Computer Concepts Final Exam lecture 5 Flashcards
What are the four main ways to trouble shoot a problem on a computer?
Reboot computer, check connections, can roll back fix this issue?, search online for resources
How do you check for connectivity problems and help fix them?
verify that the network adapter is on, device is not on airplane mode, verify the correct network is selected and has valid information.
What is a common cause of failure in configuring hardware?
out of date or missing device driver, incorrectly connecting cables and power surges from main supply line
IT Support Technicians use _____ to help maintain computer systems.
System utilities. Includes disk formatting and file system.
Disk drives are divided into what?
Tracks (concentrate circular bands), sectors (tracks divided into wedges, smallest units of disk storage) and clusters (group of sectors where file is saved to disk)
Use of file systems
Keeps track of what is saved and where, records a table of files on disk. New Technology File System (NTFS) for windows and Apple File System (APFS).
What does a table in a file system contain of?
Files name and location. (cluster, sector and track on disk)
Difference between full back up and incremental back up
Full back up - all files are copied.
Incremental back up - after full back up, only back up files that have changed.
What are the 3 back up options?
External hard drive, Solid-State Drive (fastest), and cloud storage.
What is drive imaging?
creates mirror image of entire hard disk, if disk or computer system fails…image restores entire system.
What is a system restore?
Returns system to previous state before, undoes recent changes but leaves files unchanged.
Why would someone back up to cloud over a hard disk?
Protection from physical elements like theft, fire or natural disaster. Keeps backups offsite which guarantees recovery
What are bugs?
Flaws in the program which can be helped with a software update.
What is the purpose of patch?
addresses individual problems as they are discovered.
Purpose of service pack?
addresses multiple problems or adds features.
Updating software requires ____?
internet connection
What does a surveillance software do?
prevents users from visiting unacceptable sites as well as may look for non-work activity.
What is a cookie?
Websites place small text file on page to keep track of visitors. Helps identify visitors when they return to a site and can collect information we do not want to share.
What is malware?
Programs designed to be harmful or malicious. Can spread across a network and have a whole system crash.
What is sending mass, unsolicited email messages called?
Spamming
What is a computer virus?
program that replicates itself and infects computers.
Payload?
the action of the virus
Why do systems become infected?
Software exploits, lack of security software, unpatched programs and less than competent computer security.
Purpose of software fire wall?
Blocks access to an individual computer, monitors outgoing and incoming network requests, blocks connection from programs not on the allowed list of programs.
JPEG meaning
Joint photographic experts group images. Uses lossly compression to store digital images.
