Answer the following questions regarding network security. Q.4.1 Read the statement below and then answer the question that follows. Statement: Using proxy servers has several advantages, including increased speed, reduced costs, improved management and stronger security. Evaluate the statement above by commenting critically on each claim made in the statement. Q.4.2 Rewrite the SaaS, PaaS and IaaS acronyms in full. State at least one security concern associated with any one of these models. NB: Only one security concern required for any one model.

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