CCNA Cyber Ops (Version 1.1) – Chapter 3 Exam Answers Full

CCNA Cyber Ops (Version 1.1) – Chapter 3 Exam Answers Full
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1. What is the outcome when a Linux administrator enters the man man command?

  • The man man command configures the network interface with a manual address.
  • The man man command provides documentation about the man command. *
  • The man man command provides a list of commands available at the current prompt.
  • The man man command opens the most recent log file.

B. The man command is short for manual and is used to obtain documentation about a Linux command. The command man man would provide documentation about how to use the manual.

2. What is a benefit of Linux being an open source operating system?

  • Linux distributions are maintained by a single organization.
  • Linux distributions must include free support without cost.
  • Linux distribution source code can be modified and then recompiled. *
  • Linux distributions are simpler operating systems since they are not designed to be connected to a network.

C. Linux is an open source operating system and any person can access the source code, inspect it, modify it, and recompile it. Linux distributions are maintained by a community of programmers, are designed to be connected to a network, and do not have to provide free support.

3. Which types of files are used to manage services in a Linux system?

  • Device files
  • System files
  • Directory files
  • Configuration files *

D. In Linux, services are managed using configuration files. When the service starts, it looks for its configuration files, loads them into memory, and adjusts itself according to the settings in the files.

4. Which working environment is more user-friendly?

  • A CLI *
  • A GUI
  • The command prompt
  • A hybrid GUI and CLI interface

B. A graphical user interface (GUI) is considered to be more user-friendly because it presents the operating system with an interface and icons that make it easy to locate applications and complete tasks.

5. Which Linux component would be used to access a short list of tasks theapplication can perform?

  • Launcher
  • Quicklist *
  • Dash Search Box
  • System and Notification Menu

B. The Quicklist is accessed by right-clicking any application hosted on the Launcher. Quicklist allows access to a few tasks for the specific application.

6. Which term is used to describe a running instance of a computer program?

  • Fork
  • Patch
  • Process *
  • Package manager

C. A process is a running instance of a computer program. Multitasking operating systems can execute multiple processes at the same time. A processID (PID) is used to identify a process. The ps or top command can be used to see what processes are currently running on a computer.

7. Which type of tool is used by a Linux administrator to attack a computer or network to find vulnerabilities?

  • Firewall
  • PenTesting *
  • Malware analysis
  • Intrusion detection system

B. PenTesting is known as penetration testing and includes tools that are used to search for vulnerabilities in a network or computer by attacking it.

8. Which method can be used to harden a computing device?

  • Allow USB auto-detection.
  • Force periodic password changes. *
  • Allow default services to remain enabled.
  • Update patches on a strict annual basis irrespective of release date.

B. The basic best practices for device hardening are as follows:
Ensure physical security.
Minimize installed packages.
Disable unused services.
Use SSH and disable the root account login over SSH.
Keep the system updated.
Disable USB auto-detection.
Enforce strong passwords.
Force periodic password changes.
Keep users from reusing old passwords.
Review logs regularly.

9. Consider the result of the ls -l command in the Linux output below. What are the group file permissions assigned to the analyst.txt file?
Click here to view code image
ls -l analyst.txt
-rwxrw-r– sales staff 1028 May 28 15:50 analyst.txt

  • Read only
  • Read, write *
  • Full access
  • Read, write, execute

B. The file permissions are always displayed in the User, Group, and Other order. In the example displayed, the file has the following permissions:
The dash (-) means that this is a file. For directories, the first dash would be replaced with a “d”.
The first set of characters is for user permission (rwx). The user, sales, who owns the file can read, write, and execute the file.
The second set of characters is for group permissions (rw-). The group, staff, who owns the file can read and write to the file.
The third set of characters is for any other user or group permissions (r–).
Any other user or group on the computer can only read the file.

