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When a DNS server accepts and uses incorrect information from a host that has no authority giving that information, then it is called 
1. DNS lookup
2. DNS hijacking
3. DNS spoofing 
4. None of the mentioned 

1 Answer

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Correct Answer - Option 3 : DNS spoofing 

Spoofing 

It is the act of disguising a communication from an unknown source as being from a known, trusted source. Spoofing can apply to emails, phone calls, and websites, or can be more technical, such as a computer spoofing an IP address, Address Resolution Protocol (ARP), or Domain Name System (DNS) server.

Explanation:

Therefore when a DNS server accepts and uses incorrect information from a host that has no authority giving that information, then it is called DNS spoofing.

Option 3 is correct 

DNS lookup

In computer networks, DNS lookup is the querying technique of the Domain Name System (DNS) to determine an IP address, associated with a domain name.

DNS hijacking

It is also named DNS redirection, is a type of DNS attack in which DNS queries are incorrectly resolved in order to unexpectedly redirect users to malicious sites.

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