Certified Network Associate - Blue (LINUX OS,
WINDOWS OS, AND NETWORKING) WITH CORRECT ANSWERS
Comprehensive Certification Exam Preparation
100 Questions - Official CNAB Certification Blueprint
Entry-Level IT Support Certification
SECTION DISTRIBUTION
Official CNAB Certification Examination Blueprint
Section Questions Percentage
Linux Operating System 35 (Q1-Q35) 35%
Windows Operating System 35 (Q36-Q70) 35%
Networking Fundamentals 30 (Q71-Q100) 30%
TOTAL 100 100%
Cognitive Distribution:
• 40% Recall (commands, OSI layers, port numbers)
• 45% Application (select correct command, troubleshoot, calculate subnet)
• 15% Analysis (interpret output, diagnose failure, identify misconfiguration)
Special Question Types Included:
• 5 Linux command scenarios (file permissions, process termination, file search)
• 5 Windows command scenarios (IP renewal, DNS flush, process kill, route print)
• 3 Subnetting calculations (network address, broadcast, usable hosts, CIDR)
• 2 Port/protocol identification questions
• 1 DHCP process order (DORA)
• 1 OSI layer identification scenario
,SECTION 1: LINUX OPERATING SYSTEM
Questions and Answers
Q1: Which Linux command displays real-time, updating process information including CPU and
memory utilization?
A. ps -ef
B. top
C. ls -l
D. kill -9
Correct Answer: B
Rationale: Correct because top displays real-time, dynamic process information with updating CPU,
memory, and process list; ps provides a static snapshot.
Q2: Which Linux command changes file permissions to give the owner read, write, and
execute (7), group read and execute (5), and others read only (4) for a file named script.sh?
A. chmod 754 script.sh
B. chmod 755 script.sh
C. chmod 751 script.sh
D. chmod 745 script.sh
Correct Answer: A
Rationale: Correct because chmod numeric permissions: first digit (7) for owner (4+2+1=7 rwx), second
digit (5) for group (4+1=5 r-x), third digit (4) for others (4 r--).
Q3: A Linux user needs to find all files with the ".conf" extension in the /etc directory and its
subdirectories. Which command does this?
A. find /etc -name "*.conf"
B. grep -r ".conf" /etc
, C. ls -R /etc | grep .conf
D. locate .conf /etc
Correct Answer: A
Rationale: Correct because find /etc -name "*.conf" searches recursively from /etc for files matching the
pattern; -name is case-sensitive.
Q4: Which Linux command displays the current working directory?
A. ls
B. pwd
C. cd
D. dir
Correct Answer: B
Rationale: Correct because pwd (print working directory) displays the full path of the current directory; ls
lists contents, cd changes directory.
Q5: Which command creates a new directory named "projects" in the current location?
A. touch projects
B. mkdir projects
C. rmdir projects
D. mk projects
Correct Answer: B
Rationale: Correct because mkdir (make directory) creates a new directory; touch creates files, rmdir
removes empty directories.
Q6: Which Linux command recursively copies the entire directory /var/log to /backup/logs?
A. cp /var/log /backup/logs
B. cp -r /var/log /backup/logs
, C. mv /var/log /backup/logs
D. scp /var/log /backup/logs
Correct Answer: B
Rationale: Correct because cp -r recursively copies directories and their contents; without -r, cp cannot
copy directories.
Q7: Which command forcefully terminates a process with PID 1234 in Linux?
A. kill -15 1234
B. kill -9 1234
C. killall 1234
D. pkill 1234
Correct Answer: B
Rationale: Correct because kill -9 sends SIGKILL (signal 9), which forcefully terminates the process
immediately without cleanup; SIGTERM (15) allows graceful shutdown.
Q8: Which Linux command is used to change the owner of a file named data.txt to user
"admin"?
A. chown admin data.txt
B. chmod admin data.txt
C. chgrp admin data.txt
D. usermod admin data.txt
Correct Answer: A
Rationale: Correct because chown (change owner) modifies file ownership; chmod changes permissions,
chgrp changes group ownership.
Q9: Which command displays the first 10 lines of a file named /var/log/syslog?