10. Why would a network administrator choose Linux as an operating system in the Security Operations Center (SOC)?

  • It is easier to use than other operating systems.
  • It is more secure than other server operating systems.
  • The administrator has more control over the operating system.
  • More network applications are created for this environment

11. Which Linux command can be used to display the name of the current working directory?

  • chmod
  • pwd
  • ps
  • sudo

12. Consider the result of the ls -l command in the Linux output below. What are the file permissions assigned to the sales user for the analyst.txt file?
ls –l analyst.txt
-rwxrw-r– sales staff 1028 May 28 15:50 analyst.txt

  • write only
  • read, write, execute
  • read, write
  • read only

13. A Linux system boots into the GUI by default, so which application can a network administrator use in order to access the CLI environment?

  • file viewer
  • package management tool
  • terminal emulator
  • system viewer

14. The image displays a laptop that is acting as the SSH client that is communicating with an SSH server. Refer to the exhibit. Which well-known port number is used by the server?

  • 23
  • 22
  • 21
  • 25

15. How is a server different from a workstation computer?

  • The server works as a standalone computer.
  • The server is designed to provide services to clients.
  • The workstation has fewer applications installed.
  • The workstation has more users who attach to it.

16. Which two methods can be used to harden a computing device? (Choose two.)

  • Allow default services to remain enabled.
  • Update patches on a strict annual basis irrespective of release date.
  • Enforce the password history mechanism.
  • Ensure physical security.
  • Allow USB auto-detection.

17. What is the main purpose of the X Window System?

  • to provide a customizable CLI environment
  • to provide a basic framework for a GUI
  • to provide remote access to a Linux-based system
  • to provide a basic set of penetration testing tools

18. Which Linux command is used to manage processes?

  • kill
  • grep
  • chrootkit
  • ls

19. Why is Linux considered to be better protected against malware than other operating systems?

  • fewer deployments
  • integrated firewall
  • customizable penetration and protection tools
  • file system structure, file permissions, and user account restrictions

20. Which two Linux commands might be used before using the kill command? (Choose two.)

  • top
  • ls
  • grep
  • ps
  • chroot

21. What term is used for operating system updates?

  • patches
  • new releases
  • penetration testing
  • packages

22. What term describes a set of software tools designed to increase the privileges of a user or to grant access to the user to portions of the operating system that should not normally be allowed?

  • penetration testing
  • package manager
  • rootkit
  • compiler

23. What is the well-known port address number used by DNS to serve requests?

  • 60
  • 110
  • 25
  • 53

24. Which file system is the primary file system used by Apple in current Macintosh computers?

  • CDFS
  • APFS
  • ext3
  • ext2
  • HFS+

25. Which type of tool allows administrators to observe and understand every detail of a network transaction?

  • malware analysis tool
  • packet capture software
  • ticketing system
  • log manager

26. Which command can be utilized to view log entries of NGINX system events in real time?

  • sudo journalctl –u nginx.service -f
  • sudo journalctl –f
  • sudo journalctl –until “1 hour ago”
  • sudo journalctl –u

27. What is the purpose of a Linux package manager?

  • It provides access to settings and the shutdown function.
  • It is used to compile code that creates an application.
  • It is used to install an application.
  • It provides a short list of tasks a particular application can perform.

28. Which user can override file permissions on a Linux computer?

  • only the creator of the file
  • any user that has ‘group’ permission to the file
  • any user that has ‘other’ permission to the file
  • root user

29. Which Linux file system introduced the journaled file system, which can be used to minimize the risk of file system corruption in the event of a sudden power loss?

  • ext2
  • ext3
  • NFS
  • CDFS

30. What is the method employed by a Linux kernel to create new processes for multitasking of a process?

  • creating interdependent processes
  • dynamic processes
  • pipelining
  • forking

31. What is a purpose of apt-get commands?

  • to configure an appointment for a specific date and time
  • to configure and manage task (to-do) lists
  • to update the operating system
  • to apportion and configure a part of the hard disk for file storage

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