Computers
What remedies can you try if your computer or application runs sluggishly
- Remove unnecessary files and uninstall seldom used programs and apps - Defragmenting the hard disk - Purchase and install additional RAM
What is the role of an operating system:
- Starting/shutting down the computer - Providing a user interface - Managing programs - Managing memory - Coordinating tasks - Configuring devices - Monitoring performances - Establishing internet connection - File management - Updating operating system software
What duties does a network administrator perform
A network administrator oversees network operations, uses the server operating system to add and remove users, computers and other devices to and from network. Also uses the operating system on the network to configure the network, install software and administer network security
What are some popular mobile OS
Android IOS and Windows phone
Why do computers running Chrome OS require less internal storage capacity than those running other desktop operating systems
Because computers running Chrome OS work mostly with web apps, they do not require as much internal storage capacity as other desktop OS systems
Type of education in which students learn by using and completing exercises with instrumental software
CBT
An operating system must reside inside a computer or mobile device; that is, it cannot run from a USB or flash drive T/F
F
The kernel is nonresident, which means it remains in memory while the computer or mobile device is running. T/F
F
An upward compatible application means it can work and recognize with applications written for an earlier version of the operating system T/F
F - backward compatible
Most users today work with a command line interface T/F
F - graphical user interface
Linux is proprietary software T/F
F- open source
What does firmware do
Firmware consists of ROM chips or flash memory chips that store permanent insturctions
In a multi user operating system, are tasks processed on a first come first served basis, why or why not?
No, if a user has been assigned a higher priority than others by a network administration, the operating system performs higher priority tasks first
Instructions remain on a storage medium until they are needed, at which time they transfer into memory (RAM)
Nonresident memory
Destructive event or prank a virus was created to deliver
Payload
Computing environment where an internet server hosts and deploys applications
Personal Firewall
Scam in which a perpetrator sends an official looking email message that attempts to obtain personal and/or financial information.
Phishing
Square shaped graphic that presents a web address or other information
QR code
Separate area of a hard drive that holds an infected file until the infection can be removed
Quarantine
Kernel remains in memory while the computer or mobile device us running
Resident memory
Copyrighted software that is distributed at no cost for a trial period
Shareware
Security tool that detects and protects a personal computer and its data from unauthorized intrusions
Software as a service
A user interface controls how you enter data and instructions and how information is displayed T/F
T
Each device connected to a computer requires its own specific driver T/F
T
Hackers often look for ways to break into a computer or device using flaws in the operating system T/F
T
Many of the first OS were device dependent and proprietary T/F
T
Most operating systems today are multitasking T/F
T
Operating systems that function both as desktop and server operating systems sometimes are called multipurpose operating systems T/Ft
T
The area of a hard drive used for virtual memory is called a swap file T/F
T
What is a platform
The operating system a computer sometimes uses
Why do some users find command line interface difficult to use
They require exact spelling, form and punctuation
Program that enables you to perform maintenance type tasks usually related to managing devices, media and programs and used by computers and mobile device
Tools
In terms of speed, how does virtual memory compare with RAM?
Virtual memory is slower than RAM
What are some widely used desktop operating sytems
Windows, Mac OS, UNIX, Linux and Chrome OS
What is the role of virtual memory
With virtual memory, the operating system allocates a portion of a storage medium, such as a hard drive, or a USB flash drive, to function as additional RAM.
Malware that resides in active memory and replicates itself over a network to infect computers and devices, using up the system resources and possibly shutting down the system
Worm
What is the advantage of a device independent operating system
You can retain existing applications and data files even if you change computer or mobile device models or vendors
Additional programs and apps included with operating systems, usually for profit
bloatware
Segment of memory or storage in which items are placed while waiting to be transferred from an input device or to an output device
buffer
Starting a computer from a state where it is powered off completely
cold boot
Set of commands used to control actions performed in a command line interface
command language
A _______________________ application is an application that runs the same on multiple operating systems
cross platform
Small program that tells the operating system how to communicate with a specific device
driver
What built in security tools are included in most operating systems
file manager search image review uninstaller disk cleanup disk defragmentor screen saver file compression PC maintenance backup restore
ROM chips or flash memory chips that store permanent instructions
firmware
Placing a computer in ______________ mode saves any open documents and running programs or apps to an internal hard drive before power is removed from the computer or device
hibernate
The core of an operating system that manages memory and devices, maintains an internal clock, runs programs and assigns resources such as devices, programs, apps, data and info
kernel
A ______________ operating system allows 2 or more programs or apps to reside in memory at the same time
multitasking
With ___________ interface, users interact with the software through ordinary, intuitive behavior
natural user interface
The technique of swapping items between memory and storage is called _____________________
paging
A ______________ is a multi user operating system that organizes and coordinates how multiple users access and share resources on a network
server operating system
Free downloadable updates are sometimes called a _____________
service pack
Saves any open documents and running programs or apps to RAM, turns off all unneeded functions, then places the computer in a low power state
sleep mode
Operating system problem that occurs when it spends much of its time paging instead of executing application software
thrashing
In windows, a _______________ is a shortcut to apps or other content.
tile
With ______________ the operating system allocates a portion of a storage medium to function as additional RAM
virtual memory
Restarting a computer while it remains powered on
warm boot