1. one argument in the security communit is that lack of diversity is itself a vulnerability. for example, the two dominant browsers, mozilla firefox and microsoft internet explorer, are use by approximately 95 percent of internet users. what security risk does this control of the market introduce? suppose there three (each with a significant share of the market). would three negate that security risk?

2. the workstation is a weak link in systems like pki and kerberos: a compromised
workstation can collect and transmit cleartext passwords and encryption keys.
suggest a means to prevent compromise of a workstation from, for example, a
trojan horse.

Corey set up his presentation for delivery to his team.the information he had to convey was critical to their job performance.he knew he would need a lot of time to explain each point

Acase study allows a more detailed look at the life of a single subject than any other study.

1. you have a small business that is divided into 3 departments: accounting, sales, and administration. these departments have the following number of devices (computers, printers, etc.): accounting-31, sales-28, and administration-13. using a class c private network, subnet the network so that each department will have their own subnet. you must show/explain how you arrived at your conclusion and also show the following: all available device addresses for each department, the broadcast address for each department, and the network address for each department. also, determine how many "wasted" (not usable) addresses resulted from your subnetting (enumerate them).