ECAT Pre Computer Science Chapter 4 online mcq test with answers for chapter 4 (Application and Use of Computers)

ECAT Computer Science Chapter 4 Computer Arithmetic & Number System Online Test

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

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