Questions and Answers on Direct Memory Access

A microporgram is sequencer perform the operation A. | Read | B. | write | C. | Execute | D. | Read and execute | Answer D
_____________________________________________________________________________________ | The control unit of computer A. | Performs ALU operations on the data | B. | Controls the operation of the output devices | C. | Is a device for manually operating the computer | D. | Direct the other unit of computers | Answer D
_____________________________________________________________________________________ | Which of the following is a set of general purpose internal registers? A. | Stack | B. | Scratch pad | C. | Address register | D. | Status register | Answer B
_____________________________________________________________________________________ | P : “Program is a step by step execution of the instructions”. Given P, which of the following is true ? A. | Program is a subset of an instruction set. | B. | Program is a sequence of a subset of an instruction set. | C. | Program is a partially ordered set of an instruction set. | D. | All of the above | Answer B
_____________________________________________________________________________________ | Interrupts which are initiated by an I/O drive are A. | Internal | B. | External | C. | Software | D. | All of above | Answer B
_____________________________________________________________________________________ | What is meant by a dedicated computer? A. | Which is used by one person only | B. | Which is assigned to one and only one task | C. | Which does one kind of software | D. | Which is meant for application software only | Answer B
_____________________________________________________________________________________ | In which addressing mode the operand is given explicitly in the instruction A. | Absolute | B. | Immediate | C. | Indirect | D. | Direct |