Network+

Скачать в pdf «Network+»


Know what an incremental backup is, and explain the differences between the full, incremental, and differential backups. Each backup type differs primarily in the amount backed up and whether the items being backed up have changed. Incremental backups are usually used in


conjunction with full backups and back up everything that has changed since the last backup (full or incremental).


Know what a differential backup is, and explain the differences between the full, incremental, and differential backups. Each backup type differs primarily in the amount backed up and whether the items being backed up have changed. Differential backups are also used in conjunction with a full backup and back up everything that has changed since the last full backup.


Be able to describe why backups are important. Backups are used to have a duplicate copy of any data so that in the case of hardware failure or data loss, the information can be obtained from the backup media.


Be able to describe different types of backup media. The most common backup media include various forms of magnetic tape (DAT, Travan, DLT, etc.) and CD-ROM (CD-RW, DVD-ROM, etc.). Magnetic tape uses a plastic tape coated with metal oxide particles to store the data. It’s inexpensive, but has a finite life and relatively slow speed. CD-ROMs have a much longer life and higher speeds, but much smaller capacities.

Review Questions


1.    What type of communication does a failover server typically have with the primary server?


A.    Total. They are two virtual servers in the same box.


B. The two machines are in different sites connected by a modem.

Скачать в pdf «Network+»