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Mod 8 Day 3 > Mod 8 Day 3 > Flashcards

Mod 8 Day 3 Flashcards

1
Q

Conventional default file systems used by Common OS’s

A

Linux

Solaris

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2
Q

Common network-based file systems

A

NFS Network file system

SMB server message block

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3
Q

Contains the basic Tools and utilities sufficient to keep the system going. Included are /boot /bin /sbin /etc /dev and /tmp

A

Root file system

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4
Q

Provides the kernel with a location to move processes out of memory when the system is under a heavy memory load (swapping)

A

Swap file system

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5
Q

On a Linux system this views the disks physical partitioning scheme

A

fdisk -l

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6
Q

Command for both Solaris and Linux that reveals all nix file systems their DISK SPACE usage and they’re logical mount points in blocks

A

df -k

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7
Q

An Ext ____________ is located 1024 bytes from the start of the file system, is 1024 bytes in size and contains the following information:
Total number of inodes
Total number of blocks
Block size
Number of blocks per block group
Number of inodes per block group
Number of reserved blocks before the first block group

A

Superblock

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8
Q

This command is for both Solaris and Linux, and it prints the super block and block group information for the file system

A

dumpe2fs

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9
Q

The _______ __________ _______ comes immediately after the Super block. This table describes each block groups layout.
Starting block address of the block bitmap
Starting block address of the inode bitmap
Starting block address of inode table
Number of unallocated blocks in the group
Number of unallocated inodes in the group
Number of directories in the group
Unused bytes

A

Group descriptor table

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10
Q 
The file system is organized into \_\_\_\_\_ \_\_\_\_\_\_\_ containing a super Block in a group descriptor table describing the block group layout. It contains the following:
Super block
Group descriptor table
Block bitmap
Inode bitmap
Inode table
Blocks containing file data
A

Block group

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11
Q

This is the basic file allocation unit for ExtX it is used to store file content, and it’s sizes are defined in the super block. These are a group of consecutive sectors and can be 1024 bytes, 2048 bytes, or 4096 bytes.

A

Block

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12
Q

The metadata for each file in directory is stored in a data structure called an ______, these contain information processes needed to access a file

A

Inodes

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13
Q

The allocation status of an inode is determined using the?

A

Inode btmap

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14
Q

The inode ______ __ ______ list the blocks on the disc where the data is stored

A

Table of contents

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15
Q

What three times stamps does the Ext3 system support?

A

Modification
Access
Change

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16
Q

This command Works in Linux and is used to view file or file system status to include timestamps

A

Stat

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17
Q

This command is used in both Linux and Solaris and creates an empty file and can also alter timestamps

The modification and Access times are changed with what to options

A

Touch

-m -a

18
Q

This is a simple data structure containing filename and inode address where the files metadata can be found. It also contains a pointer to the next entry, and maps file name to directory

A

Directory entry

19
Q

A pointer to a files inode, thought of as the same as the original

A

Hard link

20
Q

A file containing a path name of another file, it’s like a pointer to the files NAME and does not increase.

A

Symbolic link

21
Q

What device name is used to access disk devices when performing any of the following:
Add a new disk to the system
Move a disc from system to system
Backups
Mount or access a file system on a local disk
Repair a file system

A

Logical

22
Q

This command with no options displays a list of mounted file systems with proper options and permissions it can map a logical device name to a file system.

A

Mount

23
Q

What are your two key file types

A

Regular and special

24
Q

What are your two categories in a regular file type

A

Text in binary

25
Q

This command Works in both Linux and Solaris it identifies file type by probing each object with three types of tests until one succeeds

A

File

26
Q

What are the three classes of users for file permissions, and what characters are used to represent each

A

Owner group and other

U G. O

27
Q

This command Works in both Solaris and Linux and it modifies the default settings, and with no options displays the current value

A

umask

28
Q

Permissions for files and directories are set with what command? This also works for both Solaris and Linux

A

chmod

29
Q

This command Works in both Solaris and Linux it’s used for changing user and or group ownership of a file.

A

chown

30
Q

This bit allows anyone to run a program (executable) with the same privileges as its owner or group

A

SUID/SGID

31
Q

A variable and its value is displayed using what command

A

echo $PATH

32
Q

There are two types of variables one being local and one being global what are they?

A

Shell and environmental

33
Q

This command Works in both Solaris and Linux and displays existing shell variables environmental variables and shell functions

A

Set

34
Q

After a variable is created running this command followed by the variable name will allow child processes to access the variable

A

Export

35
Q

These are available in all shells including bourne (sh), Bourne again (bash), and c shell

A

Environmental variables

36
Q

This command Works in both Solaris and Linux and displays only existing environmental variables

A

env

37
Q

As an alternative to rebooting Bash’s ______ command is used to read an execute the update script for the current shell only

A

Source

38
Q

There are two ways of invoking Bash the first requires System Authentication. The second way requires no additional System Authentication

A

Login and non login

39
Q

To determine if the current shell is a login or non login what command is used

A

Echo $0

40
Q

Solaris and Linux use what type of shell to prevent unauthorized users from obtaining shell access

A

Nologin

41
Q

This type of shell is part of the SSH Suite and can be configured to specifically restrict a user to use SCP or SFTP

A

Restricted secure shell rssh

42
Q

This is a Linux command that automatically updates the /etc/passwd file with the changed shell

A

chsh

Mod 8 Day 3 (1 decks)

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