Practice IT Networking Questions and Answers

• ATM is an example of
• ISP stands for
• A substitution cipher substitutes one symbol with
• We use Cryptography term to transforming messages to make them secure and immune to
• Man-in-the-middle attack can endanger security of Diffie-Hellman method if two parties are not
• Shift cipher is sometimes referred to as the?
• DNS client adds suffix atc.jhda.edu. before passing address to the
• In Message Confidentiality, transmitted message must make sense to only intended
• File Transfer Protocol (FTP), uses well-known port 21 is used for control connection and port 20 for the
• Mail access starts with client when user needs to download e-mail from the
• ELNET is a general-purpose
• Hyper Text Transfer Protocol (HTTP) support
• Which of the following components stores electrical charge in a circuit?
• What is the unit of electrical resistance?
• Which of the following is a semiconductor material used in electronic devices?
• Which of the following is a type of digital logic gate that performs the Boolean OR operation?
• Which of the following is a programming language commonly used for controlling electronic devices?
• What does the term "LED" stand for?
• What is the primary purpose of a router in a computer network?
• Which protocol is used for sending email messages over the internet?
• 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?