1. What command-line tool can you use to check the status of a network port and see if it's open or closed on a remote host?
- **Answer:** You can use the `nmap` command-line tool to check the status of network ports on a remote host. For example:
```
nmap <remote_host>
```
2. Which utility can you use to configure and manage network interfaces dynamically without restarting the networking subsystem in Linux?
- **Answer:** You can use the `ip` command-line utility along with the `ip link` and `ip addr` commands to configure and manage network interfaces dynamically without restarting the networking subsystem. For example:
```
ip link set dev eth0 up
```
or
```
ip addr add <ip_address>/<subnet_mask> dev eth0
```
3. What command-line tool can you use to display detailed information about network statistics,
including interfaces, protocols, and more?
- **Answer:** The `netstat` command-line tool can be used to display detailed information about network statistics. For example:
```
netstat -a
```
4. Which tool can you use to create and manage network bridges in Linux?
- **Answer:** You can use the `brctl` (Bridge Control) command-line utility to create and manage network bridges in Linux.
5. What command-line utility can you use to measure the bandwidth and transfer speeds between two hosts?
- **Answer:** You can use the `iperf` command-line utility to measure bandwidth and transfer speeds between two hosts. For example:
```
iperf -c <destination_host>
```
These tools are essential for network troubleshooting, configuration, and performance measurement in a Linux environment.
