Free RHCE System Configuration and Management Questions and Answers

Question 1

What services need to run at boot for NFS (Network File System) to function correctly?

Accepted Answer

rpcbind, nfs, and nfslock

Answer

For NFS (Network File System) to function correctly, several services must be running and enabled at boot. `rpcbind` handles RPC (Remote Procedure Call) program number-to-port mappings, which is essential for NFS communication. The `nfs` service is the core NFS server, and `nfslock` provides crucial file locking services for data integrity when multiple clients access shared files.

Question 2

How do you mount an NFS share from the command line?

Accepted Answer

mount -t nfs server.example.com:/nfs_share /mnt

Answer

To manually mount an NFS share from the command line, the `mount` command is used with the `-t nfs` option to specify the filesystem type. The syntax requires the remote server and export path (`server.example.com:/nfs_share`) followed by the local mount point (`/mnt`). This command temporarily mounts the NFS share for immediate access.

Question 3

How do you mount an NFS share using fstab?

Accepted Answer

nfsserver:/exports /mount-point nfs defaults 0 0

Answer

To automatically mount an NFS share at boot, an entry must be added to the `/etc/fstab` file. The correct format specifies the remote NFS share (`nfsserver:/exports`), the local mount point (`/mount-point`), the filesystem type (`nfs`), mount options (`defaults`), and dump/pass values (`0 0`). This ensures the share is available every time the system starts.

Question 4

How do you add a Samba user?

Accepted Answer

smbpasswd -a engineer1

Answer

To add a user to Samba, you use the `smbpasswd` command with the `-a` (add) option, followed by the username. This command prompts for a new Samba password for the specified user, which is separate from their system password. This allows users to authenticate specifically with Samba shares.

Question 5

How do you install the SELinux GUI?

Accepted Answer

yum install -y policycoreutils-gui

Answer

On Red Hat-based systems, the graphical user interface (GUI) tools for managing SELinux are provided by the `policycoreutils-gui` package. Installing this package via `yum` (or `dnf` on newer systems) provides tools like `sealert` and `system-config-selinux` for easier SELinux configuration and troubleshooting, making policy management more accessible.

RHCE - Red Hat Certified Engineer Practice Test

RHCE - Red Hat Certified Engineer Practice Test

Free RHCE System Configuration and Management Questions and Answers