Answer:
Option B i.e., mdsswitch# show Vsan membership is the correct option.
Explanation:
The following commands is used by the engineer because it displays the membership of the VSAN( virtual storage area network). 
switch# command is used to enter the configuration mode. So, the engineer using the following commands to verify that the interfaces for the research department.
 
        
             
        
        
        
Answer: testing
Explanation:
Testing an answer with multiple attachments
 
        
             
        
        
        
The bachelor's program at Eth Zurich is 3 years.
I hope this helps!
:-)
        
             
        
        
        
Answer:
Following are the code to this question:
file= open('book.txt') #open file
li= {} #define an empty list
for lines in file: # use for loop Split file data into words
    d= lines.lower().strip(' !?').split() #define variable d that Add it to map
    for val in d: #define loop to store data  
        if val not in li: #check value is not in list
            li[val] = 0 #define list and assign value in 0
        li[val] = li[val] + 1 #Sort the book data and add its value  
m = sorted(li.items(),key = lambda x : -x[1]) #sorted value into the m variable  
print(m[:10]) #print value
Output:
please find the attachment.
Explanation:
In the given python code first, we open the file "book.txt", in next line, an empty list is defined, that uses the for loop which can be described as follows:
- In the for loop is used, that reads the file data, and defines a variable "d", that stores the values into the map.
 - 
In the next line another loop is used, that check file values, if values are the same type so, it adds values and writes it.  
 - In the last line, m variable is used, that sorts the values and use the slicing to print its value.