The blank provides access to the internet may also be internal ? ?

The answer is : Modem .   It is a device that provides access to the Internet and it may also be internal. Modem is short for "Modulator / Demodulator." It is a hardware component that allows a computer or other device such as a router or switch, to connect to the Internet. It converts an analog signal from a cable wire to a digital signal that a computer can recognize.

which functions return a valid value without any arguments?

(-blank- and -blank- return a valid value without any arguments.)

1st -blank-

today

sqrt

count

2nd -blank-

round

now

sqrt

look at the engine block shown in the figure. the engine shown in this figure is a/an  

  a. four-cylinder, horizontally opposed engine.

  b. eight-cylinder, v-type engine.

  c. six-cylinder, v-type engine.

  d. four-cylinder, in-line engine