Data compression techniques in SCADA systems - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to compress data using gzip in a SCADA system.

SCADA systems

import gzip

data = b"sensor data stream"
compressed_data = gzip.[1](data)

Drag options to blanks, or click blank then click option'

Acompress

Bdecompress

Copen

Dread

Attempts:

3 left

💡 Hint

Common Mistakes

Using decompress instead of compress

Trying to open data as a file

The gzip.compress function compresses the given data bytes.

2fill in blank

medium

Complete the code to decompress gzip data in a SCADA system.

SCADA systems

import gzip

compressed_data = b'\x1f\x8b\x08\x00'
decompressed_data = gzip.[1](compressed_data)

Drag options to blanks, or click blank then click option'

Awrite

Bopen

Ccompress

Ddecompress

Attempts:

3 left

💡 Hint

Common Mistakes

Using compress instead of decompress

Trying to open compressed data as a file

The gzip.decompress function restores compressed data to original form.

3fill in blank

hard

Fix the error in the code to correctly compress data using zlib.

SCADA systems

import zlib

data = b"control signals"
compressed = zlib.[1](data)

Drag options to blanks, or click blank then click option'

Adecompress

Bcompress

Cflush

Dopen

Attempts:

3 left

💡 Hint

Common Mistakes

Using decompress instead of compress

Using flush which is unrelated here

Use zlib.compress to compress data bytes.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that stores compressed sensor data only if size is less than 50 bytes.

SCADA systems

compressed_data = {sensor: zlib.[1](data) for sensor, data in sensors.items() if len(data) [2] 50}

Drag options to blanks, or click blank then click option'

Acompress

B>

C<

Ddecompress

Attempts:

3 left

💡 Hint

Common Mistakes

Using decompress instead of compress

Using > instead of < for filtering

Compress data with zlib.compress and filter data length less than 50 bytes.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that stores decompressed data for sensors with compressed size greater than 100 bytes.

SCADA systems

decompressed_data = {sensor: zlib.[1](data) for sensor, data in compressed_sensors.items() if len(data) [2] 100 and sensor.[3]('temp')}

Drag options to blanks, or click blank then click option'

Acompress

B>

Cstartswith

Ddecompress

Attempts:

3 left

💡 Hint

Common Mistakes

Using compress instead of decompress

Using < instead of > for length

Using wrong string method

Use zlib.decompress to restore data, filter compressed data length greater than 100, and sensors starting with 'temp'.