Which of the following system calls results in the sending of SYN packets?

What is the maximum size of data that the application layer can pass on to the TCP layer below?

If a class B network on the Internet has a subnet mask of 255.255.248.0, what is the maximum number of hosts per subnet?

Which of the following are NOT true in a pipelined processor?
$$1.$$ Bypassing can handle all RAW hazards
$$2.$$ Register renaming can eliminate all register carried WAR hazards
$$3.$$ Control hazard penalties can be eliminated by dynamic branch prediction.