Which port number is commonly used for the hypertext transfer protocol service?

Explain why it is reasonable to assume that receiving 3 duplicate acks in tcp is an indication that the network is not currently congested.

All of these are true about using adhesive except: a. dissimilar materials can be joined. b. mixing tips are product and material specific. c. a specific application gun may be required. d. two-part adhesives are dispensed using two mixing tips

This isn't about school but every time it tells me to watch an ad to unlock the answer to a question it prompts a survey and it just keeps loading. so i haven't been able to get answers for my tests in like a week.