I want the below hard questions done ASAP!

1.The LTI of a causal system has function H(z)=1/10.5z1+2/13z1. Determine the ROC of H(z).

2.When does a system become BIBO stable and causal?

3.Define another term that can be used to refer to the wireless Ethernet 802.11a.

4.Describe the layer present in the IEEE 802.11 protocol stack that has the function of flow control and error control.

5.Determine the truth value in the fact that there are no known successful attacks made against whirlpool.

6.Give an example of a collision free operation that is yet to be broken.

7.Determine the truth value of the statement that states that impersonation of another user is a passive attack in terms of web security threats.

8.Give examples of the three higher- layer SSL protocol.

9.Justify by stating whether the statement variance equals to [(v₁+ v₂- 2)] / [v₁* (v₂- 2)²* (v₂- 4)] for v₂> 4 in the case of f- distribution is true or false.

10. Describe by giving an example a distribution that is continuous.