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Information Technology Professional Knowledge
IT Networking

Practice IT Networking Questions and Answers

Question Listing

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?
What is the best-case time complexity of any comparison-based sorting algorithm?

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