CISSP-ISSMP Question #211: Real Exam Question with Answer & Explanation

Question

Which of the following can be done over telephone lines, e-mail, instant messaging, and any other method of communication considered private.

Options

• AShielding
• BSpoofing
• CEavesdropping
• DPackaging

Explanation

Eavesdropping is the process of listening in private conversations. It also includes attackers listening in on the network traffic. For example, it can be done over telephone lines (wiretapping), e-mail, instant messaging, and any other method of communication considered private. Answer option B is incorrect. Spoofing is a technique that makes a transmission appear to have come from an authentic source by forging the IP address, email address, caller ID, etc. In IP spoofing, a hacker modifies packet headers by using someone else's IP address to hide his identity. However, spoofing cannot be used while surfing the Internet, chatting on-line, etc. because forging the source IP address causes the responses to be misdirected. Answer option A is incorrect. Shielding cannot be done over e-mail and instant messaging. Shielding is a way of preventing electronic emissions that are generated from a computer or network from being used by unauthorized users for gathering confidential information. It minimizes the chances of eavesdropping within a network. Shielding can be provided by surrounding a computer room with a Farady cage. A Farady cage is a device that prevents electromagnetic signal emissions from going outside the computer room. Shielding can also protect wireless networks from denial of service (DoS) attacks. Answer option D is incorrect. Packaging is a process in which goods are differentiated on the basis of the container in which they are stored, such as bottles, boxes, bags, etc.

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