Examining header of a message:

“Yes”, one should be able to see the sender's IP address for a user with an .edu email address, but he or she will not be able to see the sender's IP address if the user uses a Gmail account.

An .edu email address represents a domain name which belongs to most educational universities.

Example:

Let an email address be: Stephen.s@stanford.edu.in.

Here, as Stanford is an educational institute, it uses .edu domain name...

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Chapter 2, Problem R19RQ

Chapter 2, Problem R21RQ

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For DNS query, it is natural to expect that the local DNS server may not know how to resolve an address. In this case, further queries will be made by this local DNS server. If a hacker can find "a way" to make a certain DNS server report back the wrong IP address, then anyone trying to get to one Web address will be sent to a bogus one, without any obvious way for the user to detect that anything is wrong. Likewise, email could be delivered to the wrong destination. 1) Describe two possible attacks to make the resolver report the wrong IP address.

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Chapter 2 Solutions

EBK COMPUTER NETWORKING

Ch. 2 - List five nonproprietary Internet applications and...Ch. 2 - Prob. R2RQ Ch. 2 - Prob. R3RQ Ch. 2 - Prob. R4RQ Ch. 2 - Prob. R5RQ Ch. 2 - Prob. R6RQ Ch. 2 - Prob. R7RQ Ch. 2 - Prob. R8RQ Ch. 2 - Prob. R9RQ Ch. 2 - Prob. R10RQ

Ch. 2 - Why do HTTP, SMTP, and POP3 run on top of TCP...Ch. 2 - Prob. R12RQ Ch. 2 - Prob. R13RQ Ch. 2 - Prob. R14RQ Ch. 2 - Prob. R15RQ Ch. 2 - Prob. R16RQ Ch. 2 - Prob. R17RQ Ch. 2 - From a users perspective, what is the difference...Ch. 2 - Prob. R19RQ Ch. 2 - Prob. R20RQ Ch. 2 - Prob. R21RQ Ch. 2 - Prob. R22RQ Ch. 2 - Prob. R23RQ Ch. 2 - Prob. R24RQ Ch. 2 - Prob. R25RQ Ch. 2 - In Section 2.7, the UDP server described needed...Ch. 2 - Prob. R27RQ Ch. 2 - Prob. P1P Ch. 2 - Prob. P2P Ch. 2 - Prob. P3P Ch. 2 - Prob. P4P Ch. 2 - Prob. P5P Ch. 2 - Prob. P6P Ch. 2 - Prob. P7P Ch. 2 - Prob. P8P Ch. 2 - Prob. P9P Ch. 2 - Prob. P10P Ch. 2 - Prob. P11P Ch. 2 - Prob. P13P Ch. 2 - Prob. P14P Ch. 2 - Prob. P15P Ch. 2 - Prob. P16P Ch. 2 - Prob. P17P Ch. 2 - Suppose you can access the caches in the local DNS...Ch. 2 - Prob. P21P Ch. 2 - Prob. P22P Ch. 2 - Prob. P23P Ch. 2 - Prob. P25P Ch. 2 - Prob. P26P Ch. 2 - Prob. P27P Ch. 2 - Prob. P28P Ch. 2 - Prob. P29P Ch. 2 - Prob. P30P Ch. 2 - Prob. P31P Ch. 2 - Prob. P32P

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Solution Summary: The author explains that an.edu email address represents a domain name which belongs to most educational universities.

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Chapter 2 Solutions