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This questionnaire contains 10 problems.
SUPERSET
POSTERIOR
Competence DevOps and Security Engineer
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Problem 1 of 10
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Firewall Rules
Solutions for this problem:
Show Rules
Rules
Status Numbered
Active
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The Detection
Solutions for this problem:
The Packet Inspection
The Call Tracing
The Pattern
The Hooks
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The Bash Command
Solutions for this problem:
The Question Command
The Exit
The Status
The Return
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The Bitbucket
Solutions for this problem:
The Merge
The Branch
The Pipeline
The Fork
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The Default Port
Solutions for this problem:
The First Port
The Second Port
The Third Port
The Fourth Port
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The Python Module
Solutions for this problem:
The First Module
The Second Module
The Third Module
The Fourth Module
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The Linux System
Solutions for this problem:
The First Command
The Second Command
The Third Command
The Fourth Command
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The Linux Permission
Solutions for this problem:
Permission One
Permission Two
Permission Three
Permission Four
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The Debugging
Solutions for this problem:
The First Tool
The Second Tool
The Third Tool
The Fourth Tool
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The Infrastructure Management
Solutions for this problem:
The First Way
The Second Way
The Third Way
The Fourth Way
Firewall Rules
Requirements
Which command lists all active firewall rules in ufw?
Show Rules
Solution Steps
No solution steps available.
Answer
ufw show rules
Rules
Solution Steps
No solution steps available.
Answer
ufw list
Status Numbered
Solution Steps
No solution steps available.
Answer
ufw status numbered
Active
Solution Steps
No solution steps available.
Answer
ufw active
The Detection
The Packet Inspection
Solution Steps
No solution steps available.
Answer
Real-time packet inspection
The Call Tracing
Solution Steps
No solution steps available.
Answer
System call tracing
The Pattern
Solution Steps
No solution steps available.
Answer
Log file pattern matching
The Hooks
Solution Steps
No solution steps available.
Answer
Kernel hooks
The Bash Command
Requirements
Which Bash command returns the exit status of the last executed command?
The Question Command
Solution Steps
No solution steps available.
Answer
$?
The Exit
Solution Steps
No solution steps available.
Answer
exit
The Status
Solution Steps
No solution steps available.
Answer
status
The Return
Solution Steps
No solution steps available.
Answer
return
The Bitbucket
Requirements
Which Bitbucket feature allows you to restrict who can push to a branch?
The Merge
Solution Steps
No solution steps available.
Answer
Merge checks
The Branch
Solution Steps
No solution steps available.
Answer
Branch permissions
The Pipeline
Solution Steps
No solution steps available.
Answer
Pipeline triggers
The Fork
Solution Steps
No solution steps available.
Answer
Fork protection
The Default Port
Requirements
What is the default port for SSH?
The First Port
Solution Steps
No solution steps available.
Answer
21
The Second Port
Solution Steps
No solution steps available.
Answer
22
The Third Port
Solution Steps
No solution steps available.
Answer
80
The Fourth Port
Solution Steps
No solution steps available.
Answer
443
The Python Module
Requirements
Which Python module is best for executing shell commands securely?
The First Module
Solution Steps
No solution steps available.
Answer
os.system()
The Second Module
Solution Steps
No solution steps available.
Answer
subprocess.run()
The Third Module
Solution Steps
No solution steps available.
Answer
exec()
The Fourth Module
Solution Steps
No solution steps available.
Answer
shutil.call()
The Linux System
Requirements
Which command shows open ports and listening services on a Linux system?
The First Command
Solution Steps
No solution steps available.
Answer
netstat -tuln
The Second Command
Solution Steps
No solution steps available.
Answer
lsblk
The Third Command
Solution Steps
No solution steps available.
Answer
df -h
The Fourth Command
Solution Steps
No solution steps available.
Answer
ps aux
The Linux Permission
Requirements
What does the chmod 700 command do to a file?
Permission One
Solution Steps
No solution steps available.
Answer
Makes it readable by everyone
Permission Two
Solution Steps
No solution steps available.
Answer
Grants full access to owner only
Permission Three
Solution Steps
No solution steps available.
Answer
Deletes the file
Permission Four
Solution Steps
No solution steps available.
Answer
Locks the file
The Debugging
Requirements
Which tool would you use to detect memory leaks in a C++ application?
The First Tool
Solution Steps
No solution steps available.
Answer
gdb
The Second Tool
Solution Steps
No solution steps available.
Answer
valgrind
The Third Tool
Solution Steps
No solution steps available.
Answer
strace
The Fourth Tool
Solution Steps
No solution steps available.
Answer
top
The Infrastructure Management
Requirements
What’s the best way to rotate SSH keys across multiple servers?
The First Way
Solution Steps
No solution steps available.
Answer
Manually edit .ssh/authorized_keys
The Second Way
Solution Steps
No solution steps available.
Answer
Use a configuration management tool like Ansible
The Third Way
Solution Steps
No solution steps available.
Answer
Reboot all servers
The Fourth Way
Solution Steps
No solution steps available.
Answer
Disable SSH temporarily
PRIOR
SUBSET