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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Users and Groups | 10% | - LDAP user authentication configuration - Create and manage user and group accounts - Environment profiles and shell configuration - User resource limits - Access Control Lists (ACLs) |
| Topic 2: Networking | 25% | - Firewall rules, packet filtering and NAT - Time synchronization with NTP - OpenSSH server and client setup - Hostname resolution and DNS configuration - IPv4 and IPv6 configuration - Static routing and network bonding/bridging |
| Topic 3: Operations and Deployment | 25% | - Container operations basics - Process management and scheduling - Kernel modules and runtime configuration - Service management with systemd - Software installation and package management - Boot process and system startup |
| Topic 4: Storage Management | 20% | - Storage monitoring and troubleshooting - LVM configuration and administration - Filesystem creation, mounting and maintenance - Remote storage and network filesystems - Auto-mount filesystems - Swap space configuration |
| Topic 5: Essential Commands | 20% | - Text processing and regular expressions - Bash shell navigation and scripting basics - File and directory management - System monitoring and performance analysis - File permissions and ownership - Basic Git operations |
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NEW QUESTION # 183
When trying to unmount a device it is reported as being busy. Which of the following commands could be used to determine which process is causing this?
Answer: A
NEW QUESTION # 184
What can the Logical Volume Manager (LVM) be used for? (Choose THREE correct answers.)
Answer: A,C,E
NEW QUESTION # 185
Which of the following command sets the Bash variable named TEST with the content FOO?
Answer: A
NEW QUESTION # 186
Context
You are asked to install a GNU software package from source code.
Task
First, configure the software package at ~/bool with all default settings.
The software package has been unpacked and all tools required for a configuration have been pre-installed for your convenience.
Next, build the software package at ~/bool.
All tools and dependent libraries required for compilation have been pre-installed for your convenience.
Finally, install the built software package.
Answer:
Explanation:
See the complete solution in Explanation.
Explanation:
Objective: Configure, compile, and install the GNU software package already extracted into ~/bool, using its default build and installation settings.
The standard GNU build procedure consists of three main commands, executed in this exact order:
/configure
make
sudo make install
The official GNU Autoconf and Automake documentation confirms this sequence for packages using the GNU build system.
Step 1: Connect to the correct Linux server.
The task is associated with host lfcs00102.
From the candidate terminal, execute:
ssh lfcs00102
This establishes an SSH session with the server where the source-code package must be configured, compiled, and installed.
All subsequent commands must be executed on this host.
Step 2: Navigate to the software source directory.
Execute:
cd ~/bool
* cd changes the working directory.
* ~ represents the current user's home directory.
* bool is the directory containing the extracted software source code.
Verify the current directory:
pwd
Expected structure:
/home/candidate/bool
The actual home directory depends on the account used on the host.
Step 3: Inspect the extracted source files.
Execute:
ls -la
A GNU Autotools-based source package commonly contains files such as:
configure
Makefile.am
Makefile.in
configure.ac
README
INSTALL
src/
These are examples of commonly encountered files; the actual directory contents may differ.
The critical file for the first stage is:
configure
The task explicitly states that the package has already been unpacked and the required development tools are installed.
Therefore, there is no need to download another source archive, extract additional files, or install development packages.
Step 4: Verify that the configuration script exists.
Execute:
ls -l ./configure
Then check whether it is executable:
test -x ./configure
echo $?
Expected exit code:
0
If the file is readable but lacks execution permission, you can inspect its permissions:
stat -c '%A %a %n' ./configure
Before changing permissions, confirm that the file is the actual generated configuration script.
If necessary, a readable configure shell script can also be executed with:
sh ./configure
However, the normal and preferred invocation for this task is ./configure.
Step 5: Configure the software package using all default settings.
Execute:
/configure
This is the first essential command.
The configure script examines the system and prepares the source tree for compilation.
Typical checks include:
* Operating system and processor architecture.
* Available C compiler.
* Compiler capabilities and flags.
* Required libraries and header files.
* Build utilities and dependencies.
* Installation directory configuration.
* Generation of Makefiles.
An illustrative output might include:
checking for gcc... gcc
checking whether the C compiler works... yes
checking for stdio.h... yes
checking for stdlib.h... yes
checking for make... make
configure: creating ./config.status
config.status: creating Makefile
The output will differ according to the source package.
Important: The task requires all default settings. Therefore, do not specify configuration arguments such as:
/configure --prefix=/opt/bool
or:
/configure --disable-shared
unless explicitly requested.
Using plain ./configure ensures that the package's own default configuration options are selected.
GNU Autoconf documents that the default installation prefix is commonly /usr/local, although packages can choose another default.
Step 6: Verify that configuration completed successfully.
Immediately after ./configure finishes, execute:
echo $?
Expected:
0
Exit status 0 indicates that the configuration script completed successfully.
Next, verify the generated Makefile:
ls -l Makefile
You can also check for the configuration status file:
ls -l config.status
For a standard Autoconf package, these files indicate that configuration generated the instructions required for compilation.
If configuration reports a missing dependency or another error, investigate that specific error before proceeding to the build stage.
Do not assume that configuration succeeded merely because some files were generated.
Step 7: Inspect the generated Makefile.
Execute:
ls -lh Makefile
The Makefile contains the instructions that GNU Make uses to build and install the software.
You can inspect the default installation prefix:
grep -E '
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