I shave every day, but my beard stays the same. What am I?

I am an eight letter word and I am a computer terminology.
The second, third and fourth letters make an animal.
The fourth, fifth, sixth, seventh and eighth letters make a weapon.
The first, second, third and fourth letters can be taken as an outcome of any exam.
The fifth, sixth, seventh and eighth letter combine to form a high end typing software.

Can you tell who am I ?

When it is alive we sing, when it is dead we clap our hands. What is it?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

What am I?

It's pretty hard to give up.
If you remove a part of it, you will be left with a bit.
Even if you remove another part, the bit still remains.
Remove one more and it still remains.

What is it?

Who has married many women but was never married?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?