IT Application Specialist Interview Questions and Answers

A port is a communication endpoint for sending and receiving data. The difference between TCP and UDP is their approach to data transmission.

• A port is a logical construct that identifies a specific process or network service on a host machine.

• TCP is a connection-oriented protocol that ensures reliable data transmission, while UDP is a connectionless protocol that does not guarantee delivery of data.

• Ports are identified by numbers ranging from 0 to 65535, with well-known ports...read more

Registers are small, fast storage locations in a computer's processor that hold data temporarily.

• Registers are used to store data that is frequently accessed by the processor.

• They are faster than accessing data from memory.

• Registers are used to hold data such as memory addresses, counters, and flags.

• They are also used to hold data during arithmetic and logical operations.

• Examples of registers include the program counter, stack pointer, and accumulator.

Kernel is the core of an operating system that manages system resources and provides services to other software.

• Kernel is responsible for managing memory, input/output requests, and system calls.

• It provides a layer of abstraction between hardware and software.

• Examples of kernels include Linux, Windows, and macOS.

• Kernel can be monolithic, microkernel, or hybrid in design.