(a) It is a computer network in which users can access a shared pool of computing resources through a service provider.

(b) It is a private computer network of an organisation where the remote users can transmit encrypted information through the server of the organization.

(c) It is a computer network across a public internet that provides users access to their organization's network while maintaining the security of the information transmitted.

(d) None of the above statements

(a) When inhaled into the human body CO is converted into carbon dioxide

(b) The inhaled CO destroys the chemical structure of haemoglobin

(c) The inhaled CO has much higher affinity for haemoglobin as compared to oxygen

(d) The inhaled CO adversely affects the respiratory centre in the brain