CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers

CyberOps Associate v1.0 – Modules 3 – 4: Operating System Overview Group Exam Answers

1. 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.

More network applications are created for this environment.

It is more secure than other server operating systems.

The administrator has more control over the operating system.

Explanation: There are several reasons why Linux is a good choice for the SOC.
Linux is open source.
The command line interface is a very powerful environment.
The user has more control over the operating system.
Linux allows for better network communication control.

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

Allow default services to remain enabled.

Allow USB auto-detection.

Enforce the password history mechanism.

Update patches on a strict annual basis irrespective of release date.

Ensure physical security.

Explanation: 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.

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

sudo

ps

pwd

chmod

4. 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?

write only

read, write

read only

read, write, execute

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

system viewer

file viewer

package management tool

terminal emulator

Explanation: A terminal emulator is an application program a user of Linux can use in order to access the CLI environment.

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

25

53

110

60

Explanation: Port numbers are used in TCP and UDP communications to differentiate between the various services running on a device. The well-known port number used by DNS is port 53.

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

any user that has ‘group’ permission to the file

only the creator of the file

any user that has ‘other’ permission to the file

root user

8. Match the commonly used ports on a Linux server with the corresponding service.

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p8

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p8

 

SMTP: 25

DNS: 53

HTTPS: 443

SSH: 22

TELNET: 23

9. Match typical Linux log files to the function.

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p9

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p9

used by RedHat and CentOS computers and tracks authentication-related events: /var/log/secure

contains generic computer activity logs, and is used to store informational and noncritical system messages: /var/log/messages

stores information related to hardware devices and their drivers: /var/log/dmesg

used by Debian and Ubuntu computers and stores all authentication-related events: /var/log/auth.log

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

log manager

malware analysis tool

ticketing system

packet capture software

11. Why is Kali Linux a popular choice in testing the network security of an organization?

It is a network scanning tool that prioritizes security risks.

It is an open source Linux security distribution containing many penetration tools.

It can be used to test weaknesses by using only malicious software.

It can be used to intercept and log network traffic.

12. Match the octal value to the file permission description in Linux. (Not all options are used.)

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p12

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p12

 

write only ~~> 010

read and execute ~~> 101

read and write ~~> 110

execute only ~~> 001

write and execute ~~> NOT SCORED

no access ~~> 000

13. Match the Linux command to the function. (Not all options are used.)

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p13

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p13

 

Displays the name of the current working directory: pwd

runs a command as another user: sudo

modifies file permissions: chmod

shuts down the system: Empty

lists the processes that are currently running: ps

14. What are two advantages of the NTFS file system compared with FAT32? (Choose two.)

NTFS is easier to configure.

NTFS supports larger files.

NTFS allows faster formatting of drives.

NTFS allows the automatic detection of bad sectors.

NTFS allows faster access to external peripherals such as a USB drive.

NTFS provides more security features.

Explanation: The file system has no control over the speed of access or formatting of drives, and the ease of configuration is not file system-dependent.

15. A PC user issues the netstat command without any options. What is displayed as the result of this command?

a historical list of successful pings that have been sent

a list of all established active TCP connections

a network connection and usage report

a local routing table

Explanation: When used by itself (without any options), the netstat command will display all the active TCP connections that are available.

16. Which two commands could be used to check if DNS name resolution is working properly on a Windows PC? (Choose two.)

nslookup cisco.com

net cisco.com

ipconfig /flushdns

nbtstat cisco.com

ping cisco.com

Explanation: The ping command tests the connection between two hosts. When ping uses a host domain name to test the connection, the resolver on the PC will first perform the name resolution to query the DNS server for the IP address of the host. If the ping command is unable to resolve the domain name to an IP address, an error will result.

Nslookup is a tool for testing and troubleshooting DNS servers.

17. What is the purpose of using the net accounts command in Windows?

to display information about shared network resources

to show a list of computers and network devices on the network

to start a network service

to review the settings of password and logon requirements for users

Explanation: These are some common net commands:
net accounts – sets password and logon requirements for users
net start – starts a network service or lists running network services
net use – connects, disconnects, and displays information about shared network resources
net view – shows a list of computers and network devices on the network
When used without options, the net accounts command displays the current settings for password, logon limitations, and domain information.

18. Match the Windows 10 boot sequence after the boot manager (bootmgr.exe) loads.

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p18

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p18

Step one: The Windows boot loader Winload.exe loads

Step two: Ntosknl.exe and hal.dll are loaded

Step three: Winload.exe reads the registry, chooses a hardware profile, and loads the device drivers.

Step four: Ntoskrnl.exe takes over the process.

Step five: Winlogon.exe is loaded and excutes the logon process.

19. A technician has installed a third party utility that is used to manage a Windows 7 computer. However, the utility does not automatically start whenever the computer is started. What can the technician do to resolve this problem?

Set the application registry key value to one.

Use the Add or Remove Programs utility to set program access and defaults.

Change the startup type for the utility to Automatic in Services .

