[{"id":17538,"question":"The data transmission mode in which data flows in one direction only is","choices":[{"text":"SImplex","value":"A"},{"text":"Half-duplex","value":"B"},{"text":"Full-duplex","value":"C"},{"text":"None of the above","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":17535,"question":"Data communication requires a","choices":[{"text":"Sender","value":"A"},{"text":"Receiver","value":"B"},{"text":"Medium","value":"C"},{"text":"All of the above","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":17528,"question":"A combination of four binary digits is called:","choices":[{"text":"Bit","value":"A"},{"text":"Nibble","value":"B"},{"text":"Byte","value":"C"},{"text":"None of the above","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":17527,"question":"Data can be in the form of","choices":[{"text":"Numbers","value":"A"},{"text":"Images","value":"B"},{"text":"Characters","value":"C"},{"text":"All of the above","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":17524,"question":"Which of the following layers in OSI model routes data from sender to receiver?","choices":[{"text":"Transport layer","value":"A"},{"text":"Application layer","value":"B"},{"text":"Physical layer","value":"C"},{"text":"Network layer","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":17522,"question":"Which of the following is not a function of presentation layer in OSI model?","choices":[{"text":"Manage coding schemes","value":"A"},{"text":"Check passwords","value":"B"},{"text":"Provide services for compression of data","value":"C"},{"text":"Provide services for encryption of data","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":17519,"question":"The layer next to the application layer in OSI model is","choices":[{"text":"Session layer","value":"A"},{"text":"Presentation layer","value":"B"},{"text":"Transport layer","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":2},{"id":17516,"question":"This layer is the OSI model provides network services to user applications","choices":[{"text":"Physical","value":"A"},{"text":"Transport","value":"B"},{"text":"Application","value":"C"},{"text":"Presentation","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":17512,"question":"OSI reference model has","choices":[{"text":"1 Layer","value":"A"},{"text":"3 layers","value":"B"},{"text":"6 layers","value":"C"},{"text":"7 layers","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":17510,"question":"This LAN access method that allows multiple devices to talk at once and a protocol determines which device receives priority","choices":[{"text":"CSMA/CD","value":"A"},{"text":"CSMA/CS","value":"B"},{"text":"CSMA/CR","value":"C"},{"text":"None of the above","value":"D"},{"value":"E"}],"correctAnswer":1}]