choose the correct answer :

DDoS attacks bombard root DNS servers with traffic but not successful to date. (T\F)

In both SMTP and HTTP, each object encapsulated in its own response message and also both have ASCII command/response interaction, status codes.(T\F)

Proprietary protocols like Skype is defined in RFCs (T\F)

Packet switching does store and forward transmission?(T\F)

In circuit switching, only a fixed number of users can be supported by the link? (T\F)

There can be dependence and duplication of functionality at different layers?(T\F)

How many layers are present in internet protocol stack?

If you have a packet length L=16000 bit and the link transmission rate along the link is R= 100Mbps

What is the transmission delay?