FAYETTEVILLE, Ark.—The defense rested Tuesday in the Arkansas federal trial of former reality TV star Josh Duggar after a prosecutor sharply questioned a computer expert during the state’s cross-examination. Duggar, 33, is charged with receiving and possessing child pornography and faces up to 20 years in prison on each count if convicted. His federal trial began last week. The prosecution rested its case Monday, and Duggar’s attorneys began calling witnesses shortly after. Under questioning by Duggar’s attorneys, forensic computer analyst Michele Bush said the computer where child pornography was downloaded could have been accessed remotely. The defense has argued that someone else downloaded or placed the child pornography onto the computer at Duggar’s workplace, noting that no child pornography was found on Duggar’s phone or laptop. But Bush acknowledged to prosecutors that the 10 years of experience she claimed as a forensic computer analyst included time as a college student, …