Topic 1: System Architecture
Which command displays the contents of the Kernel Ring Buffer on the command line? (Provide only the command name without any options or path information)
Answer: dmesg, /bin/dmesg
Which of the following information is stored within the BIOS? (Choose TWO correct answers.)
A.
Boot device order
B.
Linux kernel version
C.
Timezone
D.
Hardware configuration
E.
The system's hostname
Boot device order
Hardware configuration
Which of the following options for the kernel's command line changes the systemd boot target to rescue.target instead of the default target?
A.
systemd.target=rescue.target
B.
systemd.runlevel=rescue.target
C.
systemd.service=rescue.target
D.
systemd.default=rescue.target
E.
systemd.unit=rescue.target
systemd.unit=rescue.target
You suspect that a new ethernet card might be conflicting with another device. Which file
should you check within the /proc tree to learn which IRQs are being used by which kernel
drivers?
Answer: interrupts, /proc/interrupts
Which file in the /proc filesystem lists parameters passed from the bootloader to the kernel? (Specify the file name only without any path.)
Answer: cmdline, /proc/cmdline
During a system boot cycle, what program is executed after the BIOS completes its tasks?
A.
The bootloader
B.
The inetd program
C.
The init program
D.
The kernel
The bootloader
What information can the lspci command display about the system hardware? (Choose THREE correct answers.)
A.
Device IRQ settings
B.
PCI bus speed
C.
System battery type
D.
Device vendor identification
E.
Ethernet MAC address
Device IRQ settings
PCI bus speed
Device vendor identification
During a system boot cycle, what is the program that is run after the BIOS completes its tasks?
A.
The bootloader
B.
The inetd program
C.
The init program
D.
The kernel
The bootloader
The USB device filesystem can be found under /proc/______/usb/. (Please fill in the blank with the single word only)
Answer: bus
The system is having trouble and the engineer wants to bypass the usual /sbin/init start up and run /bin/sh. What is the usual way to pass this change to the kernel from your boot loader?
A.
Start in runlevel 1.
B.
Pass init=/bin/sh on the kernel parameter line.
C.
Pass /bin/sh on the kernel parameter line.
D.
Pass start=/bin/sh on the kernel parameter line
Pass init=/bin/sh on the kernel parameter line.
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