Question 1

Which command can be used to see what network services are running on your network?

Accepted Answer

A)  nmap 
B)  map 
C)  networkmap 
D)  nm

Question 2

What methods can be used to physically secure local computers?

Accepted Answer

The answer of What methods can be used to physically...

Question 3

What option can be specified with the rpm command to identify any missing files in a package or package dependency?

Accepted Answer

A)  -v 
B)  -m 
C)  -V 
D)  -M

Question 4

How can you identify filesystem corruption? How should you troubleshoot filesystem corruption on a non-critical partition?

Accepted Answer

The answer of How can you identify filesystem corruption? How...

Question 5

​What are the two most common technologies that provide asymmetric encryption on Linux systems?

Accepted Answer

A)  ​Apache httpd 
B)  ​Secure Shell (SSH) 
C)  ​Telnet 
D)  ​GNU Privacy Guard (GPG)

Question 6

If applications run into difficulties gaining resources during execution and stop functioning, restarting the process using a specific kill signal may resolve the issue. Select the proper kill signal below:

Accepted Answer

A)  SIGINT 
B)  SIGQUIT 
C)  SIGTERM 
D)  SIGHUP

Question 7

What is the most common hardware component to fail on a Linux system?

Accepted Answer

A)  Floppy drives 
B)  Hard disks 
C)  NICs 
D)  Video cards

Question 8

Running background processes using what command allows you to exit your command-line shell without ending any background processes?

Accepted Answer

A)  continue 
B)  noshell 
C)  nokill 
D)  nohup

Question 9

Older hardware that is malfunctioning may begin to send large amounts of information to the CPU when not in use. What is this process called?​

Accepted Answer

A)  ​flooding 
B)  ​hiccuping 
C)  jabbering​ 
D)  ​dumping

Question 10

What are the two golden rules that should guide you during any troubleshooting process? Describe each rule.

Accepted Answer

The answer of What are the two golden rules that...

Question 11

What command can be used to change the maximum number of file handles that can be used by a program?​

Accepted Answer

A)  ​fhlimit 
B)  ​pgmod 
C)  ​fhch 
D)  ulimit​

Question 12

​If X Windows fails to start, what command can be used to troubleshoot the issue?

Accepted Answer

A)  ​xstatus 
B)  ​xwininfo 
C)  ​xdetail 
D)  ​xreload

Question 13

​Match each term with the correct statement below.
a.​baseline
b.buffer overrun​
c.​file handles
d.​firewall daemon (firewalld)
e.​Intrusion Detection System (IDS)
f.​lsof command
g.​nmap command
h.​SSH agent
i.​tunneling
j.tripwire
-A daemon used on some Linux systems to provide for easier configuration of netfilter via the ipchains command.​

Accepted Answer

The answer of ​Match each term with the correct statement...

Question 14

Which sar command option is used to display statistics for the processor queue?

Accepted Answer

A)  -r 
B)  -c 
C)  -q 
D)  -v

Question 15

​Match each term with the correct statement below.
a.​baseline
b.buffer overrun​
c.​file handles
d.​firewall daemon (firewalld)
e.​Intrusion Detection System (IDS)
f.​lsof command
g.​nmap command
h.​SSH agent
i.​tunneling
j.tripwire
-A common IDS for Linux that monitors files and directories.​

Accepted Answer

The answer of ​Match each term with the correct statement...

Question 16

​Match each term with the correct statement below.
a.​baseline
b.buffer overrun​
c.​file handles
d.​firewall daemon (firewalld)
e.​Intrusion Detection System (IDS)
f.​lsof command
g.​nmap command
h.​SSH agent
i.​tunneling
j.tripwire
-​A command that lists the files that are currently being viewed or modified by software programs and users.

Accepted Answer

The answer of ​Match each term with the correct statement...

Question 17

How can netfilter/iptables be used to create a firewall service?

Accepted Answer

The answer of How can netfilter/iptables be used to create...

Question 18

​Asymmetric encryption uses a pair of keys that are unique generated on each system. What are these two keys called?

