Free S2000-025 sample questions

Correct answer: Use `yum install ` or `dnf install `.

AIX 7.3 and later versions increasingly rely on YUM (or its successor DNF) to manage open-source RPM packages. These tools are designed to automatically resolve and install dependencies from configured repositories, which is the most efficient and reliable method. Manually installing dependencies is tedious and error-prone. The `installp` command is for AIX-native packages, not RPMs.

Correct answer: chdev -l fcs0 -a max_xfer_size=0x100000 -P

The `chdev` command is used to modify device attributes. By default, it only changes the running configuration. To make the change permanent so that it is applied after a reboot, the `-P` flag must be used. This flag updates the device's attributes in the Object Data Manager (ODM) database.

Correct answers: /etc/inittab; Scripts within `/etc/rc.d/`

The `/etc/inittab` file is the primary control file for the `init` process, defining which processes and scripts to run at different run levels during system startup.

The `/etc/inittab` file often calls scripts located in the `/etc/rc.d/` directory structure (like `/etc/rc.d/rc2.d/`) to start and stop services for a specific run level. A faulty script here is a common cause of boot hangs.

Correct answer: Use `mksysb` for `rootvg` to NIM, `savevg` for `dbvg` to tape, `snap -a` for reporting, and `cron` for scheduling.

This solution correctly maps each requirement to the appropriate AIX tool: `mksysb` is for creating a bootable OS backup (Req 1). `savevg` is designed for backing up non-root volume groups (Req 2). `snap -a` gathers comprehensive system configuration data for reporting (Req 3). `cron` is the standard utility for automating recurring tasks (Req 4).

Correct answer: stopsrc -s -f

The `-f` (force) flag with `stopsrc` sends a SIGKILL (kill -9) signal to the subsystem process but does so under the control of the SRC. This ensures that the SRC updates its status for the subsystem to 'inoperative' and performs necessary cleanup. This is the preferred method over using a manual `kill -9`, which would leave the SRC with an incorrect status for the subsystem.

Correct answer: False

This statement is false. The `at` command is used to schedule a command or script to be executed once at a specific time in the future. For recurring tasks, the `cron` daemon and `crontab` files are used.

Correct answer: Create three copies of the LV, ensuring one copy resides on each of the three physical volumes.

To achieve maximum redundancy, each copy of a logical partition should reside on a different physical volume. By creating three copies of the logical volume (`mklv -c 3 ...`) and ensuring the volume group has a strict inter-disk allocation policy, LVM will place one copy on `hdisk1`, one on `hdisk2`, and one on `hdisk3`. This configuration can survive the failure of any two disks.

Correct answer: 1. extendlv datalv 10G 2. chfs -a size=+10G /data

The correct procedure is to first increase the size of the underlying logical volume (`datalv`) using the `extendlv` command. Once the logical volume has been expanded, the `chfs` command is used to grow the JFS2 file system to utilize the newly available space on the logical volume.

Correct answer: Physical Partition (PP)

A Physical Partition (PP) is the fundamental building block of LVM storage on a physical volume (disk). The size of the PPs is defined when the volume group is created. Logical Volumes are created from a collection of PPs, and there is typically a one-to-one mapping between a Logical Partition (LP) and a Physical Partition (PP).

Correct answer: find / -user root -perm -4000 -ls

The correct command is `find / -user root -perm -4000 -ls`. Let's break it down: `find /` starts the search from the root directory. `-user root` specifies that the file must be owned by root. `-perm -4000` searches for files where the SUID bit (octal value 4000) is set. The hyphen prefix means that *at least* this permission bit must be set. `-ls` provides a detailed listing of the found files.