Day 6

Question 1

What are the 5 system layers?

Answer 1

Physical layer
File system layer
Data layer
Metadata layer 
Filename layer

Question 2

The ____ is located on the first sector of the bootable disk drive.

Answer 2

Master boot record

Question 3

The ____ defines the usable blocks on the disk and the number and size of the partition entries that make up the GUID partition table.

Answer 3

GPT header

Question 4

Concerning the layers of a file system, the ____ layer contains data that describes the file system structural details such as file allocation unit sizes, structure offsets, and mounting information.

Answer 4

File System layer

Question 5

Loading the second stage boot loader is the primary function of the ________.

Answer 5

First stage boot loader

Question 6

______ is a valid magic number that would indicate that the partition table should be read in Big Endian.

Answer 6

AA55

Question 7

State the Linux design layers from start to finish:

Answer 7

1) User applications
2) GNU C libraries
3) System Call interface
4) Kernel
5) Architecture-dependent Code
6) Hardware

Question 8

A(n) ________ groups sectors into addressable clusters to be used by the file system for the storage of data.

Answer 8

High level format

Question 9

(Choose all that apply) Which pf the following are contents of a MBR’s partition table?
Starting sector of the partition
The magic number
Partition size
Partition type, identifying the file system.

Answer 9

Starting sector of the partition
Partition size
Partition type, identifying the file system.

Question 10

A _____ describes an exposed documented interface made available for accessing system resources in Windows.

Answer 10

Dynamic link library (DLL)

Question 11

Before a high level format can be performed, a ____ must be created.

Answer 11

Partition

Question 12

______ is the second stage bootloader in Windows Vista and newer.

Answer 12

BOOTMGR

Question 13

______ is performed by BIOS to check the status of essential hardware components during the boot process.

Answer 13

POST

Question 14

The ______ phase of the UEFI Boot process determines whether a MBR or GBT boot will be used.

Answer 14

Boot device selection

Question 15

A _______ is a file structure that uses a bit for each block/cluster to flag whether it is allocated or unallocated.

Answer 15

Bitmap

Question 16

The primary purpose of the Second Stage boot loader is to load the _____.

Answer 16

Kernel

Question 17

______ is the second stage bootloader in the newer versions of Linux.

Answer 17

GRUB

Question 18

(Choose all that apply) Concerning the first stage boot loader, which of the following are valid?
   Reads the partition table
   Is 2 bytes in size
   Uses 08 to identify as active 
   Contained within the MBR

Answer 18

Contained within the MBR

Reads the partition table

Question 19

______ includes a technology framework for building an application’s user interface in iOS.

Answer 19

Cocoa Touch

Question 20

The _____ layer of the file system is where file and directory data is stored.

Answer 20

Data layer

Question 21

What category of Windows callable functions do CreateProcess(), ExitProcess(), and WaitForSingleObject() fall in to?

Answer 21

Process Control

Question 22

A minimum of _____ partitions may be contained in a GPt partition array.

Answer 22

128

Question 23

What category of Windows callable functions do CreateFile(), ReadFile(), WriteFile(), and CloseHandle() fall in to?

Answer 23

File Manipulation

Question 24

____ primary partitions can be listed on the MBR’s partition table.

Answer 24

Four

Question 25

The ____ layer of the file system describes the file system.

Answer 25

File System

Question 26

What category of Linux system calls do open(), read(), write(), and close() fall in to?

Answer 26

File Manipulation

Question 27

What category of Linux system calls do ioctl() fall in to?

Answer 27

Device Manipulation

Question 28

(Choose all that apply) Which of the following are functions of a file system's bitmap? Identifies allocated clusters with a 0. Identifies allocated clusters with a 1. Identifies unallocated clusters with a 0. Identifies unallocated clusters with a 1.`

Answer 28

Identifies allocated clusters with a 1. | Identifies unallocated clusters with a 0.

Question 29

________ is used by the Linux kernel to interact with different hardware architectures.

Answer 29

Architecural Dependent Code aka Board support package or BSP

Question 30

Android programmers develop applications in the ______ programming language.

Answer 30

Java

Question 31

_______ are determined by the number of sectors grouped into block/clusters and represent the smallest amount of space a file can be saved to on a hard disk.

Answer 31

File allocation units

Question 32

Vendor provided bootloaders are stored as files in the ______ to be launched by the UEFI firmware.

Answer 32

EFI System Partition ESP

Question 33

A hex value of ______ indicates an inactive partition in the MBR partition table?

Answer 33

00

Question 34

What category of Windows callable functions do SetConsoleMode(), ReadConsole(), WriteConsole() fall in to?

Answer 34

Device Manipulation

Question 35

List the order for a typical process to make a request for a kernel service.

Answer 35

1) Process makes system call from user mode 2) System call invokes a software interrupt 3) Request handed off to system call handle 4) Access provided to the kernel service by returning a handle 5) Continued access to the kernel service without reverification.

Question 36

A _______ is used for continous access to a kernel service without the need for repeated verification.

Answer 36

Handle

Question 37

Files that are written to non-sequential blocks/clusters on a disk are _____.

Answer 37

Fragmented

Question 38

State the Windows design layers from start to finish.

Answer 38

1) User mode applications 2) Subsystem (API) 3) Native (API) 4) Executive 5) Kernel

Question 39

What category of Linux system calls do fork(), exit() and wait() fall in to?

Answer 39

Process Control

Question 40

A(n) _______ is a library of function used to invoke protected operating system services via system calls.

Answer 40

Application Programming Interface