Practice IT Networking Questions and Answers

• Which layer of the OSI model is responsible for establishing, managing, and terminating network connections?
• Which layer of the OSI model provides flow control, error checking, and reliability in data transmission?
• Which layer of the OSI model is responsible for addressing and routing data across multiple networks?
• Which layer of the OSI model is responsible for converting data into a format suitable for transmission over the network?
• Which layer of the OSI model provides services for file transfer, email, and network management?
• Which layer of the OSI model is responsible for encrypting and decrypting data for security purposes?
• Which layer of the OSI model deals with electrical, mechanical, and physical aspects of data transmission?
• Which layer of the OSI model interacts directly with the user or application software?
• What is the unit of electric current?
• What is the basic component of an electronic circuit that restricts the flow of current?
• Which type of circuit allows current to flow in only one direction?
•  Which component is used to store electric charge in an electronic circuit?
• What is the SI unit of electric potential difference?
• Which component amplifies or switches electronic signals and is a fundamental building block of modern electronic devices?
• Which circuit configuration has a single path for current flow?
• Which component allows current to flow in one direction and blocks it in the opposite direction?
• Which type of memory can be both read from and written to by the processor?
• Which type of memory is faster to access and closer to the processor, providing temporary storage for frequently used data?
• Which type of memory can be electrically erased and reprogrammed in blocks or sectors?
• Which type of memory is pre-programmed with data during the manufacturing process and cannot be modified?
• Which type of memory is designed to provide high-speed access to frequently used data and instructions?
• Which type of memory is used for firmware and contains the initial boot-up instructions for a computer system?
• Which command is used to create a new file in a Unix/Linux system?
• Which command is used to display the contents of a file in a Unix/Linux system?
• Which command is used to rename a file in a Unix/Linux system?
• Which command is used to delete a file in a Unix/Linux system?
• Which command is used to copy a file from one location to another in a Unix/Linux system?
• Which command is used to change the permissions of a file in a Unix/Linux system?
• Which command is used to search for a specific pattern in a file in a Unix/Linux system?
• Which command is used to append the contents of one file to another file in a Unix/Linux system?
• Which command is used to sort the lines of a file in a Unix/Linux system?
• Which command is used to count the number of lines, words, and characters in a file in a Unix/Linux system?
• Which of the following is a boolean function?
• How many possible boolean functions can be defined on n variables?
• Which boolean operator represents logical AND?
• The truth table for a boolean function with two variables, A and B, has four rows. How many different boolean functions can be defined with two variables?
• Which of the following is the boolean expression for the XOR function?
• The boolean function f(x, y, z) = (x AND y) OR (NOT(y) AND z) is equivalent to which of the following boolean expressions?
• Which boolean function returns true if and only if all input variables are true?
• The boolean function f(x, y) = x OR (NOT(y)) is equivalent to which of the following boolean expressions?