ISRO2016-80

Question

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

• A. DNS lookup
• B. DNS hijacking
• C. DNS spoofing
• D. None of the mentioned

Comments

i think srestha/sharma....u r wrong.../////"host that has no authority giving that inforamtion, " /////not the the DNS giving wrong info.....

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DNS spoofing, also referred to as DNS cache poisoning, is a form of computer security hacking in which corrupt Domain Name System data is introduced into the DNS resolver's cache, causing the name server to return an incorrect result record, e.g. an IP address. This results in traffic being diverted to the attacker's computer (or any other computer).

Answer 1

(a)DNS lookup:- DNS lookup is the process by which a DNS record is returned from a DNS server. This is like looking up a phone number in a phone book - that is why it is referred to as a "lookup". Interconnected computers, servers and smart phones need to know how to translate the email addresses and domain names people use into meaningful numerical addresses. A DNS lookup performs this function.

(B)DNS Hijacking:- DNS hijacking mislead the user to a different website than the one he or she attempted to reach. DNS hijacking does not attempt to fool the user about the URL. It tries to grab all the user information while redirecting the user to a completely different site. For example: When any URL is not found for being invalid, the user is directed to a substitute page, usually with advertising. This new page looks nothing like the website the user was trying to reach.

(C)DNS Spoofing:-in DNS spoofing, the user is cheated of the URL he or she is trying to reach. He or she is directed to a lookalike fraudulent website.

Hence,Option(C)DNS Spoofing is the correct choice.

Answer 2

c) DNS spoofing