Qatar Design Consortium Engineer Interview Questions and Answers

Name mangling is a technique used by compilers to give unique names to functions and variables to avoid naming conflicts.

• Name mangling is used in C++ to support function overloading.

• It is also used in Python to avoid naming conflicts in modules.

• Name mangling can make it difficult to access variables and functions from outside the class in which they are defined.

• In C++, name mangling can be seen by using the 'nm' comman

Swapping two numbers without using a temp variable

• Use arithmetic operations to swap the values

• Add the two numbers and store the result in the first variable

• Subtract the second variable from the result and store it in the second variable

• Subtract the second variable from the first variable to get the original value of the second variable

• Example: a=5, b=7; a=a+b=12, b=a-b=5, a=a-b=7

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.

Checking points in beam and column are critical for ensuring structural integrity.

• Checking for cracks or deformations

• Ensuring proper alignment and levelness

• Verifying adequate reinforcement

• Checking for proper bearing and connection details

• Using non-destructive testing methods

• Following applicable codes and standards