Uninstall the program and then choose Add New Programs in the Add or Remove Programs utility to install the application.

Explanation: The Services console in Windows OS allows for the management of all the services on the local and remote computers. The setting of Automatic in the Services console enables the chosen service to start when the computer is started.

20. Which statement describes the function of the Server Message Block (SMB) protocol?

It is used to stream media contents.

It is used to manage remote PCs.

It is used to compress files stored on a disk.

It is used to share network resources.

21. A user creates a file with .ps1 extension in Windows. What type of file is it?

PowerShell function

PowerShell cmdlet

PowerShell documentation

PowerShell script

Explanation: The types of commands that PowerShell can execute include the following:

cmdlets – perform an action and return an output or object to the next command that will be executed

PowerShell scripts – files with a .ps1 extension that contain PowerShell commands that are executed

PowerShell functions – pieces of code that can be referenced in a script

22. Match the Windows command to the description.

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p22

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p22

renames a file ~~> ren

creates a new directory ~~> mkdir

changes the current directory ~~> cd

lists files in a directory ~~> dir

23. A user logs in to Windows with a regular user account and attempts to use an application that requires administrative privileges. What can the user do to successfully use the application?

Right-click the application and choose Run as Priviledge .

Right-click the application and choose Run as Superuser .

Right-click the application and choose Run as Administrator .

Right-click the application and choose Run as root .

24. An IT technician wants to create a rule on two Windows 10 computers to prevent an installed application from accessing the public Internet. Which tool would the technician use to accomplish this task?

Local Security Policy

Computer Management

Windows Defender Firewall with Advanced Security

DMZ

Explanation: Windows Firewall with Advanced Security or the Windows 10 Windows Defender Firewall with Advanced Security is used to create inbound and outbound rules, connection security rules such as security traffic between two computers, and monitoring any active connection security rules.

25. What technology was created to replace the BIOS program on modern personal computer motherboards?

UEFI

MBR

CMOS

RAM

26. Match the Linux system component with the description. (Not all options are used.)

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p26

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p26

 

CLI : a text based interface that accepts user commands

shell : a program that interprets and executes user commands

daemon : a background process that runs without the need for user interaction

(Empty) : a program that manages CPU and RAM allocation to processes, system calls, and file systems

27. 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 opens the most recent log file

The man man command provides a list of commands available at the current prompt

The man man command provides documentation about the man command

Explanation: 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.


28. Match the description to the Linux term. (Not all options are used.)

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p28

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p28

a type of file that is a reference to another file or directory ~~> symlink

a running background process that does not need user interaction ~~> daemon

protecting remote access ~~> hardening

(Empty) ~~>logging

29. What are two benefits of using an ext4 partition instead of ext3? (Choose two.)

an increase in the number of supported devices

improved performance

compatibility with NTFS

increase in the size of supported files

decreased load time

compatibility with CDFS

30. 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

read, write, execute

write only

read only

read, write

Explanation: 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 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.

31. What is the purpose of entering the netsh command on a Windows PC?

to configure networking parameters for the PC

to change the computer name for the PC

to create user accounts

to test the hardware devices on the PC

Explanation: The netsh.exe tool can be used to configure networking parameters for the PC from a command prompt.


32. Which type of Windows PowerShell command performs an action and returns an output or object to the next command that will be executed?

cmdlets

functions

routines

scripts

Explanation: The types of commands that PowerShell can execute include the following:

cmdlets – perform an action and return an output or object to the next command that will be executed

PowerShell scripts – files with a .ps1 extension that contain PowerShell commands that are executed

PowerShell functions – pieces of code that can be referenced in a script


33. A user creates a file with .ps1 extension in Windows. What type of file is it?

PowerShell documentation

PowerShell cmdlet

PowerShell script

PowerShell function

Explanation: The types of commands that PowerShell can execute include the following:
cmdlets – perform an action and return an output or object to the next command that will be executed
PowerShell scripts – files with a .ps1 extension that contain PowerShell commands that are executed
PowerShell functions – pieces of code that can be referenced in a script

34. Match the Windows system tool with the description. (Not all options are used.)

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p34

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p34

Registry : a hierarchical database of all system and user information

Windows Firewall : selectively denies traffic on specified interfaces

PowerShell : a CLI environment used to run scripts and automate tasks

Event Viewer : maintains system logs

(Empty) : provides information on system resources and processes

(Empty) : provides virus and spyware protection

35. In the Linux shell, which character is used between two commands to instruct the shell to combine and execute these two commands in sequence?

$

#

%

|

Explanation: In the Linux shell, several commands can be combined to perform a complex task. This technique is known as piping. The piping process is indicated by inserting the character “|” between two consecutive commands.

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

customizable penetration and protection tools

fewer deployments

file system structure, file permissions, and user account restrictions

integrated firewall

37. Match the commonly used ports on a Linux server with the corresponding service. (Not all options are used.)

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p37

CyberOps Associate v1.0 – Modules 3 – 4 Exam Answers p37

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