B. training is the correct answer
        
             
        
        
        
Answer:
RADIUS
Explanation:
RADIUS is the networking protocol that is used for the purpose of authentication to access the network resources. The full form of RADIUS is Remote Authentication Dial In User Service. It is used by different organizations, which setup their own network that can be accessible through VPN, DSL or modems through different networks. The purpose of this protocol is to establish the security and authentication mechanism by organization itself.
So, If an administrator needs to set up an authentication server for users connecting to a network through a VPN, he should establsih the RADIUS based Server.
 
        
             
        
        
        
Answer:
Operational excellence
Explanation:
Operational excellence is the execution of a business strategy more consistently and reliably than the competition.
Smooth delivery of services and reliability are key factors that are used to measure operational excellence in businesses.  
<em>The question is simply to test the understanding of the various concepts in business management .</em>
Package delivery and phone companies are businesses that relate directly with the general public, and they have a lot of competition. To thrive, they need operational excellence which covers the effective and consistent satisfaction of their customers.
 
        
             
        
        
        
Answer:
its easy
Explanation:
there are are 5 main rules 
in binary there are 2 number 0 and 1 
0 + 0 = 0
0 + 1 = 1
1+0=1
1+1=0 carry 1 
e . g 
  1 1 1
 1 0 1 0 1 0
+ 1 1 0 0 1 0
-------------------------
 1 1 1 1 1 0 0
*in bold are the ones that you need to carry.
in decimal there are 10 possible numbers 0- 9
when you do 1 + 9 it becomes 10, this can be done easily, however if you do 1 + 9 in a table like above, you will get 0 for the first column and you will carry 1 to the next column .
in binary is the same idea but using on 2 numbers 1 and 0
e.g 
 1
 1
+ 9
----------
 1 0
*in bold are the ones that you need to carry.
hope it helps and good luck in your exam.