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3 years ago

A dns query failure is referred to a higher level domain name server under what condition

2 answers:

6 0

A DNS query (also known as a DNS request) is a demand for information sent from a user's computer (DNS client) to a DNS server. In most cases a DNS request is sent, to ask for the IP address associated with a domain name. An attempt to reach a domain is actually a DNS client querying the DNS servers to get the IP address, related to that domain.

Further Explanation:

The server at www.bleepingcomputer.com can't be found, because the DNS lookup failed. DNS is the network service that translates a website's name to its Internet address. This error is most often caused by having no connection to the Internet or a mis-configured network Condition of DNS query failure is referred to a higher level Domain Name Server The condition is when a flag is raised and it doesn't have enough information to allow the request. Within the Flags detail is a flag titled recursion desired. This flag shows whether or not the local DNS should continue to query other DNSs if it is not able to resolve the current query. As DNS is local, it may or may not have the enough information to allow the address to be resolved. If the recursion flag is set, the local DNS will continue to query higher level DNS until it is able to resolve the address.in short “The condition is when a flag is raised and it doesn't have enough information to allow the request”.

Learn more:

What type of dns record is used to delegate a dns zone?

brainly.com/question/6583162

Keywords: DNS, query, domain, server, IP adress, flags

zalisa [80]3 years ago

5 0

Within the Flags detail is a flag titled recursion desired. This flag shows whether or not the local DNS should continue to query other DNSs if it is not able to resolve the current query. As DNS is local, it may or may not have the enough information to allow the address to be resolved. If the recursion flag is set, the local DNS will continue to query higher level DNSs until it is able to resolve the address. In short, the condition is when a flag is raised and it doesn’t have enough information to allow the request.

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) Perform error checking for the data point entries. If any of the following errors occurs, output the appropriate error message

emmainna [20.7K]

Answer:

In Python:

entry = input("Sentence: ")

while True:

if entry.count(",") == 0:

print("Error: No comma in string")

entry = input("Sentence: ")

elif entry.count(",") > 1:

print("Error: Too many comma in input")

entry = input("Sentence: ")

else:

ind = entry.index(',')+1

if entry[ind].isnumeric() == False:

print("Comma not followed by an integer")

entry = input("Sentence: ")

else:

break

print("Valid Input")

Explanation:

This prompts the user for a sentence

entry = input("Sentence: ")

The following loop is repeated until the user enters a valid entry

while True:

This is executed if the number of commas is 0

if entry.count(",") == 0:

print("Error: No comma in string")

entry = input("Sentence: ")

This is executed if the number of commas is more than 1

elif entry.count(",") > 1:

print("Error: Too many comma in input")

entry = input("Sentence: ")

This is executed if the number of commas is 1

else:

This calculates the next index after the comma

ind = entry.index(',')+1

This checks if the character after the comma is a number

if entry[ind].isnumeric() == False:

If it is not a number, the print statement is executed

print("Comma not followed by an integer")

entry = input("Sentence: ")

If otherwise, the loop is exited

else:

break

This prints valid input, when the user enters a valid string

print("Valid Input")

Note that: entry = input("Sentence: ") is used to get input

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3 years ago

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Kitty [74]

Answer:

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Explanation:

I hope this helps

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2 years ago

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kykrilka [37]

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MaRussiya [10]

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Hope my answer helps you and solve your queries. 

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3 years ago

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RSB [31]

Answer:

Check the explanation

Explanation:

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