Usually a Xeon is the fastest. Matters what time it was built and the chipset. If its old, the i7 is faster.
Answer:
No you can not tell that recursion is ever required to solve a problem.
Recursion is required when in the problem, the solution of the input depends on the solution of the subsets of the input.
Iteration is also another form of repetitive approach we follow to solve that kind of problems.
But the difference between recursion and iteration is :
- In recursion we call the function repeatedly to return the result to next level.
- In iteration certain bunch of instructions in a loop are executed until certain conditions met.
Explanation:
For example in the Fibonacci sequence problem, to find 
, we need to compute 
and 
before that.
- In case of recursion we just call the method Fibonacci(n) repeatedly only changing the parameter Fibonacci(n-1), that calculates the value and return it.
Fibonacci(n)
1. if(n==0 or n==1)
2. return 1.
3.else
4. return( Fibonacci(n-1)+Fibonacci(n-1) )
- But in case of iteration we run a loop for i=2 to n, within which we add the value of current
and 
to find the value of 
Fibonacci(n)
1. if(n<=2)
2. result = 1
3. else
4. result1 =1 and result2=1.
5. { result = result1 +result2.
6. result1= result2.
7. result2 = result.
8. }
9. output result.
Answer:
Hide command suppresses the visibility of a particular row or column in a worksheet
Explanation:
Hide command is used to hide the row or column in an excel worksheet. To suppress the visibility of a particular row or column in a worksheet, you have to select that particular row or column and then right-click on column or row header. A popup screen will appear as like when you refresh the computer. Then on this screen, at the bottom, you will find the hide command, click the hide command. And, as you click the hide command that particular row or column will become invisible. if you want to show it again, click the Unhide command. Therefore, hide command suppresses the visibility of a particular row or column.
Why other options are not correct
Autofit
Autofit command is used when you want that a particular cell of row or column to automatically adjust / or accommodate the content. Autofit command does not affect the visibility of a row or column.
Insert
Insert command is used to insert contents in a particular worksheet. Insert command is based on groups of various commands such as inserting tables, charts, graphs, text, symbols, add-ins, sparklines, and links.
Replace
Replace command is used in excel to replace the text with some other text. If you want to replace some text with some other text, then you have to use the replace command.
Solution :
- Loopback plug --- confirm interface functionality
It is a connector that is used to diagnose the transmission problems.
- Protocol Analyzer --- Analyze network traffic
It is used to capture and analyze the signals as well as data traffic.
- Throughput tester - Measure link speed
- Time Domain Reflectometer (TDR) - Determining the location of cable fault
It is used in determining the characteristics of the electrical lines by observing the reflected waveforms
- Locating a specific cable - Toner probe
off the top of my head I think this might be (CSMA/CD)
