Practice for the LPI Linux Essentials exam with 13 exam-style practice questions, instant answer reveals, and concise explanations of every correct answer. Topics include: In computer networks, what does DHCP stand for?. Follow @CertPunch and visit certpunch.com for more certification practice exams and study content.
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What you will practice
- In computer networks, what does DHCP stand for?
- What key do you press to quit reading a man page?
- Which command searches manual page names and descriptions for a user-supplied keyword?
- Which of the following is TRUE about open source software?
- Which keyboard shortcut allows pasting a previously copied highlighted text while working in the command line…
- Which command shows all of the directories that the shell searches for programs?
Answers and explanations
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Q1. In computer networks, what does DHCP stand for?
Answer: A. Dynamic Host Configuration Protocol
The acronym DHCP stands for Dynamic Host Configuration Protocol, which dynamically assigns IP addresses to network devices. This automated assignment prevents administrators from having to manually configure network settings on every single machine.
Q2. What key do you press to quit reading a man page?
Answer: A. Q
Pressing the letter q quits the man page viewer because it runs inside the less pager. Remember this exam cue, as other keys like escape will not exit the interface.
Q3. Which command searches manual page names and descriptions for a user-supplied keyword?
Answer: D. apropos
The apropos command searches manual page names and descriptions for a keyword. This is highly useful when you know the function you need but cannot recall the exact command name.
Q4. Which of the following is TRUE about open source software?
Answer: B. Open source software is a prominent example of open collaboration
Open source software is developed in a collaborative public manner, serving as a prominent example of open collaboration. While often free of charge, the software is not always free, as vendors can still charge for support services or enterprise features.
Q5. Which keyboard shortcut allows pasting a previously copied highlighted text while working in the command line terminal?
Answer: A. CTRL + SHIFT + V
Pressing Control Shift V pastes copied text into most graphical terminal emulators. Be careful with Control V, because the shell intercepts it as a literal control character insertion rather than handling the standard paste operation.
Q6. Which command shows all of the directories that the shell searches for programs?
Answer: D. echo $PATH
The echo command combined with the PATH variable displays all the directories the shell searches for executable programs. The system checks these directories sequentially when you type a command without providing its full file path.
Q7. Where does Linux store most of its log files in the directory tree?
Answer: C. /var/log
The system stores the vast majority of log files within the slash var slash log directory. This standard location centralizes logs from the kernel and various applications, making administration and troubleshooting much easier.
Q8. Which type of IP addresses uses a dotted-decimal notation?
Answer: A. IPv4
IPv4 addresses use dotted decimal notation, such as one nine two dot one six eight dot one dot one. In contrast, IPv6 utilizes hexadecimal numbers separated by colons to accommodate its much larger address space.
Q9. Which command is used to print the last 10 lines of a file to the display?
Answer: B. tail
The tail command prints the last few lines of a file, showing ten by default. The head command shows the beginning, while cat and less display the entire file.
Q10. Which command is used to print one page of text to the screen at a time?
Answer: D. less
The less command acts as a pager, displaying output one screen at a time. Unlike cat, it allows scrolling backward and forward through large text files interactively.
Q11. Which of the following characters in a shell prompt indicates the shell is running with root privileges?
Answer: C. #
The hash sign indicates the shell is operating with root privileges. The dollar sign denotes a standard unprivileged user, which is the primary visual cue tested.
Q12. Which of the following is a Debian-based computer operating system for Raspberry Pi?
Answer: A. Raspbian
Raspbian is the Debian-based operating system highly optimized for the Raspberry Pi hardware. While Ubuntu is also Debian-based, it is a general-purpose distribution and not tailored specifically for Raspberry Pi.
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