in the context of access control , explain the concepts of access control matrix, access control list ,privilege control list and capability

Must a Huffman tree be a two-tree? Explain

QUESTION 1

1. Which of the following will correctly change the name of the LOCATIONS table to NEW_LOCATIONS?

   		ALTER TABLE LOCATIONS RENAME NEW_LOCATIONS
   		MODIFY TABLE LOCATIONS RENAME NEW_LOCATIONS
   		RENAME LOCATIONS TO NEW_LOCATIONS
   		None of the above, you cannot rename a table, you can only CREATE, ALTER and DROP a table.

1 points   

QUESTION 2

1. The data type of a column can never be changed once it has been created.

   True

   False

1 points   

QUESTION 3

1. The following code creates a table named student_table with four columns: id, lname, fname, lunch_num CREATE TABLE student_table (id NUMBER(6), lname VARCHAR(20), fname VARCHAR(20), lunch_num NUMBER(4)); The lunch_num column in the above table has been marked as UNUSED. Which of the following is the best statement you can use if you wish to remove the UNUSED column from the student_table?

   		DROP column
   		ALTER TABLE DELETE UNUSED COLUMNS
   		ALTER TABLE DROP UNUSED COLUMNS
   		ALTER TABLE DELETE ALL COLUMNS

1 points   

QUESTION 4

1. After issuing a SET UNUSED command on a column, another column with the same name can be added using an ALTER TABLE statement.

   True

   False

1 points   

QUESTION 5

1. Comments can be added to a table by using the COMMENT ON TABLE statement. The comments being added are enclosed in:

   		Double quotes " "
   		Single quotes ' '
   		Parentheses ( )
   		Brackets { }

1 points   

QUESTION 6

1. You can use the ALTER TABLE statement to:

   		Add a new column
   		Modify an existing column
   		Drop a column
   		All of the above

1 points   

QUESTION 7

1. ALTER TABLE table_name RENAME can be used to:

   		Rename a row
   		Rename a column
   		Rename a table
   		All of the above

1 points   

QUESTION 8

1. To completely get rid of a table, its contents, its structure, AND release the storage space the keyword is:

   		DROP
   		DELETE
   		TRUNCATE
   		KILL

1 points   

QUESTION 9

1. When should you use the SET UNUSED command?

   		Never, there is no SET UNUSED command
   		You should use it if you think the column may be needed again later
   		You should use it when the system is being heavily used
   		You should only use this command if you want the column to still be visible when you DESCRIBE the table

1 points   

QUESTION 10

1. You can use DROP COLUMN to drop all columns in a table, leaving a table structure with no columns.

   True

   False

In MatLab, Determine how many years it will take to accumulate at least $10,000 in

your bank account if you deposit $1000 initially and $500 at the end of

each year. The account pays 2.5% interest annually. At the end of each

year your loop should write a message to the user, for example: "After

year 1, the balance in your account is $xx,xxx.xx". Your script should

also write out the final balance after $10,000 is reached.

An employee suspects that his password has been compromised. He changed it two days ago, yet it seems someone has used it again. What might be going on?

Answer according to digital forensics

Discuss the importance of effective project management in following the workflow and achieving the specific project deliverables. Address appropriate strategies and methodologies for Software Development, or Web Design and Development. Be thorough. Take into consideration all stakeholders and identify both positive and negative potential outcomes

A cloud customer has asked you to do a forensics analysis of data stored on a CSP’s server. The customer’s attorney explains that the CSP offers little support for data acquisition and analysis but will help with data collection for a fee. The attorney asks you to prepare a memo with detailed questions of what you need to know to perform this task. She plans to use this memo to negotiate for services you’ll provide in collecting and analyzing evidence. Write a one- to two-page memo with questions to ask the CSP.

Answer according to digital forensics

I am trying to return a string from certain position of the sentence on C++, like a function/ statement that is equivalent to excel mid function.

An 8-bit byte with binary value 11001101 is to be encoded using an even-parity Hamming code.
What is the binary value after encoding?

A bit stream 10101010 is transmitted using the standard CRC method. The divisor is 1011.
Show the actual bit string transmitted. Suppose the second bit from the left is inverted during
transmission. Show that how this error is detected by the receiver?

What is the maximum size of the sender window and receiver windows for each of the following
protocols when the number of bits in the sequence field is 8?
c. Go-Back-N ARQ
d. Selective-Repeat ARQ

Compare and contrast the Go-Back-N ARQ Protocol with Selective-Repeat ARQ describing
the process of each protocol with a suitable example.

Pass or Fail (C++)

Given a vector, where each element in the vector is a [name, grade] pair sort range by name, partition range into pass and fail, preserving alphabetical order within partition. The grades are the number of points earned (600 points earns a passing grade).

std::vector<std::pair<std::string, int>> v {
{"josh", 851},
{"mark", 600},
{"charles", 412},
{"sebnem", 1000},
{"abdol", 905},
{"imen", 300}
};

--------EXPECTED OUTPUT-------------------------------------------------

std::vector<std::pair<std::string, int>> w {
{"abdol", 905},
{"josh", 851},
{"mark", 600},
{"sebnem", 1000}, // Everyone after this point failed
{"charles", 412},
{"imen", 300}
};

Note: NO LOOPS ALLOWED

Thanks!

Python 3.7.4:

The current calendar, called the Gregorian calendar, was introduced in 1582. Every year divisible by four was created to be a leap year, with the exception of the years ending in 00 (that is, those divisible by 100) and not divisible by 400. For ­instance, the years 1600 and 2000 are leap years, but 1700, 1800, and 1900 are not. Write a program that requests a year as input and states whether it is a leap year. We need to run this as many times as the user wants to check for leap years.

Below was marked incorrect for me. I need to put it in a while loop. Also, I'm curious if there is a way to do it without def? Do we have to call main? Sorry for all of the newbie questions. Thank you!

----------------------

def leap(year):
    if(year % 400 == 0):
        return True
    elif year % 100 == 0:
        return False
    elif year%4 == 0:
        return True
    else:
        return False
def main():
    year = int(input("Enter year: "))
    if(leap(year)):
        print(year,"is a leap year")
    else:
        print(year, "is not a leap year")
main()

Fibonacci (C++)

Generate 1st n fibonacci numbers:

std::vector<int> v = {1, 1, 2, 3, 5, 8, 13, 21};
auto w = fibonacci(8);

Note: NO LOOPS ALLOWED

Thanks!

Q#1 Write a C++ program that reads n integer values and stores them in an array of maximum 20 integers. Read from the user a valid value of n (n should not exceed 20). After reading the n array elements find the maximum and minimum elements. Q#2 Write a C++ program that reads 10 integer values and stores them in an array. The program should find and display the average of the array elements and how many elements are below the average. Q#3 Write a C++ program to read 10 temperatures in Celsius and to store the temperatures in an array of integers, then it should convert the temperatures to Fahrenheit and store the new values rounded to the nearest integer in another array . The program should display both temperatures in a table form. F = 9/5 x C + 32 where F is temp in Fahrenheit and C temperature in Celsius

Write a JAVA program to modify the insert and remove of a binary search tree to become an AVL tree.