Ports and connectivity (USB, HDMI, Wi-Fi) in Intro to Computing - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding USB Port Versions

Which USB port version provides the fastest data transfer speed?

A USB 2.0 with up to 480 Mbps

B USB 3.1 with up to 10 Gbps

C USB 1.1 with up to 12 Mbps

D USB 3.0 with up to 5 Gbps

💡 Hint

Think about the latest USB standards and their maximum speeds.

USB 3.1 supports data transfer speeds up to 10 Gbps, which is faster than USB 3.0 (5 Gbps), USB 2.0 (480 Mbps), and USB 1.1 (12 Mbps).

❓ trace

intermediate

Tracing HDMI Signal Flow

Consider a laptop connected to a monitor using an HDMI cable. Which of the following best describes the flow of video and audio signals?

A Laptop sends both video and audio signals through the HDMI cable to the monitor

B Laptop sends video only; audio is sent through a separate cable

C Monitor sends video and audio signals to the laptop

D HDMI cable only transmits audio signals

💡 Hint

Think about what HDMI cables are designed to carry.

HDMI cables transmit both video and audio signals from the source device (laptop) to the display device (monitor).

❓ identification

advanced

Identifying Wi-Fi Frequency Bands

Which Wi-Fi frequency band generally offers faster speeds but shorter range?

A 2.4 GHz band

B 900 MHz band

C 5 GHz band

D 1.8 GHz band

💡 Hint

Consider the trade-off between speed and range in wireless signals.

The 5 GHz Wi-Fi band provides faster speeds but has a shorter range compared to the 2.4 GHz band, which covers longer distances but at slower speeds.

❓ Comparison

advanced

Comparing USB and HDMI Ports

Which statement correctly compares USB and HDMI ports?

A USB ports can transmit data and power, HDMI ports transmit audio and video signals

B Both USB and HDMI ports transmit only power

C HDMI ports transmit data and power, USB ports transmit only audio

D USB ports transmit only video signals, HDMI ports transmit only data

💡 Hint

Think about what each port type is commonly used for.

USB ports transmit data and can supply power to devices. HDMI ports transmit audio and video signals but do not supply power.

🚀 Application

expert

Choosing the Best Connectivity for a Presentation Setup

You need to connect a laptop to a projector for a presentation. The projector supports HDMI and VGA inputs. The laptop has USB-C and HDMI outputs. Which connection method will provide the best video quality with the least hassle?

A Use a USB-C to USB-A cable

B Use an HDMI to VGA adapter cable

C Use a USB-C to VGA adapter cable

D Use a direct HDMI to HDMI cable connection

💡 Hint

Consider the compatibility and quality of signal transmission for each option.

Using a direct HDMI to HDMI cable provides the best video quality and simplest setup because both devices support HDMI natively. VGA is analog and lower quality, and USB-C to USB-A does not transmit video.