Course 1 Week 3 Boot Process, Boot Methods, Mobile OS

Question 1

What do you call starting up a computer?

Answer 1

Boot

(pull up bootstraps)

Question 2

What is the boot process? 7 steps

Answer 2

1. Power on
2. BIOS/UEFI (initializes hardware, checks good to go)
3. POST (diagnostic tests, everything works OK)
4. BIOS/UEFI boot device selected (HD, USB, CD D)
5. PC finds the bootloader in a boot device, loads OS
6. Kernel gets loaded (resources, driver)
7. Essential system processes and user space loaded (log in)

Question 3

How are bootloaders programs configured?

Answer 3

In a boot order

boot devices are checked in this order

Question 4

What is UEFI?

Answer 4

Unified Extensible Firmware Interface

Question 5

What is an internal boot method?

Answer 5

creating partitions (separate unit) on a hard drive so only one part of the drive runs the boot process

Question 6

What’s a common reason to partition your drive?

Answer 6

To have 2 separate OS on PC, like Windows and Linux.

Question 7

What is dual booting?

Answer 7

Having two possible OS to boot into

(must choose one to run boot process)

Question 8

Why would partitioning your drive be helpful?

Answer 8

When one OS is failing or unable to boot

Question 9

What is an external boot method? Why is it helpful?

Answer 9

Load the needed resources on an external tool

to boot a system before problems happen

Question 10

What are 6 examples of external bootable devices?

Answer 10

1. USB Drive
2. Optical Media
3. Solid State Boot Drive
4. External hot-swappable drive
5. Network-boot (LAN required)
6. Internet-based boot

Question 11

How to initiate boot process with an external tool? 2 steps

Answer 11

(Windows OS or Linux OS)
1. Enter BIOS/UEFI at startup F2/F12/Del keys
2. Change boot order to external tool as first option

Question 12

How do you boot macOS on an external tool? 2 steps

Answer 12

1. Press and hold Option key at startup which opens Startup Manager
2. Choose bootable device

Question 13

How do you boot from a network?

Answer 13

Setup Preboot Execution Environment (PXE) on the BIOS

Question 14

Do you need a storage device when booting from a Network?

Answer 14

No

Question 15

How is internet-based boot achieved with Remote Access? 2 steps

Answer 15

1. With Remote Access Controller (IPMI or similar) enabled on BIOS
2. computer needs to have a Remote access control device such as IDRAC

Question 16

How is internet-based boot achieved with WoL? 3 steps. What is WoL?

Answer 16

WoL = Wake on LAN

1. WoL option enabled on BIOS
2. WoL instruction comes from a device in network or use WoL gateway
3. Network card should have WoL capability

Question 17

Where does the OS for general purpose mobile devices come from?

Answer 17

Derived from other OS

Linux —> Android
macOS —> iOS

Question 18

How are mobile OS different from the OS they’re based on? 2 answers

Answer 18

1. Mobile devices run on rechargeable/replaceable batteries that should last as long as possible between charges
2. Optimized to use as little power as possible by removing OS features and applications mobile doesn’t need

Question 19

How do we interact differently with mobile devices? 3

Answer 19

1. Motion
2. Touch
3. Voice

Question 20

Does a mobile OS have its own drivers and support?

Answer 20

Yes

Question 21

What are 3 examples of some specialized mobile devices? How are these different from general purpose?

Answer 21

1. E-Readers
2. Fitness Trackers
3. GPS devices

Have custom OS, slimmed down, specialized chips and peripherals