Andrews, Jean <br/><br/>
CompTIA A+ guide to IT technical support / 
Jean Andrews, Joy Dark, Jill West 
 - 9th ed. 
 - Boston :  Cengage Learning,  2017 
 - lxii, 1119 p. :  color ill.,  28 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781305266438 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic data processing personnel--Certification<br/>Microcomputers--Maintenance and repair--Examinations--Study guides<br/>Computer software--Examinations--Study guides<br/>Computer technicians--Certification--Study guides