Accepted Answer

A)  ​normal key 
B)  ​public key 
C)  ​secret key 
D)  ​private key

Question 19

If network services that are started by inetd or xinetd are in use, what can be used to provide extra security?

Accepted Answer

A)  network bootstrapper 
B)  TCP wrapper 
C)  IP wrapper 
D)  daemon launcher

Question 20

​Match each term with the correct statement below.
a.​baseline
b.buffer overrun​
c.​file handles
d.​firewall daemon (firewalld)
e.​Intrusion Detection System (IDS)
f.​lsof command
g.​nmap command
h.​SSH agent
i.​tunneling
j.tripwire
-​A program that can be used to detect unauthorized access to a Linux system.

Accepted Answer

The answer of ​Match each term with the correct statement...

Exam 14: Troubleshooting, Performance, and Security

Which command can be used to see what network services are running on your network?

What methods can be used to physically secure local computers?

What option can be specified with the rpm command to identify any missing files in a package or package dependency?

How can you identify filesystem corruption? How should you troubleshoot filesystem corruption on a non-critical partition?

What are the two most common technologies that provide asymmetric encryption on Linux systems?

If applications run into difficulties gaining resources during execution and stop functioning, restarting the process using a specific kill signal may resolve the issue. Select the proper kill signal below:

What is the most common hardware component to fail on a Linux system?

Running background processes using what command allows you to exit your command-line shell without ending any background processes?

Older hardware that is malfunctioning may begin to send large amounts of information to the CPU when not in use. What is this process called?

What are the two golden rules that should guide you during any troubleshooting process? Describe each rule.

What command can be used to change the maximum number of file handles that can be used by a program?

If X Windows fails to start, what command can be used to troubleshoot the issue?

Which sar command option is used to display statistics for the processor queue?

Match each term with the correct statement below. a.baseline b.buffer overrun c.file handles d.firewall daemon (firewalld) e.Intrusion Detection System (IDS) f.lsof command g.nmap command h.SSH agent i.tunneling j.tripwire -A common IDS for Linux that monitors files and directories.

How can netfilter/iptables be used to create a firewall service?

Asymmetric encryption uses a pair of keys that are unique generated on each system. What are these two keys called?

If network services that are started by inetd or xinetd are in use, what can be used to provide extra security?

Match each term with the correct statement below. a.baseline b.buffer overrun c.file handles d.firewall daemon (firewalld) e.Intrusion Detection System (IDS) f.lsof command g.nmap command h.SSH agent i.tunneling j.tripwire -A program that can be used to detect unauthorized access to a Linux system.

Exam 14: Troubleshooting, Performance, and Security

Which command can be used to see what network services are running on your network?

What methods can be used to physically secure local computers?

What option can be specified with the rpm command to identify any missing files in a package or package dependency?

How can you identify filesystem corruption? How should you troubleshoot filesystem corruption on a non-critical partition?

​What are the two most common technologies that provide asymmetric encryption on Linux systems?

If applications run into difficulties gaining resources during execution and stop functioning, restarting the process using a specific kill signal may resolve the issue. Select the proper kill signal below:

What is the most common hardware component to fail on a Linux system?

Running background processes using what command allows you to exit your command-line shell without ending any background processes?

Older hardware that is malfunctioning may begin to send large amounts of information to the CPU when not in use. What is this process called?​

What are the two golden rules that should guide you during any troubleshooting process? Describe each rule.

What command can be used to change the maximum number of file handles that can be used by a program?​

​If X Windows fails to start, what command can be used to troubleshoot the issue?

Which sar command option is used to display statistics for the processor queue?

How can netfilter/iptables be used to create a firewall service?

​Asymmetric encryption uses a pair of keys that are unique generated on each system. What are these two keys called?

If network services that are started by inetd or xinetd are in use, what can be used to provide extra security?

What are the two most common technologies that provide asymmetric encryption on Linux systems?

Older hardware that is malfunctioning may begin to send large amounts of information to the CPU when not in use. What is this process called?

What command can be used to change the maximum number of file handles that can be used by a program?

If X Windows fails to start, what command can be used to troubleshoot the issue?

Asymmetric encryption uses a pair of keys that are unique generated on each system. What are these two keys called?