Why cloud computing enables scale in Intro to Computing - Draw It to Prove It

Draw This - beginner

Draw a flowchart that explains why cloud computing enables scale. Include steps showing how resources are allocated dynamically, how demand is monitored, and how additional resources are added automatically when needed.

10 minutes

Hint 1

Hint 2

Hint 3

Hint 4

Grading Criteria

Start and End symbols present

Decision diamond correctly used for demand check

Separate paths for high and low demand

Steps showing resource allocation and release

Flow leads to system running with adjusted resources

Solution

  +---------------------+
  | Start               |
  +----------+----------+
             |
             v
  +---------------------+
  | Monitor user demand  |
  +----------+----------+
             |
             v
  +---------------------+
  | Is demand high?     |
  +----+----------+-----+
       |          |
      Yes        No
       |          |
       v          v
  +---------------------+    +---------------------+
  | Allocate more       |    | Release unused      |
  | cloud resources     |    | cloud resources     |
  +----------+----------+    +----------+----------+
             |                          |
             +------------+-------------+
                          |
                          v
               +---------------------+
               | System runs with    |
               | adjusted resources  |
               +----------+----------+
                          |
                          v
                   +--------------+
                   | End          |
                   +--------------+

This flowchart starts by monitoring the current user demand on the system. It then checks if the demand is high. If yes, the cloud system automatically allocates more resources like servers or storage to handle the load. If the demand is not high, it releases any unused resources to save cost. Finally, the system runs with the adjusted resources, scaling up or down as needed. This dynamic allocation and release of resources is why cloud computing enables easy and efficient scaling.

Variations - 2 Challenges

[intermediate] Draw a flowchart explaining how cloud computing scales automatically during a sudden spike in website visitors.

[advanced] Draw a detailed flowchart showing how cloud computing scales resources both up and down based on continuous monitoring of multiple factors like CPU usage, memory, and network traffic.

Practice

1. What is the main reason cloud computing enables easy scaling for businesses?

easy

A. It limits the number of users who can access the system.

B. It allows adding or removing resources quickly based on demand.

C. It requires buying expensive hardware upfront.

D. It only works with small applications.

Solution

1. Step 1: Understand cloud resource flexibility

   Cloud computing lets businesses add or remove computing power easily.

2. Step 2: Connect flexibility to scaling

   This flexibility means businesses can handle more or fewer users smoothly.

3. Final Answer:

   It allows adding or removing resources quickly based on demand. -> Option B

4. Quick Check:

   Cloud flexibility = Easy scaling [OK]

Hint: Think about adding/removing resources fast [OK]

Common Mistakes:

• Confusing cloud with buying physical servers
• Thinking cloud limits users
• Believing cloud only supports small apps

2. Which of the following is the correct way to describe scaling in cloud computing?

easy

A. Scaling means adjusting resources like CPU and memory as needed.

B. Scaling means buying more physical servers only.

C. Scaling means reducing the number of users allowed.

D. Scaling means turning off the cloud service permanently.

Solution

1. Step 1: Define scaling in cloud context

   Scaling means changing computing resources like CPU, memory, or storage.

2. Step 2: Match definition to options

   Only adjusting resources like CPU and memory as needed correctly describes scaling.

3. Final Answer:

   Scaling means adjusting resources like CPU and memory as needed. -> Option A

4. Quick Check:

   Scaling = Adjust resources [OK]

Hint: Scaling adjusts resources, not just hardware purchase [OK]

Common Mistakes:

• Thinking scaling only means buying hardware
• Confusing scaling with user limits
• Misunderstanding scaling as service shutdown

3. Consider a website hosted on cloud servers. If the number of visitors suddenly doubles, what will likely happen in a cloud environment?

medium

A. The website blocks half of the visitors to reduce load.

B. The website crashes because cloud servers cannot scale.

C. The cloud reduces server resources to save money.

D. The cloud automatically adds more servers to handle the extra visitors.

Solution

1. Step 1: Understand cloud auto-scaling

   Cloud services can add more servers automatically when demand increases.

2. Step 2: Apply to visitor increase scenario

   When visitors double, cloud adds servers to keep the website running smoothly.

3. Final Answer:

   The cloud automatically adds more servers to handle the extra visitors. -> Option D

4. Quick Check:

   More visitors = More servers added [OK]

Hint: More visitors trigger more servers automatically [OK]

Common Mistakes:

• Assuming cloud cannot scale automatically
• Thinking cloud reduces resources on demand increase
• Believing website blocks visitors instead of scaling

4. A company tries to scale their cloud application but notices performance is slow. Which of these is a likely error in their scaling approach?

medium

A. They added more resources but did not configure the application to use them.

B. They removed all cloud resources to save money.

C. They increased resources and the app speed improved immediately.

D. They used cloud scaling correctly with no issues.

Solution

1. Step 1: Identify scaling misconfiguration

   Adding resources alone is not enough; the app must be set to use them.

2. Step 2: Analyze performance issue

   If performance is slow despite more resources, likely the app isn't configured properly.

3. Final Answer:

   They added more resources but did not configure the application to use them. -> Option A

4. Quick Check:

   Resources + config needed = Good performance [OK]

Hint: Adding resources needs app setup to use them [OK]

Common Mistakes:

• Assuming adding resources always fixes speed
• Confusing removing resources with scaling
• Ignoring app configuration after scaling

5. A startup expects fluctuating user traffic: high during the day and low at night. How can cloud computing help them save costs while ensuring good performance?

hard

A. By buying fixed hardware that handles the highest traffic all the time.

B. By shutting down the service at night to save money.

C. By scaling resources up during the day and down at night automatically.

D. By ignoring traffic changes and using the same resources always.

Solution

1. Step 1: Understand cost and performance needs

   The startup needs more resources when traffic is high and fewer when low to save money.

2. Step 2: Apply cloud scaling features

   Cloud can automatically increase resources during busy times and reduce them when traffic drops.

3. Final Answer:

   By scaling resources up during the day and down at night automatically. -> Option C

4. Quick Check:

   Auto scale up/down = Cost saving + performance [OK]

Hint: Scale resources with traffic changes automatically [OK]

Common Mistakes:

• Buying fixed hardware wastes money at low traffic
• Shutting down service loses users
• Ignoring traffic changes wastes resources