Comptia Linux +, Ch. 14
monitoring
On which part of the maintenance cycle do Linux administrators spend the most time?
False
RSA is a common symmetric encryption algorithm used by SSH and GPG. True or False?
Lock the server in a server closet, Ensure that SELinux or AppArmor is used to protect key services
What are best practices for securing a local Linux server? (Choose all that apply.)
INPUT
What type of iptables chain targets traffic that is destined for the local computer?
Take 50 swap statistics every 3 seconds
What will the command sar -W 3 50 do?
tripwire, AIDE
Which of the following Linux Intrusion Detection Systems can be used to detect altered files and directories? (Choose all that apply.)
On-screen keyboard, High contrast, Sticky keys, Mouse keys
Which of the following are common assistive technologies? (Choose all that apply.)
sar, free, vmstat
Which of the following commands can be used to display memory statistics? (Choose all that apply.)
sa19
Which of the following files is likely to be found in the /var/log/sa directory on a Fedora 20 system over time?
Ensure that only necessary services are running
Which of the following actions should you first take to secure your Linux computer against network attacks?
nmap
Which of the following commands can be used to scan the available ports on computers within your organization?
Delegate responsibility
Which of the following steps is not a common troubleshooting procedure?
False
The lspci command can be used to isolate problems with X Windows. True or False?
ulimit
Which command can increase the number of filehandles that programs can open in a shell?
firewall-cmd --add-service ssh --permanent
Which of the following firewalld commands can be used to allow incoming SSH connections the next time the system is booted?
True
The private key is used when creating a digital signature. True or False?
ldd
Which command indicates the shared libraries required by a certain executable program?
/etc/sudoers
Which file contains information regarding the users, computers, and commands used by the sudo command?
bad, because the processor is idle 10% of the time and perhaps a faster CPU is required
When performing a sar -u command, you notice that %idle is consistently 10%. Is this good or bad?
False
When the fsck command cannot repair a nonroot filesystem, you should immediately restore all data from tape backup. True or False?
