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11.    D. The problems are due to the power outage. An Uninterruptible Power Supply (UPS) maintains power to a device that is plugged into it during a power outage. Since the outage was short, it is very likely that a UPS could have maintained power to the server during the outage. If not, it could have at least performed an orderly shutdown of the server. Please see Chapter 9 for more information.

12.    D. Because one of the main motivations behind the creation of the IPv6 addressing scheme was the lack of available addresses in IPv4, the length of the address was increased from 32 bits in IPv4 to 128 bits in IPv6. Please see Chapter 3 for more information.

13.    A, C. Although all of the NOSes listed can support different client OSes, NetWare and Windows NT support the widest variety of client OSes. Please see Chapter 5 for more information.

14.    D. A 110 block is also known as a punchdown block because of its method of installation. Thus, the tool used to install one is a punchdown tool with a 110 blade. Please see Chapter 6 for more information.

15.    C. ICA is used with Terminal Server servers to allow remote application execution. The other protocols are used to provide remote access to a host network. Please see Chapter 7 for more information.

16.    D. Gateways operate at all levels of the OSI model and connect dissimilar network technologies. While some of the other devices listed may connect dissimilar network technologies, they all operate at only the lower four layers of the OSI model. Please see Chapter 6 for more information.

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