Linux Network Automation Scripting Quiz

1. How do you redirect both stdout and stderr to the same file in bash?

Command > file 2>&1

Command 2> file

Command &> file 1

Command > file 2> file

2. What does the 'cron' service enable in Linux network automation?

Running scripts at scheduled intervals

Compressing log files

Encrypting network traffic

Managing user permissions

3. Which command retrieves DNS information and performs DNS lookups in detail?

Nslookup

Dig

Host

All of the above

4. In bash, what does 'for' loop syntax allow you to do in network scripts?

Iterate through multiple hosts or ranges

Execute commands conditionally

Capture error messages

Compress network data

5. Which command shows listening ports and their associated processes?

Netstat -tlnp

Ss -tlnp

Both A and B

Lsof -i

6. How do you make a bash script executable?

Chmod +x script.sh

Chmod 755 script.sh

Both A and B

Sudo run script.sh

7. What is the purpose of 'grep' when analyzing network command output?

Filter output to show only matching lines

Sort network data

Count network packets

Resolve IP addresses

8. Which command displays network interface statistics and errors?

Ethtool

Ifstat

Ip -s link

All of the above

9. In a shell script, what does 'if [ -z "$var" ]' test for?

If variable is empty or unset

If variable is not empty

If variable equals zero

If variable is a number

10. Which tool traces the route packets take to reach a destination host?

Traceroute

Mtr

Both A and B

Iptables

11. Which command displays real-time network statistics and active connections on a Linux system?

Netstat

Ifconfig

Route

Ping

12. What does 'ip addr show' display on modern Linux systems?

Routing table only

IP addresses and network interface configuration

ARP cache entries

Open network ports

13. Which command tests TCP connectivity to a specific port on a remote host?

Nc -zv host port

Arp host

Whois host

Nmap host

14. In bash scripting, what does the '&&' operator do when chaining commands?

Runs commands in parallel

Executes next command only if previous succeeds

Runs commands regardless of status

Pipes output between commands

15. Which command displays the kernel routing table on Linux?

Route -n

Ip route show

Netstat -r

All of the above

16. How would you check if a remote host is reachable using ICMP in a script?

Telnet host 80

Ping -c 1 host

Curl host

Ssh host

17. What does the '-n' flag in netstat or ss prevent from happening?

Displaying numeric IP addresses

Resolving hostnames to IP addresses

Showing network interfaces

Listing listening ports

18. Which tool is used to perform DNS lookups and diagnose DNS resolution issues?

Dig

Arp

Ifstat

Ethtool

19. In a bash script, which syntax correctly captures command output into a variable?

Var = command

Var=$(command)

Var{command}

Var>[command]

20. What does the 'ss' command primarily replace in modern Linux distributions?

Iptables

Netstat

Traceroute

Nslookup

Linux Network Pro Automating Network Checks with a Script Quiz

1. How do you redirect both stdout and stderr to the same file in bash?

2.

What first name or nickname would you like us to use?

2. What does the 'cron' service enable in Linux network automation?

3. Which command retrieves DNS information and performs DNS lookups in detail?

4. In bash, what does 'for' loop syntax allow you to do in network scripts?

5. Which command shows listening ports and their associated processes?

6. How do you make a bash script executable?

7. What is the purpose of 'grep' when analyzing network command output?

8. Which command displays network interface statistics and errors?

9. In a shell script, what does 'if [ -z "$var" ]' test for?

10. Which tool traces the route packets take to reach a destination host?

11. Which command displays real-time network statistics and active connections on a Linux system?

12. What does 'ip addr show' display on modern Linux systems?

13. Which command tests TCP connectivity to a specific port on a remote host?

14. In bash scripting, what does the '&&' operator do when chaining commands?

15. Which command displays the kernel routing table on Linux?

16. How would you check if a remote host is reachable using ICMP in a script?

17. What does the '-n' flag in netstat or ss prevent from happening?

18. Which tool is used to perform DNS lookups and diagnose DNS resolution issues?

19. In a bash script, which syntax correctly captures command output into a variable?

20. What does the 'ss' command primarily replace in modern Linux distributions?