RHCE Red Hat Certified Engineer Linux Study Guide (Exam RH302), Fourth Edition [Electronic resources]

1.

þ D. The CTRL-ALT-F4 key combination accesses the screen with kernel messages during the Red Hat Linux installation process.

ý A, B, and C are all incorrect, as they access the default text installation display, the bash shell, and the installation message log, respectively.

2.

þ B. The /var/log/dmesg file contains boot messages.

ý A, C, and D are all incorrect. The /var/log/messages file is significant as the location for service startup and shutdown messages.

3.

þ B. The a command in GRUB accesses the information passed to the kernel. The single command makes the kernel access single-user mode.

ý A, C, and D are not correct. There is no boot prompt in GRUB. The linux sum command has no meaning at the LILO boot: prompt. While answer D could work, it is at best inefficient.

4.

þ A. In both LILO and GRUB, the root=/dev/sda7 command indicates that the root directory, /, is located on the third logical partition of the first SCSI hard disk.

ý B, C, and D are not correct. In either boot loader, root represents the top-level / directory, not the home directory of the root user (/root). It is not an error in either boot loader.

5.

þ A. 4 total, 3 that are called primary and 1 that is a primary partition that is configured as an extended partition. Extended partitions can contain up to 12 logical partitions. 12 + 4 = 16.

ý B, C, and D are all incorrect configurations. The limitation described in the question applies to the Microsoft version of the FDISK.EXE utility.

6.

þ B. The p command 'prints' the current partition table to the screen.

ý A, C, and D are all incorrect. The m command lists other available commands within fdisk. The x command exits from fdisk. The w command writes your changes to the partition table.

7.

þ A. The first spare-disks variable is number 0. Since we have one spare disk, the raidtab entry is set up correctly.

ý B, C, and D are incorrect. There is no way to know from this file the status of the RAID disks, nor the current loading, as this is a configuration file, not a log of the running service.

8.

þ A and B. RAID 0 does not include any parity data or any other way to recover data from a failed disk. RAID 1 includes an identical copy of data on two different disks. No parity data is required in this version of RAID.

ý C and D are incorrect. Both RAID 4 and RAID 5 use parity bits. If one drive on either of these systems is lost, the data from that drive can be rebuilt from the parity bits.

9.

þ D. An LVM Physical Volume is the physical partition or hard disk where you've applied the pvcreate command to set up Physical Extents.

ý A, B, and C are incorrect. A Logical Extent is a chunk of disk space that maps to a Physical Extent. A Logical Volume is a group of Logical Extents. A Volume Group is composed of a group of Logical Volumes.

10.

þ D. The --grow switch alone is enough to accommodate a growable partition. If there is no --maxsize switch, that implies that you do not want to limit the size of this partition.

ý A, B, and C are incorrect. Neither the --grow nor the --maxsize switch is associated with a yes or a no, so A is incorrect. A --maxsize switch alone without --grow is not meaningful, so B is incorrect. Answer C includes a limit on the size of the /var partition.