CST8190 - midterm 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Advantages of SSD? | Speed(5-10x), Reliability (no moving parts), Weight + Power
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| Disadvantage of SSD? | Cost, Finite lifetime, Garbage collection
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| Types of NAND (Flash memory) | Single-Level Cell (SLC), Multi-Level Cell (MLC). MLC used in consumer level.
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| How does SSD write data? | Writes data in pages (smallest portion that can be addressed)
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| 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.
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| 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.
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| 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.
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| TRIM | Gives the SSD better information so garbage collection can work more efficiently.
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| Write Amplification | multiplying effect of the amount of data a user has saved and how often it has been copied and moved.
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| Wear Leveling | Attempt to write data as evenly as possible to extend the drive's full capacity and performance.
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| Troubleshooting Process step 1: | Identify problem, symptoms
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| Troubleshooting Process step 2: | Establish theory of cause, look for clues, determine one possible reason for current condition
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| Troubleshooting Process step 3: | Test the Theory. Find out if what you think the solution is the actual solution?
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| Troubleshooting Process step 4: | Establish an action plan and implement solution. Do what needs to be done to solve problem.
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| Troubleshooting Process step 5: | Verify functionality.
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| Troubleshooting Process step 6: | Document findings.
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| Rotational Speeds for Hard Drives | 3.6k, 5.4k-7.2k, 10k, 15k
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| HD Sectors hold how many bytes? | 512B or 4kB(Advanced Format)
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| 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.
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| Incremental Backup | Saves all changes since last backup (full/incremental). Faster backup, smaller media per incremental. To restore requires multiple backup media.
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| 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.
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| Pins on memory: | Laptop:(DDR1+2= 200, DDR3= 204), Desktop:DDR2/3=240, DDR1=184
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| MXM | Mobile PCI Express Module, Graphics module in laptops, used for upgrade
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| Installing new wireless card into a new laptop what type? | Mini PCI
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| Cause of screen flickering or very dark laptop monitor | Inverter or CCFL
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| What parts of laptop better for technician to replace? | CPU, motherboard, anything hard to get to.
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| Purpose of function key, what can it do? | Activates secondary ability of a key. Brightness, volume, wireless, monitor select...
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| Components that can fit into a system but may not be compatible? | RAM, CPU
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| Error messages when system files are missing | ntldr loader is missing / booting to safe mode = change boot.ini
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| Coarse Screws used in: | case, expansion slots, HD
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| Fine thread screws used in: | optical+floppy
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| Virus types | Worms, Rootkit, Boot Sector, Trojan, Malware, keylogger, phishing.
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| Firewall vs. Network intrusion software? | Firewall = active, Network Intrusion = passive
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| Why uncheck hide known file extensions? | masked programs (security)
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| When physically setting up a server what should you be concerned with? | security, UPS, properly grounded, cooled
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| 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.
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| Why would you deliberately delete CMOS data? | clear BIOS password
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| SATA uses master/slave? | false
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| 80 pin IDE cables/color uses | Blue: motherboard, Grey: slave, Black: master
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| Main motherboard power connector name/pins? | P1 / Main ATX - 24
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| Pins: SATA | 15
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| Backwards floppy connector? | light stays on all the time...also won't work
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| Tailgating? | getting through a security door someone else opens
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| System files corrupt! What to do? | Recovery console from windows DVD
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| Low level problems in a bricked system? | take off non mandatory items?
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| Mandatory items to start a computer? | CPU, power, video card, memory, motherboard
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| Power connector for a floppy drive? | Berg (4 pin)
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| What can be done to limit hardware/software problem downtime? | Backup systems, hot swaps, images, replacement hardware
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| What is software like deepfreeze used for? | All changes made to computer are wiped on reset
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| Physical computer security? | lock usb(ports), lock computer to desk, multifactor ID (fingerprint+password+whatevs)
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| Form factors of motherboards? | At, Baby AT, ATX, Micro-ATX, Mini-ITX, NLX, BTX/Micro-BTX
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| 137 gig limitation/solution? | Old ATA protocol, 28 address bits to specify sectors. New 32 bit address can take 256 TB.
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Datheral
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