Services in Linux that start at boot and run in the background are commonly referred to as daemons. Daemons are long-running background processes that perform various tasks such as serving network requests, managing hardware devices, and more.

The primary configuration file for setting up static routes on a Linux system is "/etc/network/interfaces." This file is used to define static routes, including the destination network, gateway, and netmask.

For an SSH server, the main configuration file is found at /etc/ssh/**sshd_config**. This file contains various settings for the SSH server, including authentication methods, allowed users, and more.

To set a system's DNS resolver addresses in Linux, you would edit the /etc/resolv.conf file. This file contains the IP addresses of the DNS servers that the system should use for domain name resolution.

The ps command in Linux provides a snapshot of the current processes in the system. It displays detailed information about running processes, including their process IDs (PIDs), CPU and memory usage, and other vital statistics.

The fdisk command is used to view the partition table of a disk in Linux. It provides a detailed view of the partitions on the disk, their sizes, types, and more.

In SSH, the private key should be kept secure, and the public key is added to the server for authentication. The server uses the public key to verify the identity of the connecting client.

The kernel component responsible for memory management, including memory allocation and page replacement, is the Virtual Memory Manager (VMM). The VMM is an integral part of the Linux kernel and ensures efficient utilization of physical and virtual memory resources.

The testparm tool in Samba is used to check the configuration file for errors. It helps you validate your Samba configuration to ensure that it is correctly formatted and free of syntax errors. Running testparm is a useful step in troubleshooting Samba configuration issues.

Ubuntu is a Linux distribution that is commercially backed by Canonical. Canonical provides support and services for Ubuntu, making it a popular choice for both desktop and server environments.