[{"id":111726,"question":"The digits used for hexadecimal number system are.","choices":[{"text":"A through Z","value":"A"},{"text":"1 through 16","value":"B"},{"text":"0 through 15","value":"C"},{"text":"0 through 9 and A through F","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":111724,"question":"Alphanumeric characters are expressed in terms of binary codes. In ASCII (American standard Code for Information Interchange) each character is represented as a","choices":[{"text":"8 bit code","value":"A"},{"text":"4 bit code","value":"B"},{"text":"5 bit code","value":"C"},{"text":"7 bit code","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":111723,"question":"The main advantage of hexadecimal number is the case of conversion from hexadecimal to.","choices":[{"text":"ASCII code","value":"A"},{"text":"binary","value":"B"},{"text":"octal","value":"C"},{"text":"decimal","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":111721,"question":"The hexadecimal number system is widely used in analyzing and programming in.","choices":[{"text":"analog computers","value":"A"},{"text":"binary computers","value":"B"},{"text":"decimal computers","value":"C"},{"text":"micro computers","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":111720,"question":"Base 8 is often used in computing because.","choices":[{"text":"there are 8 bit in a byte","value":"A"},{"text":"calculations become easier by using base 8","value":"B"},{"text":"electronic circuits can be made econmically","value":"C"},{"text":"it can represent long strings of binary 1's an 0's in a more compact form","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":111719,"question":"The reason why computers have been designed to use binary numbers is.","choices":[{"text":"computer circuits have to handle 2 binary digits rather than 10","value":"A"},{"text":"electronic components, by their very nature, operate in a binary mode","value":"B"},{"text":"everything that can be done with a base of 10 can also be done in binary","value":"C"},{"text":"all of the above","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":111717,"question":"A letter, number, or a special character is represented by a.","choices":[{"text":"bit","value":"A"},{"text":"kilobyte","value":"B"},{"text":"byte","value":"C"},{"text":"megabyte","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":111716,"question":"Data items are generally classified into which type of codes","choices":[{"text":"Numeric","value":"A"},{"text":"Alphanumeric","value":"B"},{"text":"Character","value":"C"},{"text":"All of the above","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":111715,"question":"Data is represented on a computer by means of a two-state on/off system called","choices":[{"text":"the octal system","value":"A"},{"text":"the binary system","value":"B"},{"text":"a word","value":"C"},{"text":"ROM","value":"D"},{"value":"E"}],"correctAnswer":2}]