Dynamatic Technologies Engineer Interview Questions and Answers

Android architecture stack is a set of layers that make up the Android operating system.

• The stack includes four main layers: Linux kernel, native libraries, Android runtime, and application framework.

• The Linux kernel provides low-level system functionality.

• Native libraries are written in C or C++ and provide access to hardware-specific features.

• The Android runtime includes the Dalvik virtual machine and core libraries.

• ...read more

AIDL stands for Android Interface Definition Language, used for inter-process communication in Android.

• AIDL is used to define the interface between client and service in Android.

• It allows communication between different processes in Android.

• AIDL is used to pass complex data types between processes.

• AIDL is similar to Remote Procedure Call (RPC) in other programming languages.

• Example: AIDL is used in Android to implement...read more

Hash set and hash map are data structures used to store key-value pairs for efficient retrieval.

• Hash set stores unique values without any specific order.

• Hash map stores key-value pairs and allows fast retrieval of values based on keys.

• Both use hashing to map keys to their corresponding values.

• In Java, HashSet and HashMap are implementations of these data structures.

3-2-1 principle of design is a rule of thumb for creating visually appealing designs.

• 3 elements: primary, secondary, and accent

• 2 fonts: one for headings and one for body text

• 1 focal point: the most important element in the design

• Example: using a bold primary color, a lighter secondary color, and a bright accent color

• Example: using a sans-serif font for headings and a serif font for body text

• Example: making the focal po...read more

Fool proofing of design ensures that the design is robust and can withstand errors or misuse.

• Identify potential errors or misuse scenarios

• Incorporate fail-safe mechanisms to prevent errors

• Provide clear instructions and warnings for proper use

• Conduct thorough testing and validation

• Continuously monitor and improve the design