Linux
To build a modularized kernel, the kernel-headers and kernel-source packages must first be installed. Where will you find the kernel-headers and kernel-source?

/usr/local
/usr/bin
None of the listed here
/usr/src/linux

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Linux
LILO

stands for Linux loader
All of the listed here
is a tool used to boot the Kernel on x86 hardware
is the Linux boot loader

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Linux
The physical layer of a network

defines the electrical characteristics of signals passed between the computer and communication devices
None of these
All of these
controls error detection and correction
constructs packets of data and sends them across the network

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