Few more links for practicing MCQs:

http://www.proprofs.com/quiz-school/story.php?title=grade-5-6-computer-basics



http://www.mastguru.com/computer-awareness-questions-answers-set-1/question/169



http://www.psexam.com/MCQ-Collection-for-Fundamentals-of-Computer/computer-fundamentals-objective-questions-mcq-with-solutions-and-explanations-set-1.html



http://books.tamilcube.com/career/general-knowledge/computer-knowledge/computer-knowledge-questions-001.aspx



http://dhakaresults.com/part-3-computers-basic-multiple-choice-questions-for-all-job-admission-test/



http://dhakaresults.com/part-2-computers-basic-mcq-questions-for-all-job-admission-test/