diff --git a/presentations/01_CourseIntroduction.pptx b/presentations/01_CourseIntroduction.pptx
index d1ec4c2dfe7aa7e78936186a717af41f68d3f053..3149c9f76003bdf44237cbb2574f80b2062c0ca6 100644
Binary files a/presentations/01_CourseIntroduction.pptx and b/presentations/01_CourseIntroduction.pptx differ
diff --git a/presentations/03_TCPIP.pptx b/presentations/03_TCPIP.pptx
index 5b2ac9adcb5bbee2aae5a8343a068bf174070aec..cfeb46d5f8201f8c3a86fb7fef0282772a0ffb6a 100644
Binary files a/presentations/03_TCPIP.pptx and b/presentations/03_TCPIP.pptx differ