SY0-101 Security+ Mock Test Exam

CompTIA ™

SY0-101 Security+

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Demo Question 21.

Choose the option that correctly details the greatest vulnerability of using Instant Messaging clients.

A. Results in theft of root user credentials.
B. Results in disconnection from the file server.
C. Results in malicious code being delivered by file transfer.
D. Results in slow Internet connections.
E. Results in loss of email privileges.
F. Results in Blue Screen of Death errors.

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Answer: C

Explanation: Instant Messaging (IM) enables users to communicate in real-time using text messages and to exchange files (pictures, music, and so on) with one another. Thus IM clients can also be compromised by malicious code, Trojan Horse programs, and traditional DoS attacks. IM clients are often prone to hostile code (usually in the form of file transfers) and subject to social engineering attacks, wherein a hacker plays upon the culpability of a user to get what they need. Incorrect answers: A. This is a result of spoofing. B. This could result from a buffer overflow attack. D. Slow internet connection could be ping of death attack results. E. Loss of e-mail privileges is dependent on company policy. F. Blue screen of Death errors is the result of a Winnuke attack. References: Mike Pastore and Emmett Dulaney, Security+ Study Guide, 2nd Edition, Alameda, Sybex, 2004, p 21