This LPIC-1 practice question tests your understanding of gnu and unix commands. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A successful TCP three-way handshake followed by a data transfer.
The exhibit shows a TCP three-way handshake (SYN, SYN-ACK, ACK) followed by a data transfer segment (PSH, ACK). This sequence indicates a successful connection establishment and subsequent data exchange, which matches the description of a successful TCP three-way handshake followed by data transfer.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
A successful TCP three-way handshake followed by a data transfer.
Why this is correct
Packets show SYN, SYN-ACK, ACK (handshake), then PUSH-ACK with data.
Related concept
Read the scenario before looking for a memorised answer.
The destination port 80 indicates HTTP, not DNS (53).
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse a successful TCP handshake with an incomplete one by overlooking the final ACK, or they may misinterpret the PSH flag as application-layer protocol traffic (like FTP or DNS) without checking port numbers or protocol-specific payloads.
Detailed technical explanation
How to think about this question
The TCP three-way handshake (SYN, SYN-ACK, ACK) establishes a reliable connection before data transfer, as defined in RFC 793. The PSH (Push) flag in the data segment indicates that the sender wants the data to be pushed to the receiving application immediately, which is common in interactive protocols like HTTP or SSH. In real-world scenarios, tools like tcpdump or Wireshark display these flags to help diagnose connection issues or application performance.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the LPIC-1 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Visual reference
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
GNU and Unix Commands — This question tests GNU and Unix Commands — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A successful TCP three-way handshake followed by a data transfer. — The exhibit shows a TCP three-way handshake (SYN, SYN-ACK, ACK) followed by a data transfer segment (PSH, ACK). This sequence indicates a successful connection establishment and subsequent data exchange, which matches the description of a successful TCP three-way handshake followed by data transfer.
What should I do if I get this LPIC-1 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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