Answer:
D. A DNS server asks another DNS server to resolve a domain name
Explanation:
DNS (Domain name system) queries are essentially of two types;
i. recursive address resolution
ii. iterative or non-recursive address resolution
=> In the <em>recursive address resolution</em>, which represents a recursive query, when a DNS server A, receives a request from a client and does not know how to resolve such request, the DNS server sends the query to another DNS server B on behalf of this client. DNS server B can either reply to the query with the actual answer or an error message. If it's an actual answer, it returns to the client. Otherwise, it queries another DNS server, say C.
=> In the <em>iterative address resolution</em>, once the DNS server A receives a request from the client, it tries to reply the client with the best answer it can give. If the DNS server A does not have an answer, it refers the client to another DNS server say B. In this case, the server A does not directly query the server B. Instead, it refers the client to the server B.
1.
first = float(input("First Entry = "))
second = float(input("Second Entry = "))
def func(num1, num2):
return max(num1, num2)
print(func(first, second))
2.
first = input("First Entry = ")
second = input("Second Entry = ")
def func(word1, word2):
return sorted([word1,word2])[0]
print(func(first, second))
I hope this helps!
Answer:
Follwing is the python code:-
word=str(input("Enter the string\n"))
new=word[0:3] #expression for first three characters of the string.
print(new)
Output:-
Enter the string
chandelier
cha
Explanation:
The expression word[0:3] is for extracting first three characters form the string.
word[0:3] = It extracts characters from index 0 to index 2 it does not include 3.3 is excluded.
Answer:
You should install a personal firewall, a program that protects your computer from unauthorized access by blocking certain types of communications.
Explanation:
In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. A firewall typically establishes a barrier between a trusted internal network and untrusted external network, such as the Internet.
The best and most correct answer among the choices provided by the question is the third choice "It will be a space laboratory for scientists"<span>
The main purpose of the International Space Station<span> is to provide an </span>international<span> laboratory for experiments within the </span>space<span> environment. Which, despite all our technological advances, is nearly impossible to replicate here on Earth.
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I hope my answer has come to your help. God bless and have a nice day ahead!</span>
