirements, not just the most obvious one. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Refer to the exhibit. A security analyst runs the above search. Which of the following best describes the result?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Transactions beginning with 'allow' and ending with 'deny' for src_ip 10.0.0.1, with a maximum duration of 5 minutes
Option D is correct because the transaction command groups events by src_ip=10.0.0.1 with startswith='allow' and endswith='deny' and a maxspan of 5 minutes. This forms transactions that begin with an 'allow' event and end with a 'deny' event within a 5-minute window for that source IP. Option A is incorrect because the search filters events for src_ip 10.0.0.1 only, not all source IPs. Option B is incorrect because it describes transactions of all firewall events, but the start and end conditions restrict the events filtered. Option C is incorrect because it reverses the start and end conditions (start with deny, end with allow) whereas the search specifies start with allow and end with deny.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Transactions for all source IPs, but only showing src_ip 10.0.0.1 in the table
Why it's wrong here
The index filter and src_ip transaction field limit to that IP; maxspan is 5 min, not 1 hour.
✗
Transactions of all firewall events for src_ip 10.0.0.1, each lasting up to 5 minutes
Why it's wrong here
Not all events; only those matching start and end conditions.
✗
Transactions of src_ip 10.0.0.1 that start with deny and end with allow
Why it's wrong here
The startswith and endswith are reversed.
✓
Transactions beginning with 'allow' and ending with 'deny' for src_ip 10.0.0.1, with a maximum duration of 5 minutes
Why this is correct
Correct interpretation of the transaction parameters.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.
TExam Day Tips
→Check inbound versus outbound direction.
→Read the ACL from top to bottom.
→Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
How this comes up in practice
A security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
What to study next
Got this wrong? Here's your next step.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related SPLK-1003 ACL questions on filtering logic and placement.
Transactions and Event Correlation — This question tests Transactions and Event Correlation — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Transactions beginning with 'allow' and ending with 'deny' for src_ip 10.0.0.1, with a maximum duration of 5 minutes — Option D is correct because the transaction command groups events by src_ip=10.0.0.1 with startswith='allow' and endswith='deny' and a maxspan of 5 minutes. This forms transactions that begin with an 'allow' event and end with a 'deny' event within a 5-minute window for that source IP. Option A is incorrect because the search filters events for src_ip 10.0.0.1 only, not all source IPs. Option B is incorrect because it describes transactions of all firewall events, but the start and end conditions restrict the events filtered. Option C is incorrect because it reverses the start and end conditions (start with deny, end with allow) whereas the search specifies start with allow and end with deny.
What should I do if I get this SPLK-1003 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related SPLK-1003 ACL questions on filtering logic and placement.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Standard ACLs match source addresses.
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