MEDDOC HEALTHCARE Interview Questions and Answers

TCP is a connection-oriented protocol while UDP is connectionless. TCP is used for reliable data transfer while UDP is used for real-time applications.

• TCP provides reliable, ordered, and error-checked delivery of data while UDP does not guarantee any of these

• TCP is used for applications that require high reliability and transmission speed, such as email, file transfer, and web browsing

• UDP is used for real-time applications such as online gaming, video conferencing, and live s...read more

Prototypes and functionality of socket, bind, listen, accept & connect

• socket() - creates a new socket

• bind() - assigns a local address to a socket

• listen() - puts a socket in a passive mode

• accept() - accepts a connection on a socket

• connect() - initiates a connection on a socket

Hashtable is not thread-safe while ConcurrentHashmap is thread-safe.

• Hashtable is a legacy class while ConcurrentHashmap is a modern class.

• Hashtable uses synchronized methods while ConcurrentHashmap uses lock striping.

• ConcurrentHashmap allows multiple threads to read and write concurrently.

• Hashtable is slower than ConcurrentHashmap in multi-threaded environments.

Implement find function for a string in C++.

• Use the find() function from the string class in C++ to search for a substring within a string.

• The find() function returns the position of the first occurrence of the substring, or string::npos if not found.

• Example: string str = 'hello world'; int pos = str.find('world');

Handshaking mechanism in TCP communication is a process of establishing and terminating a connection between two devices.

• TCP uses a three-way handshake mechanism to establish a connection.

• The three steps involved in the handshake are SYN, SYN-ACK, and ACK.

• During the handshake, the devices exchange information about the initial sequence numbers, window sizes, and other parameters.

• The handshake ensures that both devices are ready to communicate and establishes a reliable connec...read more

Realtime example of OOPs is modeling a car as an object with properties and methods.

• Create a Car class with properties like make, model, year, and methods like start, accelerate, brake.

• Instantiate multiple Car objects with different properties and call their methods.

• Demonstrate inheritance by creating a subclass ElectricCar with additional properties and methods.