True or False? 61. IS projects are distinct projects that must be kept away from the overall organization atmosphere - especially challenges - to be successful. T. True F. False 62. A potential source of challenge in IS projects is the nature of information technology. T. True F. False 63. The innovation diffusion theory suggests that as a new technology is introduced to the market, some people in the market are willing to adopt to the new technology and some would like to wait longer and not adopt to it very early. T. True F. False 64. According to the Porter's Five Forces model, the opportunities, threats, strength. weaknesses, and the firm's competitive advantage. T. True F. False 65. Key pertormance indicator (KPI) is a measure for assessing how much the effectiveness goals at the strategic level are met. T. True F. False 66. Waterfall project management is an adaptive project management methodology that is used for complex information technology and information science projects. T. True F. False 67. In the Scrum project management methodology, another name for each iteration of the project is sprinz. T. True F. False 68. Class B IPv 4 addresses have a 16 -bits subnet mask. T. True F. False 69. Referential integrity states that no foreign key attribute can remain null. T. True F. Faise 70. In a project in which the timing is based on the number of days each activity takes long, the sum of all free slacks. on the critical path of the project is always a positive number equal or: greater than 1 day. T. True: F. False