This LFCS practice question tests your understanding of essential commands. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Which TWO commands can be used to list the contents of a tar archive without extracting it?
tar -tvf lists the contents of a tar archive verbosely without extracting.
B
tar -ztvf archive.tar.gz
tar -ztvf lists contents of a gzipped tar archive without extracting.
C
tar --list archive.tar
Why wrong: While --list is valid, it is redundant with -t, and the question expects specific flag combinations. Also, tar --list may not be as commonly used.
D
tar -xjf archive.tar.bz2
Why wrong: tar -xjf extracts a bzip2-compressed archive.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
tar -tvf archive.tar
Option A is correct because `tar -tvf archive.tar` lists the contents of a tar archive without extracting it. The `-t` flag tells tar to list the archive's table of contents, `-v` provides verbose output (showing file permissions, ownership, size, and timestamp), and `-f` specifies the archive file. This works for uncompressed tar archives.
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.
✓
tar -tvf archive.tar
Why this is correct
tar -tvf lists the contents of a tar archive verbosely without extracting.
Related concept
Read the scenario before looking for a memorised answer.
✓
tar -ztvf archive.tar.gz
Why this is correct
tar -ztvf lists contents of a gzipped tar archive without extracting.
Related concept
Read the scenario before looking for a memorised answer.
✗
tar --list archive.tar
Why it's wrong here
While --list is valid, it is redundant with -t, and the question expects specific flag combinations. Also, tar --list may not be as commonly used.
✗
tar -xjf archive.tar.bz2
Why it's wrong here
tar -xjf extracts a bzip2-compressed archive.
✗
tar -xvf archive.tar
Why it's wrong here
tar -xvf extracts the archive.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the `-t` (list) flag with `-x` (extract) or forget that compressed archives require an additional decompression flag (like `-z` or `-j`) even for listing, leading them to pick extraction options like D or E.
Detailed technical explanation
How to think about this question
The `tar` command uses the `-t` (list) mode to read the archive's header metadata sequentially without writing files to disk. For compressed archives, tar must decompress the stream in memory to read the headers, which is why flags like `-z` (gzip) or `-j` (bzip2) are needed with `-t`. In real-world scenarios, listing before extraction is crucial for verifying archive integrity or checking for path traversal attacks (e.g., files with absolute paths or `..` entries) that could overwrite system files.
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 LFCS 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.
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.
Essential Commands — This question tests Essential Commands — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: tar -tvf archive.tar — Option A is correct because `tar -tvf archive.tar` lists the contents of a tar archive without extracting it. The `-t` flag tells tar to list the archive's table of contents, `-v` provides verbose output (showing file permissions, ownership, size, and timestamp), and `-f` specifies the archive file. This works for uncompressed tar archives.
What should I do if I get this LFCS 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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