1K0-002 · Question #204
Common Intermediate Format is approximately how many pixels per picture?
The correct answer is B. 100,000. See the full explanation below for the reasoning.
Question
Common Intermediate Format is approximately how many pixels per picture?
Options
- A25,000
- B100,000
- C500,000
- D100,000,000
How the community answered
(57 responses)- A2% (1)
- B79% (45)
- C12% (7)
- D7% (4)
Community Discussion
8
Mei-Ling H.Oct 16, 2025CIF, Common Intermediate Format, is 352 x 288 pixels, and if you multiply those together you get 101,376 pixels per picture. That rounds to approximately 100,000, so the answer is B. The other options are way off: 25,000 is too low (that would not even cover a small thumbnail at decent quality), 500,000 is closer to a megapixel-range format, and 100,000,000 is closer to a 100-megapixel sensor which is in a completely different league. Just memorize 352 x 288 for CIF and this question becomes automatic.
Lena V.Oct 19, 2025Solid breakdown, and worth adding that CIF itself derives from QCIF doubling (176 x 144 scaled up), so if you remember one you get the other for free on any question that tests both formats.
Ola B.Oct 11, 2025Saw this on mine, remembered CIF is 352x288, punched it out: 100,000 pixels, B all day.
Lena V.Oct 13, 2025CIF is 352x288 which is 101,376 pixels, so just over 100K, but yeah B is the right call for that resolution tier.
Orla P.Oct 7, 2025CIF works out to 352 by 288 pixels, which gives you right around 101,000 pixels per frame, so the answer that lands closest to that actual product is B. A lot of people get tripped up because they confuse CIF with QCIF, which cuts both dimensions in half and drops you down to roughly 25,000 pixels, making A a very tempting wrong choice. The exam loves to test whether you know the difference between the full format and its quarter-size sibling, so locking in those two resolutions side by side does a lot of work for you. Quick question though, are you studying CIF in the context of H.261 specifically, or does your material also bring in H.263, because the way the question is worded can shift depending on which standard they anchor it to?
Ola B.Oct 9, 2025Solid breakdown, and worth adding that if your material covers H.263 you will also run into CIF being used at higher frame rates than H.261 supports, so the pixel count alone is not the whole picture on exam day.
Lena V.Oct 23, 2025Going with C on this one and feel pretty solid about it. CIF was designed as a practical middle ground for video conferencing, and 100,000 pixels is just too coarse to qualify as anything useful for real transmission standards from that era, which is why B trips people up. If you think about a frame that is roughly 720 by 704 or somewhere in that neighborhood, you land right around 500,000, which matches what the format was actually built to handle for acceptable motion video quality. The word "common" in the name signals it was meant to be a usable, deployable standard, not a bare-minimum thumbnail resolution, and 500,000 pixels fits that practical design intent much better than the lower options.
Ola B.Oct 25, 2025Lena, actually B is the right call here because CIF is defined as 352 by 288 pixels, which puts you right at about 101,000 pixels, so 100,000 is the closest match. Spin up a quick H.261 spec lookup or even a Wireshark capture of an old H.323 call and you will see that 352x288 frame size pop up immediately as the baseline CIF definition.