L102

LPIC102.md

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+## Part 1: Fill in the Blank
+1) journalctl
+2) /etc/resolve.conf
+3) age
+4) httpd.conf
+5) hexadecimal values
+6) -R
+7) LD_LIBRARY_PATH
+8) systemctl stop ssh
+9) netstat -r
+10) /etc/crontab
+
+## Part 2: Multiple Choice Questions
+11) B
+12) C
+13) C
+14) B
+15) C
+16) C
+17) B
+18) A
+19) B
+20) B
+
+## Part 3: Practical and Short Answer Questions 
+21) ```sh
+    -> ~ sudo vi /etc/crontab
+    00 02 * * 4 /path/to/backup.sh
+    ```
+22) |Hard links    | Soft links       |
+    |-------------------|------------------------|
+    |It is a *reference* to the inode of the original file.|It is a *pointer* to the path to the file. |
+    |It shares the same inode as the original file.|It does not share the same inode as the original file |
+    |It can't me made for directories or across several file systems.|It can be made for directories and across several file systems.|
+
+23) Configuring a static IP address on a network interface `eth0`:
+     ```sh
+        -> ~ sudo ifconfig eth0 192.168.5.1 netmask 255.255.255.0
+     ```
+24) ```sh
+        -> chmod -R 755 path/to/directory
+    ```
+25) The `/etc/nsswitch` is a configuration file that is used to configure which services are to be used to determine information such as hostnames, passowrd files, and group files.
+    **Example**:
+     ```sh
+      passwd:      files systemd
+     ```
+26) ```sh
+        -> ~ chmod g+s sshusers/
+    ```
+27) `ufw` is more simple to use, and writes its iptables rules in the *background*. While, `iptables` are the low-level kernel technology which implements *firewall rules*.
+