Docker Certified Associate (DCA) — Question 3

What is the difference between the ADD and COPY Dockerfile instructions? (Choose two.)

Answer options

• A. ADD supports regular expression handling while COPY does not.
• B. COPY supports compression format handling while ADD does not.
• C. ADD supports compression format handling while COPY does not.
• D. COPY supports regular expression handling while ADD does not.
• E. ADD supports remote URL handling while COPY does not.

Correct answer: C, E

Explanation

The correct answer is C and E because ADD has the capability to handle compression formats and can also fetch files from remote URLs, which COPY cannot do. Options A and D incorrectly attribute regular expression handling to ADD and COPY, while B incorrectly states that COPY supports compression handling, which it does not.