Programming & Computer Science Answers

Describe the steps involve in a Distributed Coordination Function using a simple carrier sense multiple access algorithm with an interframe space delay to transmit frames in a Wireless LAN

Describe the four units that makes IEEE 802.11 Architecture.

Describe the four abstraction layers of TCP/IP

Describe the four abstract layers of TCP/IP

Write a PL/SQL program to check whether a date falls on weekend i.e. SATURDAY or SUNDAY.

        // Calculate average (only if the user inputted any numbers
        if (count > 0)
            average = sum / (double) count;
        else
            average = 0;

Create your own code to add to the original program, after Line 30. The code you add should display whether the total number of values entered by the user (count)=(4), is small

(< 5) or large (>= 5). Use an If/Else statement.

1. List and explain any four(4) security mechanisms used for securing Wireless Network.
2. List and explain Cryptographic algorithm classifications.

given a sentence S. and a positive integer N. write a program to shift the sentence by N words to the right

INPUT

The first line pf input is a string S.

The second line of input is an integer N

OUTPUT

The output should be a single line containing the sentence by shifitng the N word to the right

EXPLANATION

in the example the sentence is python is a programming language and N is 2 shift the sentence two words to the right which means the last two words will be moved to the front.

so the output should be programming language python is a

sample input 1

Python is a programming language

2

sample output 1

programming language Python is a

sample input 2

Cats hate water

4

Sample output 2

water Cats hate

you given a list of prices where prices[i] is the price of a given stock o the i th day write a program to print the maximum profit by choosing a single day to buy a stock and choosing a different day in the future to sell that stock if these is no profit that can be achieved return 0

INPUT

the input is a single line containing space seperated integers

OUTPUT

the output should be an integer

Explanation

in the example the given prices are 7 1 5 3 6 4

buying stocks on day two having price 1 and selling them on the fifth day having price 6 would give the maximum profit which is 6 - 1

so the output should be 5.

sample input 1

7 1 5 3 6 4

sample output 1

5

sample input 2

1 11 13 21 19

sample output 2

20