CompTIA A+ Core 1 (220-1201)Mobile DevicesHard
A technician configures a smartphone's mobile hotspot with a 5 GB monthly data cap. During one session, the user streams video averaging 750 MB per hour for 4 hours and downloads a 1.2 GB software update. How much data remains under the cap after these activities?
- A2.0 GB
- B3.2 GB
- C0.8 GB
- D1.8 GB
Show answer & explanationAnswer & explanation
Correct answer: C. 0.8 GB
Video streaming: 750 MB × 4 hours = 3,000 MB = 3 GB. Adding the 1.2 GB update gives 4.2 GB total used. Subtracting from the 5 GB cap: 5 GB − 4.2 GB = 0.8 GB remaining.
Why the other options are wrong
- A. This ignores the update download in the calculation.
- B. This incorrectly adds instead of subtracting from the cap.
- D. This miscalculates the streaming total, underestimating usage.
Mobile Hotspot Data Cap
A configured data usage limit for a mobile hotspot connection, tracked in MB/GB to prevent overage charges.
- 1 GB = 1024 MB (or approximated as 1000 MB for billing)
- Streaming and downloads both count toward the cap
- MDM/carrier apps often alert users near the cap
Memory trick: Add up the bytes, then subtract from the cap.