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Exam 220-1101 All Questions

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Exam 220-1101 topic 1 question 278 discussion

Actual exam question from CompTIA's 220-1101
Question #: 278
Topic #: 1
[All 220-1101 Questions]

A new HD webcam's image only updates one or two times per second. The specifications indicate the webcam is capable of updating 30 frames per second. Which of the following is MOST likely causing the issue?

  • A. The USB 2.0 port has insufficient bandwidth.
  • B. The Thunderbolt connector is not compatible.
  • C. The VGA cable does not support a digital signal.
  • D. The connection should use plenum instead of STP.
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️

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Dadadagreat
Highly Voted 1 year, 10 months ago
A is correct
upvoted 5 times
Arrmanas
6 months, 3 weeks ago
Please explain why you decided on Answer A ??
upvoted 1 times
JonHin
2 months, 2 weeks ago
The USB 2.0 port has insufficient bandwidth to support a high-definition webcam that can update 30 frames per second. USB 2.0 has a maximum theoretical bandwidth of 480 Mbps, which may not be enough for HD video streaming. The user should try using a USB 3.0 port or a Thunderbolt connector, which have higher bandwidths and can support HD webcams. The Thunderbolt connector is compatible with USB devices, so it is not the cause of the issue. The VGA cable and the STP cable are not related to the webcam, as they are used for video output and network connection respectively.
upvoted 1 times
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JonHin
Most Recent 2 months, 2 weeks ago
A is correct The USB 2.0 port has insufficient bandwidth to support a high-definition webcam that can update 30 frames per second. USB 2.0 has a maximum theoretical bandwidth of 480 Mbps, which may not be enough for HD video streaming. The user should try using a USB 3.0 port or a Thunderbolt connector, which have higher bandwidths and can support HD webcams. The Thunderbolt connector is compatible with USB devices, so it is not the cause of the issue. The VGA cable and the STP cable are not related to the webcam, as they are used for video output and network connection respectively.
upvoted 1 times
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Nate_A
5 months, 2 weeks ago
The most likely cause of the issue is A. The USB 2.0 port has insufficient bandwidth. USB 2.0 has a limited bandwidth, which may not be sufficient to handle the high data rate required for high-resolution video capture. The webcam's ability to capture 30 frames per second requires significant bandwidth to transfer the image data to the computer. GG
upvoted 2 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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