: Focuses on the transmission of raw bits over various media (fiber optics, copper wire, wireless). The Data Link Layer
If you're unable to find PPT slides, here are some alternative resources that might be helpful: computer networks tanenbaum 6th edition ppt
If you are an instructor, the official Pearson slides are a starting point, not a final product. To engage modern students, consider these modifications: : Focuses on the transmission of raw bits