Vision Software Solutions Technical Support Executive Interview Questions and Answers

Implementing naming of threads in a multi-threaded OS and implementing rand5 using rand7

• Use thread ID or thread name to name threads in a multi-threaded OS

• Implement a function that generates a random number between 1 and 7

• Use rejection sampling to implement rand5 using rand7

• Ensure thread names are unique to avoid confusion

• Test the implementation thoroughly to ensure correctness

Free uses metadata stored in the heap to determine the number of memory blocks to delete for arrays.

• Free stores metadata about the size of the allocated memory block in the heap.

• Free uses this metadata to determine the number of memory blocks to delete for arrays.

• For example, if an array of 10 integers was allocated, the metadata would indicate the size of the block as 40 bytes.

• Free would then use this information to d...read more

Difference between #define and const

• Both are used to define constants

• #define is a preprocessor directive and replaces all occurrences of the defined identifier with the given value

• const is a keyword and creates a read-only variable

• const is type-safe and has better scope control than #define

• Example: #define PI 3.14 vs const float PI = 3.14;

• Example: #define MAX(a,b) ((a)>(b)?(a):(b)) vs const int MAX = (a)>(b)?(a):(b);

OSI layers are a conceptual model that describes the communication functions of a network.

• Layer 1 (Physical): Transmits raw data bits over a physical medium

• Layer 2 (Data Link): Provides error-free transfer of data frames between nodes

• Layer 3 (Network): Routes data packets between networks

• Layer 4 (Transport): Provides reliable data transfer between end systems

• Layer 5 (Session): Establishes, manages, and terminates sessi...read more

Structure refers to the arrangement or organization of something.

• Structure is the way something is put together or organized.

• It can refer to physical objects, such as buildings or bridges, or abstract concepts, such as language or music.

• Examples of structures include the skeletal structure of a human body, the organizational structure of a company, and the grammatical structure of a sentence.

Code for creating a node in linked list

• Create a struct for the node with data and pointer to next node

• Allocate memory for the node using malloc()

• Assign data to the node

• Assign the next pointer to NULL or the next node in the list

Encoders and decoders are used to convert data from one format to another.

• Encoders convert analog signals to digital signals.

• Decoders convert digital signals to analog signals.

• Encoders are used in devices like cameras, sensors, and audio equipment.

• Decoders are used in devices like televisions, radios, and DVD players.

One cryptographic technique is RSA, which uses public and private keys to encrypt and decrypt data.

• RSA stands for Rivest-Shamir-Adleman, named after its creators.

• It is a widely used asymmetric encryption algorithm.

• RSA uses a public key to encrypt data and a private key to decrypt it.

• The security of RSA is based on the difficulty of factoring large prime numbers.

• RSA is used in various applications such as secure communi

B-Tree is a self-balancing tree data structure with multiple child nodes and is used for efficient disk access.

• B-Tree has a root node, internal nodes, and leaf nodes.

• Each node can have multiple child nodes.

• The number of child nodes is fixed for a given B-Tree.

• B-Tree is self-balancing, which means that the height of the tree is minimized.

• B-Tree is used for efficient disk access as it reduces the number of disk accesses ...read more

I would bring my technical expertise and passion for problem-solving to contribute to Microsoft's mission of empowering people and organizations.

• I would familiarize myself with Microsoft's products and services to better assist customers

• I would actively seek out opportunities to learn and improve my skills

• I would collaborate with my team and other departments to provide the best support possible

• I would prioritize custo...read more