Edge computing basics in Intro to Computing - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

What is the main advantage of edge computing compared to cloud computing?

Imagine you have a smart home security camera that needs to detect motion quickly. Why would edge computing be better than sending all data to a distant cloud server?

A It reduces the delay because data is processed near the camera instead of far away.

B It stores all data permanently on the device without sending it anywhere.

C It requires no internet connection at all to work.

D It sends data to multiple cloud servers to increase security.

💡 Hint

Think about how fast the camera needs to react when it detects motion.

Edge computing processes data close to the source, reducing delay (latency). This is important for quick responses like motion detection.

❓ trace

intermediate

Trace the data flow in an edge computing setup

Consider a smart traffic light system using edge computing. Data from cameras is processed locally to detect cars and adjust lights. Then summary data is sent to the cloud for analysis.

Which step happens first?

A Data is sent to the cloud before any local processing.

B Data is processed locally at the edge device before sending summary to the cloud.

C Data is stored in the cloud and then sent back to the edge device.

D Data is ignored at the edge and only sent to the cloud.

💡 Hint

Remember edge computing means processing near the source first.

Edge devices process raw data locally to reduce the amount sent to the cloud, improving speed and reducing bandwidth.

❓ Comparison

advanced

Compare latency in edge vs cloud computing

Which graph best shows the difference in latency between edge computing and cloud computing for a smart factory sensor?

Intro to Computing

Options describe latency values in milliseconds for edge and cloud:
A: Edge: 10ms, Cloud: 100ms
B: Edge: 100ms, Cloud: 10ms
C: Edge: 50ms, Cloud: 50ms
D: Edge: 200ms, Cloud: 200ms

A Edge latency is 10ms and cloud latency is 100ms.

B Edge latency is 100ms and cloud latency is 10ms.

C Both edge and cloud latency are 50ms.

D Both edge and cloud latency are 200ms.

💡 Hint

Which is faster: processing near the device or far away?

Edge computing reduces latency by processing data close to the source, so latency is lower than cloud computing.

❓ identification

advanced

Identify which device is an edge device

Which of the following is an example of an edge device in an edge computing system?

A A data center hosting large databases.

B A cloud server storing data from many devices.

C A smartphone processing data locally before sending to cloud.

D A fiber optic cable transmitting data.

💡 Hint

Edge devices are near the user or data source and do some processing locally.

A smartphone processing data locally is an edge device. Cloud servers and data centers are centralized, and cables just transmit data.

🚀 Application

expert

Choose the best edge computing use case

Which scenario benefits most from edge computing?

Options:

• A factory robot needing instant response to sensor data
• A website hosting service for global users
• A cloud backup service for personal files
• A social media platform storing user posts

A A website hosting service for global users

B A social media platform storing user posts

C A cloud backup service for personal files

D A factory robot needing instant response to sensor data

💡 Hint

Think about which needs very fast local processing.

Edge computing is ideal for real-time, low-latency tasks like factory robots reacting instantly to sensors.