Lecture 7 (medium)
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Lecture 7 (medium)

Created by
@LegendaryDecagon

Questions and Answers

What is the purpose of full-disk encryption in Android?

To protect user data by encoding all data on the device using symmetric encryption keys

Which feature does file-based encryption introduce in Android 7.0?

Encrypting directory layouts and file sizes

What type of data is encrypted by metadata encryption in Android?

File creation/modification times

Which security best practice involves ensuring the software collects only the necessary information?

<p>Collecting only the information required by the software</p> Signup and view all the answers

Why is the Secure Enclave used in iOS for biometric data processing?

<p>To provide an extra layer of security for user biometric data</p> Signup and view all the answers

What is a thread in the context of mobile application development?

<p>A thread is a lightweight way to implement multiple paths of execution inside an application.</p> Signup and view all the answers

What is the main advantage of having a multithreaded application?

<p>Increased responsiveness and real-time performance on multicore systems.</p> Signup and view all the answers

What are the challenges associated with multithreaded applications?

<p>Threads coordinate actions to prevent corruption of the application's state information.</p> Signup and view all the answers

What is a key rule for writing efficient code in mobile applications?

<p>Don't do work that you don't need to do.</p> Signup and view all the answers

What is the recommended approach to handle power consumption in mobile applications?

<p>Let the chip idle when using hardware and execute code in bursts to save energy.</p> Signup and view all the answers

What are the main challenges associated with multithreaded applications?

<p>Coordinating actions between threads to prevent corruption of application's state information.</p> Signup and view all the answers

What is the key rule for handling power consumption in mobile applications?

<p>Let the chip idle and avoid continuous polling for information.</p> Signup and view all the answers

Explain the purpose of full-disk encryption in Android.

<p>Full-disk encryption encrypts all data on the device to protect it from unauthorized access.</p> Signup and view all the answers

What type of data is encrypted by metadata encryption in Android?

<p>Sensitive file metadata such as file sizes and permissions.</p> Signup and view all the answers

What feature does file-based encryption introduce in Android 7.0?

<p>File-based encryption allows each user profile to have its own encrypted data partition.</p> Signup and view all the answers

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