Is a foot on the line at the serve a fault?

Yes. You may not touch the end line or the court before you've struck the serve.

Is touching the net a fault?

Touching the net while playing the ball is a fault. Incidental contact outside the action is usually allowed.

Under the official FIVB rules, no. Some national and recreational competitions allow the libero to serve in one rotation — check your competition.

No. A block doesn't count, so your team still has three touches afterwards.

Two touches in a row by the same player is a fault — except on the first team touch (the pass/reception).

In. A ball touching any part of the line is good.

A held, caught or thrown ball is a fault — it must be a clean contact.

Yes. Any body part may touch the ball.

Only from behind the 3-metre line. From in front of it they may not attack a ball above net height.

At the moment of the serve the players aren't in the correct rotational order. That costs you the point.

A set to 25 with a two-point margin (deciding set to 15); a match is usually best of five.

A foot may touch the centre line as long as part stays on your side; fully crossing and interfering is a fault.

HOW2SPORTFootball

FOOTBALL

The key rules of football, from the basics to the situations beginners doubt most.

Two teams of 11 players (incl. a keeper); you win by scoring more goals.
A match lasts 2 × 45 minutes, with a break in between.
Only the goalkeeper may handle the ball, and only inside their own penalty area.
Common situations: offside, free kick, corner, throw-in and penalty.
A yellow card is a warning; two yellows = red and you're sent off.