LPIC-1 Practice Test 6 — 10 Questions

Question 1

A system administrator needs to install a local Debian package file named 'myapp.deb'. Which command should be used?

Accepted Answer

dpkg -i myapp.deb. The correct command to install a local Debian package file is `dpkg -i myapp.deb`. The `dpkg` tool is the low-level package manager for Debian-based systems that directly handles `.deb` files, and the `-i` flag triggers installation. Unlike `apt-get` or `aptitude`, `dpkg` does not resolve dependencies automatically, but it is the proper tool for installing a standalone `.deb` file from disk.

Answer

rpm -ivh myapp.deb

Answer

aptitude install myapp.deb

Answer

apt-get install myapp.deb

Question 2

A system administrator needs to find out which package installed the file /usr/bin/foo on a Red Hat system. Which command should be used?

Accepted Answer

`rpm -qf /usr/bin/foo`. The `rpm -qf /usr/bin/foo` command queries the RPM database to determine which installed package owns the specified file. The `-f` (or `--file`) option tells RPM to search for the package that provided that file path, making it the correct choice for this task on a Red Hat system.

Answer

`rpm -qa /usr/bin/foo`

Answer

`rpm -qi /usr/bin/foo`

Answer

`rpm -ql /usr/bin/foo`

Question 3

An administrator wants systemd-journald logs to persist across reboots. What must be created?

Accepted Answer

The directory /var/log/journal. By default, systemd-journald stores logs in a volatile tmpfs at /run/log/journal, which is cleared on reboot. To make logs persistent, the directory /var/log/journal must be created. When systemd-journald detects this directory exists, it automatically switches to persistent storage, writing logs to /var/log/journal and preserving them across reboots.

Answer

The directory /run/log/journal

Answer

The file /etc/journald.conf

Answer

The directory /var/spool/journal

Question 4

On a modern Linux system using systemd-networkd for interface management and systemd-resolved for DNS, which THREE files are typically involved in network configuration and DNS resolution?

Accepted Answer

/etc/systemd/network/10-static.network. On a modern Linux system using systemd-networkd, network interface configuration is defined in .network files within /etc/systemd/network/, such as 10-static.network (Option A). systemd-resolved manages DNS resolution and typically writes to /etc/resolv.conf (Option C) as a symlink to its own stub resolver. /etc/hosts (Option D) is a static host-to-IP mapping file that is consulted by the system's resolver before DNS queries, making it a standard part of DNS resolution. Together, these three files are directly involved in network configuration and DNS resolution under systemd.

Answer

/etc/network/interfaces

Answer

/etc/sysconfig/network-scripts/ifcfg-eth0

Question 5

An Ubuntu 20.04 server needs a static IP address. The administrator has created a netplan YAML file at /etc/netplan/01-netcfg.yaml. What is the next step to apply the configuration?

Accepted Answer

netplan apply. On Ubuntu 20.04, netplan is the default network configuration tool, and the correct command to apply changes from a YAML file in /etc/netplan/ is 'netplan apply'. This command parses the YAML, generates the appropriate backend configuration (systemd-networkd or NetworkManager), and applies it without requiring a reboot. It is the standard, supported method for activating static IP settings on modern Ubuntu systems.

Answer

ifconfig eth0 down; ifconfig eth0 up

Answer

service network-manager restart

Answer

systemctl restart networking

Question 6

Refer to the exhibit. After modifying /etc/default/grub to enable serial console output, which command must be run to apply the changes to the GRUB configuration?

Accepted Answer

update-grub. The correct command is `update-grub` (or its equivalent `grub-mkconfig -o /boot/grub/grub.cfg`). After modifying `/etc/default/grub`, you must regenerate the GRUB configuration file (`grub.cfg`) to incorporate the new serial console settings. `update-grub` is a wrapper that runs `grub-mkconfig` and writes the output to the correct location, applying the changes.

Answer

grub-editenv

Answer

grub-install

Answer

grub-set-default

Question 7

A technician needs to add the official Debian repository for the 'buster' release. Which line should be added to /etc/apt/sources.list?

Accepted Answer

`deb http://deb.debian.org/debian buster main`. It uses the standard 'deb' prefix for binary packages, points to the official Debian repository at http://deb.debian.org/debian, specifies the release codename 'buster', and includes the required component 'main'. This is the exact format required by APT to fetch packages for the Debian buster release.

Answer

`deb http://deb.debian.org/debian buster-updates main`

Answer

`deb-src http://deb.debian.org/debian buster main`

Answer

`rpm http://deb.debian.org/debian buster main`

Question 8

A company is deploying a new web application and needs to ensure high availability. They have two web servers and want to use DNS round-robin. Which DNS record type is most appropriate?

Accepted Answer

A. DNS round-robin distributes traffic across multiple servers by returning multiple A records for a single hostname in a rotating order. An A record maps a hostname to an IPv4 address, so using multiple A records for the same name is the standard method for DNS-based load balancing. This allows each web server to be reached via its own IP address, enabling high availability without additional hardware or software.

Answer

MX

Answer

PTR

Answer

CNAME

Question 9

An administrator plans to back up the /home filesystem using dump. Which option to dump is required to perform a full backup?

Accepted Answer

-0. The dump utility uses dump levels (0-9) to control backup depth. A level 0 dump performs a full backup of the specified filesystem, copying all files regardless of modification time. This is the required option for a complete backup of /home.

Answer

-f /dev/st0

Answer

-u

Answer

-1

Question 10

A company runs a legacy application on a Linux server. The application fails to start after a reboot, claiming a 'cannot open shared object file' error. The system administrator checks the library path and finds that the required library is present in /usr/local/lib but the application cannot find it. The administrator has verified that the library file exists and is readable. Which of the following is the most likely cause and solution?

Accepted Answer

The library path is not in /etc/ld.so.conf; run ldconfig after adding it.. The dynamic linker/loader (ld.so) uses the cache file /etc/ld.so.cache to resolve shared library dependencies at runtime. Although the library exists in /usr/local/lib, that path is not listed in /etc/ld.so.conf (or a file included by it), so the linker never scans it. Running ldconfig rebuilds the cache and makes the library discoverable, which resolves the 'cannot open shared object file' error.

Answer

The library has insufficient execute permissions; add execute bit.

Answer

The application is setuid root and the library path is ignored; use $LD_LIBRARY_PATH.

Answer

The library is compiled for a different architecture; recompile the library.