Linux OS Security End of Course Prep Questions And Answers
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Course
Linux OS Security
Institution
Linux OS Security
When viewing the permissions for the /tmp/ directory, what should you expect to see?
A.rw-rwx--x
B.rwxrwxrwx
C.rwxrwxrwt
D.---------
E.r-xrwxrwt - Answer- C.rwxrwxrwt
Which of the following will create an archived file named from the contents of your documents directory?
A.tar -c ~/Docu...
linux os security end of course prep questions and
when viewing the permissions for the tmp directo
which of the following will create an archived fil
what key is used to exit the less command
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Linux OS Security End of Course Prep Questions And
Answers
What program could you use to conduct a technical vulnerability scan of a Linux host? -
Answer- A. Nessus
When connecting to an untrusted wireless access points how can you increase your
security and safety of using that access point? - Answer- A. Use a VPN to encrypt your
traffic
What service would you use to schedule a script to run at a certain pre-determined
time? - Answer- A. cron
What does the command find / -xdev -nouser do? - Answer- A. Finds files that belong to
user accounts that are no longer on the system
Which documents or resources can you review for guidance on hardening a Linux
system: - Answer- ALL OF THESE
A. NSA hardening guide
B. DISA STIG
C. National Vulnerability Database
D. All of these
In a hardened Linux environment the firewalls default policy should be - Answer- B.
Deny All (or Drop)
What base directory would you put a script in if you wanted it to automatically start when
the operating system starts? - Answer-
If you use GRUB to manage different boot options on your Linux host and want to
increase security especially for physical access you should - Answer- A. Configure
GRUB to prompt for a password to boot a partition
127.0.0.1 is an example of what type of address? - Answer- A. IPv4
What program allows you to interactively execute programs or commands as the root
user? - Answer- A. sudo
An attacker who places an entry such as 74.213.42.219 www.cmu.edu in the /etc/hosts
file could redirect users to a malicious server. - Answer- A. True
, What is Unified Extensible Firmware Interface designed to do? - Answer- A. Prevent
malicious actors from modifying the boot loader or booting the computer with a different
operating system
Single user mode in Linux is a security risk if a malicious actor has physical access to
the host. - Answer- A. True
Bro, Snort, Suricata are examples of what kind of Linux security feature? - Answer- A.
Network Intrusion Detection Systems
Misconfigurations are a more likely security threat than viruses on Linux. - Answer- A.
True
What type of attack is enabled by lack of input validation in applications? - Answer- A.
SQL injection
What program should be used to change a user password? - Answer- A. passwd
Package repositories are collections of software and source files used by package
management systems to install, update, and remove software on a Linux system. -
Answer- A. True
In addition to the internal authentication via /etc/passwd and /etc/shadow files, what
services can be used to authenticate users to a Linux host? - Answer-
GID UID and EUID stand for: - Answer-
You can use SSH to tunnel and encrypt traffic between a client and a server. - Answer-
A. True
2003:da3:1637:ffff:ffff:ffff:ffff:ffff is an example of what type of address? - Answer- B.
IPv6
What Linux security feature can be used to log, drop, reject, or alter packets? - Answer-
A. IPTables
Scripting is a good way to automate manual or time intensive tasks such as backups or
running programs on a scheduled basis or monitoring and checking system settings. -
Answer- A. True
What tool could you use to monitor current file system activity? - Answer- A. LSOF
What programs could you use to remotely interact with a Linux system? - Answer- ALL
OF THESE
A. NX
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