Week 3 - Device Software Management

Question 1

What are 2 ways to get to the device manager? W

Answer 1

1. Run > dvmgmt.msc
2. Right Click This PC > Manage > Device Manager

Question 2

What is the plug n play system? What’s the first thing Windows does?

Answer 2

The plug n play system allows us to plug in hardware and have Windows automatically search for the driver for the device so you can use it

It immediately asks the new hardware for its Hardware ID

Question 3

What is a hardware ID? Assigned by who?

Answer 3

A special string of characters assigned to the hardware by the manufacturer/vendor

Question 4

How does Windows find the right driver for a device? 3

Answer 4

1. Searches local lists for well-known drivers
2. Searches Windows Update
3. The driver’s store

Question 5

Can hardware devices have more than one hardware ID assigned to it?

Answer 5

Yes, they’re sorted from most to least suitable for the device (to find the driver)

Question 6

In Linux, when a device is connected where is the device file created?

Answer 6

/dev

Question 7

What are character devices? Linux

Answer 7

Character devices transmit data character by character (like a mouse, keyboard, monitor, printer)

Question 8

In Linux, everything is considered a ___ even ___ ___ !

Answer 8

In Linux, everything is considered a file, even hardware devices

Question 9

What are block devices?

Answer 9

Block devices transmit data in blocks [unit of storage] (USB drives, hard drives, CD ROM)

(devices that can hold data)

Question 10

When you see /dev/sda what kind of device is this referring to?

Answer 10

mass storage devices like hard drives, memory sticks, etc

Question 11

Are device drivers stored in the /dev directory?

Answer 11

No, sometimes they’re part of the Linux kernel

Question 12

What does the Linux kernel do? Where is it located, what does it boss around? What type of package is it?

Answer 12

The kernel is software located in the memory that tells the central processing unit (CPU) what to do.
The Linux kernel is like a personal assistant for the hardware that relays messages and requests from users to the hardware.

Question 13

What is a kernel module? What can it do? L

Answer 13

A kernel module allows us to extend the functionality of the kernel without actually touching it
It can be installed the same way as software and act as a device driver for a specific device (for devices that don’t have built-in support in the kernel)

Question 14

Are all kernel modules drivers? L

Answer 14

No

Question 15

In Linux, devices attached to the computer are recognized as?

Answer 15

Device files

Question 16

What is a Pipe device on Linux?

Answer 16

Similar to character devices, but instead of output going to a monitor for example it goes to a process running on the Linux machine

Question 17

What are socket devices? Linux

Answer 17

Socket devices help multiple processes communicate with each other (similar to pipe devices)

Question 18

What is Udev? Linux. What type is it?

Answer 18

Udev is a device manager that automatically creates/removes a device file every time the device is connected/disconnected

Question 19

What are postscript printer description (PPD) files?

Answer 19

PPD files can be used as printer drivers

Question 20

What does Red Hat Linux use to manage printers from the command line?

Answer 20

CUPS

Question 21

What does CUPS stand for? What does it do?

Answer 21

Common Unix Printing System

manages printers from the command line in Red Hat Linux

Question 22

What kind of update is a Critical Update?

Answer 22

Non-security related critical bugs

Question 23

What are drivers? What type are they?

Answer 23

Software that controls the I/O of devices running on our computers

Question 24

What are the 4 security levels for Security Updates? W

Answer 24

1. Critical
2. Important
3. Moderate
4. Low

Question 25

What are definition updates for windows update?

Answer 25

they update the definition databases that detect malicious code, junk mail, phishing websites

Question 26

What are feature packs? W updates

Answer 26

Add new product functionality to system

Question 27

What are service packs? W updates

Answer 27

Groups hotfixes, security, critical, and general updates together

A service pack also may contain new fixes or design changes requested by customers.

Question 28

What do general windows updates target?

Answer 28

specific non critical issues

Question 29

What do update rollups group together? W

Answer 29

hotfixes and updates that target a specific area, such as a component or service

Question 30

For older versions of Windows, are updates turned on automatically?

Answer 30

No they must be configured to update automatically

Question 31

In Linux, what’s the OS? Compared to Windows = Windows 10

Answer 31

Linux OS is comprised of the kernel and other packages, so the kernel is what you need to update for security updates

Question 32

How is the kernel in Linux similar to a word processor?

Answer 32

Just like any other package

Question 33

How to update kernel and other packges? What to run first? L

Answer 33

first run sudo apt update

then run sudo apt full-upgrade

Question 34

How to check what kernel version you have? L

Answer 34

uname -r

Question 35

What are the 4 main jobs of the Linux kernel?

Answer 35

1. Memory management (memory used by what, where)
2. Process management (CPU process management)
3. Device drivers (interpreter for hardware)
4. System calls and security (request for service)

Question 36

What is the Linux distribution (Operating System) comprised of? 2

Answer 36

1. Linux kernel
2. Package management system

Question 37

What are 2 ways to update the Ubuntu distribution?

Answer 37

1. Update Manager GUI - checks automatically
2. apt - check for updates manually

sudo apt-get update
sudo apt-get upgrade