1.) B
2.) A
3.) D
4.) C
rand command returns a random number sqrt is going to return a decimal unless its a perfect square however the rand will not the now is quite obvious because it gives a time and date, while the other simply gives the date.
Answer:
A. grep -E "(John|Bob)" salesemployees.csv
Explanation:
The grep command is used to search text. It searches the given file for lines containing a match to the given strings or words.
How to use Grep Command:
grep 'letter' filename – Search any line that contains word 'letter' in filename on Linux
grep -i 'Alphabet' file1 – A case-insensitive search for the word ‘Alphabet’ in Linux and Unix
grep -R 'root' . – Search all files in the current directory and in all of its subdirectories in Linux for the word ‘root’
Answer:
O(n^2)
Explanation:
The number of elements in the array X is proportional to the algorithm E runs time:
For one element (i=1) -> O(1)
For two elements (i=2) -> O(2)
.
.
.
For n elements (i=n) -> O(n)
If the array has n elements the algorithm D will call the algorithm E n times, so we have a maximum time of n times n, therefore the worst-case running time of D is O(n^2)
Answer:
A.Big,Rectangular
Explanation:
mile markers are sign on high ways they are green signs they are big and rectangular shape
Answer: True
Explanation:
Yes, the given statement is true that the RFID tags are basically used in the secure system because it is impossible to counterfeit.
RFID basically stand for the radio frequency identification that provide a method to retrieve the data or information quickly from the system. It basically used as radio wave technology in which we can easily track the objects and people by using proper programmed data.
The tag is basically placed in the object for unique identification. There are basically two types of tags in the RFID that is active and passive.
