Answer:
The World Wide Web Consortium provide a simple online tool (https://validator.w3.org/) that automatically check your HTML code and point out any problems/errors your code might have, such as missing closing tags or missing quotes around attributes.
Explanation:
your question is not clear
hope it helps
 
        
             
        
        
        
Answer:
RJ-11 connector. 
Explanation:
RJ-11 (Registered Jack-11) also known as the phone line or modem port is a network cable having twisted wire pairs and a modular jack with two, four or six contacts. It is generally used with telephones and modem. 
Hence, the other connector type that can be used with CAT 3 installations is the RJ-11 connector.
 
        
             
        
        
        
Answer:
1. You want to use parameters
2. You don't want your program to run multiple times
3. You want to call that snippet of code throughout your program
hope this helped :D
 
        
             
        
        
        
Answer:
see explaination for program code 
Explanation:
scalar_product = 0
li=[]
li2=[]
#reading numbers1.txt and numbers2.txt intoli and li2 respectively
with open('numbers1.txt') as n1, open('numbers2.txt') as n2:
for line1 in n1:
li.append(int(line1))
for line2 in n2:
li2.append(int(line2))
#storing min list size into variable l
a=len(li)
b=len(li2)
if a<b:
l=a
else:
l=b
#calculating scalar product
for i in range(l):
scalar_product=scalar_product+li[i]*li2[i]
print("scalar product is",scalar_product)
 
        
             
        
        
        
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