FC0-U71 Applications and Software Practice Question
A user wants to install a program on their Ubuntu Linux system. Which TWO file extensions are commonly used for Linux installer packages? (Select TWO.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
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.deb
Option A (.deb) is correct because Debian-based distributions such as Ubuntu use .deb packages, which are installed with dpkg or apt (e.g., apt install ./package.deb). Option D (.rpm) is correct because .rpm is the standard package format used by RPM-based Linux distributions like Red Hat Enterprise Linux, Fedora, and openSUSE, and it is commonly recognized as a Linux installer package format. Option B (.dmg) is incorrect because it is a macOS disk image format, not a Linux package. Option C (.exe) is incorrect because it is a Windows executable format. Option E (.msi) is incorrect because it is a Windows Installer package format.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
.deb
Why this is correct
The .deb format is the native package format for Debian-based distributions, including Ubuntu. It satisfies the stem's Ubuntu constraint directly, since Ubuntu derives from Debian and its package manager, dpkg, installs .deb files. Other Linux families use different formats, such as .rpm on Red Hat-based systems.
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.dmg
Why it's wrong here
The .dmg extension is an Apple disk image used to distribute macOS applications, which Ubuntu cannot install. It is tempting because it is a familiar packaged-installer format, and would be correct when deploying software to a Mac rather than a Linux system.
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.exe
Why it's wrong here
The .exe extension is a Windows executable format, so Ubuntu's package managers cannot process it. It is tempting because it is the most recognisable installer extension, and would be correct when installing software on a Windows machine instead of a Linux distribution.
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.rpm
Why this is correct
The .rpm extension is the package format used by RPM-based distributions such as Red Hat and Fedora, satisfying the question's request for a common Linux installer package alongside .deb. Ubuntu itself uses .deb, but .rpm remains a widely recognised Linux package extension.
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.msi
Why it's wrong here
The .msi extension is a Windows Installer package, unusable by Ubuntu's dpkg or apt tooling. It is tempting because it is a standard packaged installer format, and would be correct when deploying applications across Windows endpoints rather than Linux systems.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This FC0-U71 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the FC0-U71 exam.