Practice IT Networking Questions and Answers

• Which logic gate has an output of 1 only when all inputs are 1?
• The symbol for a NAND gate is an AND gate followed by a:
• The truth table for an XOR gate has an output of 1 when:
• Which logic gate produces an output that is the logical sum of two or more inputs?
• The truth table for a NOR gate has an output of 0 when:
• Which logic gate produces an output that is the logical complement of the OR operation?
• The symbol for a NOT gate is a:
• What is an ER diagram used for?
• Which component of an ER diagram represents an entity?
• In an ER diagram, what does a diamond shape represent?
• Which relationship type indicates that an entity is associated with at least one instance of another entity?
• Which cardinality notation represents a mandatory relationship?
• In an ER diagram, what does a double line connecting two entities represent?
• Which component of an ER diagram represents an attribute?
• What does a crow's foot notation represent in an ER diagram?
• Which relationship type indicates that an entity is associated with exactly one instance of another entity?
• Which notation is used to represent a weak entity in an ER diagram?
•  Which network topology connects all nodes in a linear fashion?
• In which network topology does each node have a direct connection to every other node?
• Which network topology uses a central node to connect all other nodes?
• In which network topology is the failure of a single node least likely to disrupt the entire network?
• Which network topology requires the highest amount of cabling?
• In which network topology does data travel in only one direction around the loop?
• Which network topology is commonly used in Ethernet local area networks (LANs)?
• 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?