Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
HW2 - midterm 1
CST8190 - midterm 1
| Question | Answer |
|---|---|
| Advantages of SSD? | Speed(5-10x), Reliability (no moving parts), Weight + Power |
| Disadvantage of SSD? | Cost, Finite lifetime, Garbage collection |
| Types of NAND (Flash memory) | Single-Level Cell (SLC), Multi-Level Cell (MLC). MLC used in consumer level. |
| How does SSD write data? | Writes data in pages (smallest portion that can be addressed) |
| How does SSD delete data? | Deletes data in blocks, made up of multiple (hundreds of pages). Voltage problems make it so must delete in blocks. |
| Garbage Collection | Allows SSD to reuse stale pages. Pages storing data in a block with stale pages are copied to another block so that original block can be erased/reused. |
| Do drives know about file system? | Most do not, they only manage where data is stored. OS tells drive to delete a file, SSD realizes that data is now stale. |
| TRIM | Gives the SSD better information so garbage collection can work more efficiently. |
| Write Amplification | multiplying effect of the amount of data a user has saved and how often it has been copied and moved. |
| Wear Leveling | Attempt to write data as evenly as possible to extend the drive's full capacity and performance. |
| Troubleshooting Process step 1: | Identify problem, symptoms |
| Troubleshooting Process step 2: | Establish theory of cause, look for clues, determine one possible reason for current condition |
| Troubleshooting Process step 3: | Test the Theory. Find out if what you think the solution is the actual solution? |
| Troubleshooting Process step 4: | Establish an action plan and implement solution. Do what needs to be done to solve problem. |
| Troubleshooting Process step 5: | Verify functionality. |
| Troubleshooting Process step 6: | Document findings. |
| Rotational Speeds for Hard Drives | 3.6k, 5.4k-7.2k, 10k, 15k |
| HD Sectors hold how many bytes? | 512B or 4kB(Advanced Format) |
| Differential Backup | Saves all changes since full backup in 1 media. At most 2 backup media required to restore data, faster than incremental for restore. |
| Incremental Backup | Saves all changes since last backup (full/incremental). Faster backup, smaller media per incremental. To restore requires multiple backup media. |
| What is an integrated and dedicated servo? | HD heats up, changes shape, head could be misaligned. Servo protects against, integrated goes through platter, dedicated sits on bottom. |
| Pins on memory: | Laptop:(DDR1+2= 200, DDR3= 204), Desktop:DDR2/3=240, DDR1=184 |
| MXM | Mobile PCI Express Module, Graphics module in laptops, used for upgrade |
| Installing new wireless card into a new laptop what type? | Mini PCI |
| Cause of screen flickering or very dark laptop monitor | Inverter or CCFL |
| What parts of laptop better for technician to replace? | CPU, motherboard, anything hard to get to. |
| Purpose of function key, what can it do? | Activates secondary ability of a key. Brightness, volume, wireless, monitor select... |
| Components that can fit into a system but may not be compatible? | RAM, CPU |
| Error messages when system files are missing | ntldr loader is missing / booting to safe mode = change boot.ini |
| Coarse Screws used in: | case, expansion slots, HD |
| Fine thread screws used in: | optical+floppy |
| Virus types | Worms, Rootkit, Boot Sector, Trojan, Malware, keylogger, phishing. |
| Firewall vs. Network intrusion software? | Firewall = active, Network Intrusion = passive |
| Why uncheck hide known file extensions? | masked programs (security) |
| When physically setting up a server what should you be concerned with? | security, UPS, properly grounded, cooled |
| What happens when your CMOS battery dies or is cleared? | date/time/hardware settings all get reset or if dead wont be remembered every reboot. |
| Why would you deliberately delete CMOS data? | clear BIOS password |
| SATA uses master/slave? | false |
| 80 pin IDE cables/color uses | Blue: motherboard, Grey: slave, Black: master |
| Main motherboard power connector name/pins? | P1 / Main ATX - 24 |
| Pins: SATA | 15 |
| Backwards floppy connector? | light stays on all the time...also won't work |
| Tailgating? | getting through a security door someone else opens |
| System files corrupt! What to do? | Recovery console from windows DVD |
| Low level problems in a bricked system? | take off non mandatory items? |
| Mandatory items to start a computer? | CPU, power, video card, memory, motherboard |
| Power connector for a floppy drive? | Berg (4 pin) |
| What can be done to limit hardware/software problem downtime? | Backup systems, hot swaps, images, replacement hardware |
| What is software like deepfreeze used for? | All changes made to computer are wiped on reset |
| Physical computer security? | lock usb(ports), lock computer to desk, multifactor ID (fingerprint+password+whatevs) |
| Form factors of motherboards? | At, Baby AT, ATX, Micro-ATX, Mini-ITX, NLX, BTX/Micro-BTX |
| 137 gig limitation/solution? | Old ATA protocol, 28 address bits to specify sectors. New 32 bit address can take 256 TB. |
Created by:
Datheral
Popular Computers sets