Practice IT Networking Questions and Answers

• What is the function of an IP address in a computer network?
• Which network topology connects all devices in a linear chain?
• Which layer of the OSI model is responsible for routing and forwarding data packets?
• What is the purpose of DHCP in networking?
• What is the purpose of a firewall in network security?
• Which of the following is a commonly used network cable for wired Ethernet connections?
• Which component of the CPU is responsible for executing instructions?
• Which type of memory is directly accessible by the CPU for storing data and instructions during execution?
• What is the purpose of the clock in a computer system?
• Which architecture uses multiple processors to perform tasks simultaneously and improve performance?
• Which bus connects the CPU to main memory and transfers data and instructions?
• Which instruction cycle of the CPU fetches the next instruction from memory?
• Which component of a computer system is responsible for storing data and instructions even when the power is turned off?
• What is the purpose of the control unit in the CPU?
• Which technology allows a processor to execute multiple threads or processes simultaneously?
• What is an algorithm?
• Which of the following is NOT a characteristic of a good algorithm?
• What is the time complexity of an algorithm?
• Which sorting algorithm has a worst-case time complexity of O(n^2)?
• What is the purpose of Big O notation in algorithm analysis?
• What is the best-case time complexity of any comparison-based sorting algorithm?
• Which data structure follows the "last-in, first-out" (LIFO) principle?
• Which algorithm is used to search for a specific element in a sorted array by repeatedly dividing the search interval in half?
• What is the space complexity of an algorithm?
• Which algorithm solves the shortest path problem in a weighted graph?
• What is a database?
• What is the primary key in a relational database?
• Which type of database model organizes data into tables with rows and columns?
• What is the purpose of SQL (Structured Query Language) in database management?
• Which of the following is an example of a relational database management system (RDBMS)?
• What is the ACID acronym in database transactions?
• Which normal form ensures that there are no repeating groups of data within a table?
• Which of the following is NOT a type of database backup?
• What is the purpose of an index in a database?
• Which database operation is used to combine records from two or more tables based on related columns?
• What is a data structure?
• Which data structure follows the "first-in, first-out" (FIFO) principle?
• What is the time complexity of searching an element in a balanced binary search tree?
• Which data structure allows efficient insertion and deletion of elements at both ends?
• Which data structure stores elements in a sorted manner?