Advance Linux

 Advance Linux Training

RAID0 (striping)

RAID1 (mirroring)

RAID2 (bit striping)

RAID3 (byte striping)

RAID4 (block striping)

RAID4 stripes data at the block-level and dedicates an entire disk for parity. RAID4 is similar to both RAID2 and RAID3 but significantly improves performance as any read request contained within a single block can be serviced from a single disk. RAID4 is used on a limited basis due to the storage penalty and data corruption vulnerability of dedicating an entire disk to parity.

RAID5 (block striping with striped parity)

Networking Fundamentals 

Managing Network Services 

Managing Security

Identifying problems using log files 

Scheduling Jobs 

 Using the at utility

 Using the batch utility

 Using the crond daemon .

Performing Backups

 Planning the backups

Backup methods 

 Backup media 

Backup commands 

Performing Security Administration Tasks

Configuring TCP wrappers . . 

 SUID security issues 

 Managing packages 

 Using setgid 

 Using SSH Providing Host Security

Using shadow passwords

Removing unused services

 Blocking unwanted connections with IP chains

Controlling authentication with Pluggable Authentication Modules .

Monitoring security lists and sites 

 Limiting Users 

 Checking Security

 nmap