An access control list specifies the user-ID, the resources available to the user, and the level of permission granted.
Answer the following statement true (T) or false (F)
True
Rationale: PTS: 1
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Which of the following statements is false?
a. References to interface types do not have access to method toString. b. Method toString can be invoked implicitly on any object. c. With inheritance, classes and their inherited classes tend to be very similar. d. Dramatically different classes can often meaningfully implement the same interface.
Formulate the following queries in relational algebra, tuple relational calculus, and domain relational calculus.
The following tables form part of a database held in a Relational Database Management System: Employee (empID, fName, lName, address, DOB, sex, position, deptNo) Department (deptNo, deptName, mgrEmpID) Project (projNo, projName, deptNo) WorksOn (empID, projNo, hoursWorked) where Employee contains employee details and empID is the key. Department contains department details and deptNo is the key. mgrEmpID identifies the employee who is the manager of the department. There is only one manager for each department. Project contains details of the projects in each department and the key is projNo (no two departments can run the same project). and WorksOn contains details of the hours worked by employees on each project, and empID/projNo form the key. (1) List all employees. (2) List all the details of employees who are female. (3) List the names and addresses of all employees who are Managers. (4) Produce a list of the names and addresses of all employees who work for the ‘IT’ department. (5) Produce a list of the names of all employees who work on the ‘SCCS’ project.
To be eligible for bulk mailing rates, you must sort your data based on the ________ field
A) State B) Last Name. C) City D) ZIP code
Which of the following protocols provide confidentiality to the data messages (payloads) by ways of encryption?
a. ESP b. SHA-1 c. DES d. AES