Practice IT Networking Questions and Answers

• What is the main advantage of using NoSQL databases for big data storage over traditional relational databases?
• Hadoop is an open-source framework commonly used for processing and analyzing big data. What is the primary component of Hadoop responsible for distributed...
• What does a "hash" represent in the context of blockchain?
• In a public blockchain, who can participate in the validation of transactions and creation of new blocks?
• In Generative Adversarial Networks (GANs), which component generates realistic data samples?
• What is the main drawback of using large batch sizes in mini-batch gradient descent during training?
• What is the primary advantage of using a snapshot-based backup method over traditional backup methods?
• In a distributed database system, what is the main challenge in implementing a robust backup and recovery strategy?
• Which data processing technique is commonly used for handling large-scale data in distributed computing environments?
• Which data mining technique is used to find patterns or associations in big datasets, such as market basket analysis?
• What consensus mechanism is used by the Bitcoin blockchain?
• What is a "51% attack" in the context of blockchain?
• What is a "smart contract" in the context of blockchain?
• Which activation function is typically used in the output layer of a regression task?
• Which technique is used to address the issue of class imbalance in a classification task?
• In digital electronics, a flip-flop is a sequential logic circuit capable of storing one bit of information. Which statement about flip-flops is true?
• In a database cluster setup, what is the purpose of a "warm standby" server?
• In the context of database backup, what does the term "point-in-time recovery" refer to?
• What is the primary characteristic that defines "big data"?
• In big data analytics, what is the process of identifying and correcting errors or inaccuracies in the collected data?
• How many stable states does a positive-edge-triggered D-type flip-flop have?
• What is the main disadvantage of using asynchronous (level-triggered) flip-flops in high-speed digital circuits?
• What is the primary purpose of residual connections in a deep neural network?
• In Variational Autoencoders (VAEs), what is the purpose of the "encoder" network?
• What is the primary advantage of using blockchain technology in transactions?
• What is the purpose of a "private blockchain"?
• You have a standard deck of 52 playing cards. What is the probability of drawing a red card (heart or diamond) from the deck?
• The ages of a group of 10 people are as follows: 25, 28, 30, 32, 35, 35, 38, 40, 42, and 45. Calculate the mean and median age of this group.
• How many different 3-letter words can be formed using the letters from the word "HATE2023"?
• Simplify the following Boolean expression using Boolean algebra laws: F = (A + B) * (A' + C) * (B + C)
• You have a positive-edge-triggered D flip-flop. If the current state is Q = 0 and the D input is 1, what will be the state after the clock edge?
• Arrange the following memory components in the memory hierarchy from the fastest to the slowest: Cache memory, Main memory (RAM), Hard disk.
• Given a 16-bit instruction format with 4 bits for the opcode and 12 bits for the address, calculate the maximum number of different opcodes that can be acc...
• State true or false The Arithmetic Logic Unit (ALU) is a crucial component of the CPU responsible for performing arithmetic and logical operations on data...
• State true or false Pipelining is a technique used in computer architecture to enhance instruction-level parallelism and improve the efficiency of the CPU...
• A resistor has a resistance of 100 ohms and a current of 2 amperes passing through it. Calculate the voltage drop across the resistor.
• A 240V, 10A electric heater is used. Calculate the power consumed by the heater.
• In a three-phase system, each phase has a voltage of 400V. Calculate the line voltage (phase-to-phase voltage) in the system.
• A transformer has a primary coil with 300 turns and a secondary coil with 150 turns. If the primary voltage is 240V, calculate the secondary voltage.
• State True or false TDMA is a communication technique used in wireless and digital networks to share a single channel among multiple users. In TDMA, the a...