A. tail /var/log/syslog
WINDOWS OS, AND NETWORKING) WITH CORRECT ANSWERS
Comprehensive Certification Exam Preparation
100 Questions - Official CNAB Certification Blueprint
Entry-Level IT Support Certification
SECTION DISTRIBUTION
Official CNAB Certification Examination Blueprint
Section Questions Percentage
Linux Operating System 35 (Q1-Q35) 35%
Windows Operating System 35 (Q36-Q70) 35%
Networking Fundamentals 30 (Q71-Q100) 30%
TOTAL 100 100%
Cognitive Distribution:
• 40% Recall (commands, OSI layers, port numbers)
• 45% Application (select correct command, troubleshoot, calculate subnet)
• 15% Analysis (interpret output, diagnose failure, identify misconfiguration)
Special Question Types Included:
• 5 Linux command scenarios (file permissions, process termination, file search)
• 5 Windows command scenarios (IP renewal, DNS flush, process kill, route print)
• 3 Subnetting calculations (network address, broadcast, usable hosts, CIDR)
• 2 Port/protocol identification questions
• 1 DHCP process order (DORA)
• 1 OSI layer identification scenario
,SECTION 1: LINUX OPERATING SYSTEM
Questions and Answers
Q1: Which Linux command displays real-time, updating process information including CPU and
memory utilization?
A. ps -ef
B. top
C. ls -l
D. kill -9
Correct Answer: B
Rationale: Correct because top displays real-time, dynamic process information with updating CPU,
memory, and process list; ps provides a static snapshot.
Q2: Which Linux command changes file permissions to give the owner read, write, and
execute (7), group read and execute (5), and others read only (4) for a file named script.sh?
A. chmod 754 script.sh
B. chmod 755 script.sh
C. chmod 751 script.sh
D. chmod 745 script.sh
Correct Answer: A
Rationale: Correct because chmod numeric permissions: first digit (7) for owner (4+2+1=7 rwx), second
digit (5) for group (4+1=5 r-x), third digit (4) for others (4 r--).
Q3: A Linux user needs to find all files with the ".conf" extension in the /etc directory and its
subdirectories. Which command does this?
A. find /etc -name "*.conf"
B. grep -r ".conf" /etc
, C. ls -R /etc | grep .conf
D. locate .conf /etc
Correct Answer: A
Rationale: Correct because find /etc -name "*.conf" searches recursively from /etc for files matching the
pattern; -name is case-sensitive.
Q4: Which Linux command displays the current working directory?
A. ls
B. pwd
C. cd
D. dir
Correct Answer: B
Rationale: Correct because pwd (print working directory) displays the full path of the current directory; ls
lists contents, cd changes directory.
Q5: Which command creates a new directory named "projects" in the current location?
A. touch projects
B. mkdir projects
C. rmdir projects
D. mk projects
Correct Answer: B
Rationale: Correct because mkdir (make directory) creates a new directory; touch creates files, rmdir
removes empty directories.
Q6: Which Linux command recursively copies the entire directory /var/log to /backup/logs?
A. cp /var/log /backup/logs
B. cp -r /var/log /backup/logs
, C. mv /var/log /backup/logs
D. scp /var/log /backup/logs
Correct Answer: B
Rationale: Correct because cp -r recursively copies directories and their contents; without -r, cp cannot
copy directories.
Q7: Which command forcefully terminates a process with PID 1234 in Linux?
A. kill -15 1234
B. kill -9 1234
C. killall 1234
D. pkill 1234
Correct Answer: B
Rationale: Correct because kill -9 sends SIGKILL (signal 9), which forcefully terminates the process
immediately without cleanup; SIGTERM (15) allows graceful shutdown.
Q8: Which Linux command is used to change the owner of a file named data.txt to user
"admin"?
A. chown admin data.txt
B. chmod admin data.txt
C. chgrp admin data.txt
D. usermod admin data.txt
Correct Answer: A
Rationale: Correct because chown (change owner) modifies file ownership; chmod changes permissions,
chgrp changes group ownership.
Q9: Which command displays the first 10 lines of a file named /var/log/syslog?
A. tail /var/log/syslog
