9781423902454_Sol_Ch14 - Network+ Guide to Networks, 5th...

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Network+ Guide to Networks, 5 th Edition Solutions 14– 1 Network+ Guide to Networks, 5 th Edition Chapter 14 Solutions Review Questions 1. Which of the following percentages represents the highest availability? a. 99.99% 2. What distinguishes a Trojan horse from a boot sector virus? a. A Trojan horse propagates itself via network connections while a boot sector virus propagates itself through executable files copied from disk to disk. 3. What characteristic of the IRC protocol makes it an effective way to spread viruses and worms quickly? b. It broadcasts communication from one chat room participant to others. 4. Which of the following techniques does a polymorphic virus employ to make itself more difficult to detect? a. It frequently changes its code characteristics. 5. If your anti-malware software uses signature scanning, what must you do to keep its malware-fighting capabilities current? d. Regularly update the anti-malware software's signature database. 6. Which of the following power flaws has the ability to render your server’s main circuit board unusable, even after power returns to normal? d. Surge 7. Approximately how long will an online UPS take to switch its attached devices to battery power? d. No time 8. When purchasing a UPS, you have to match the power needs of your system according to what unit of measure? c. Volt-amps 9. What makes SONET a highly fault-tolerant technology? a. It uses dual, fiber-optic rings to connect nodes. 10. Why is simple disk striping not fault-tolerant? b. If one disk fails, data contained on that disk is unavailable. 11. The most common form of RAID used on modern networks relies on what techniques?
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Network+ Guide to Networks, 5 th Edition Solutions 14– 2 c. disk striping with distributed parity 12. Which of the following can be considered an advantage of clustering servers over mirroring servers? d.
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9781423902454_Sol_Ch14 - Network+ Guide to Networks, 5th...

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