ch 5; 21-30 Flashcards
Unix
-The oldest and most powerful operating system (early 1970’s)
-Versions run on multiple types of computers
-With over 200 commands, has reputation for being hard to learn
-Often used to manage networks (i.e. NOS)
-Most other operating systems based on UNIX
=Mac OSX, Linux, iOS, Android, etc.
Peer-to-Peer Network
-Type of network normally used at home
-Each computer/device is considered equal
-No centralized authority (no common user accounts, for example)
-Each device can share its resources with other devices
Utility Software
-A type of system software used to perform computer maintenance
-Disk utilities
-Security utilities
Disk Formatting Utility
-Prepares a hard disk to store files by setting up the file system
-Only needs to be done once
-Creates File system (controls how data is stored and retrieved)
=MS-Windows: NTFS (latest) and FAT
=Mac OSX: APFS (latest) and HFS+
Other MS-Window Disk Utilities
-Check Disk - checks for problems with the physical disk itself and for problems with the file system
-Optimize Drive - defragments a hard drive to improve efficiency
-Disk Cleanup - looks for files that can be safely deleted to free up disk space
-Mac OSX has Disk Utility, which is similar to Check Disk, but does not need utilities for optimizing and cleaning drives
Security Utilities
-Firewall - a device or software that blocks unauthorized access to a network or an individual computer
-Antivirus program - protects against computer viruses (and worms and Trojan horses)
-Antispyware program - protects against spyware and adware
Troubleshooting
-Reboot - most common “solution” when something goes wrong
=Seems like a cop-out but usually works
-Task Manager (MS-Windows) / Activity Monitor (Mac OSX)
=Used to view processes (programs) running on the computer
=Can force processes to quit
=Can also view how much memory each process is using and how much of the CPU it is using
