9-9. Your computer sends a DNS request message to your local DNS server. After an unusually long time, your computer receives a
DNS response message that the host name in your request message does not exist. This is a host you use every day. a) List problems that may have happened and comment on their likelihood in broad terms like low. Give an explanation for your rating. (Draw the picture.)
1 answer:
Answer:
The three major problem, which arise there are as follows:
Internet issues, server issues, and server down.
Explanation:
All the issues can be described as follows:
- Internet issues may occur due to censure, cyber warfare, catastrophic events, efforts on the part of police and security utilities. It may also be known as the underwater communications, in which cable breakdowns cause disruptions to large parts.
- A power failure is also the most frequent cause of server failure. If you don't even have a backup generator, storms, natural catastrophes, and statewide power failures may shut your server off.
- It may be overloaded, that can trigger device crashes. Essentially, it's when too many users access the server simultaneously.
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Answer:
The given problem is solved using language - Python.
def f(x):
new_list=[]
for i in x:
if i%2==0:
new_list.append(i//2)
else:
new_list.append(i*2)
return new_list
my_list=list(range(1,6))
print('Original List:',my_list)
my_list=f(my_list)
print('Modified List:',my_list)
- Create a new list.
- Iterate over the list passed into the function.
- Check if the element is even or not. If true, append half the value of element in the list.
- If false, append twice the value of the element in the list.
- At last, return the new list.
There is another way of doing this - By using map() function.
—————————————————————————————
def f(x):
return list(map(lambda x:x//2 if x%2==0 else 2*x,x))
my_list=list(range(1,6))
print('Original List:',my_list)
my_list=f(2my_list)
print('Modified List:',my_list)
—————————————————————————————
Original List: [1, 2, 3, 4, 5]
Modified List: [2, 1, 6, 2, 10]