Difference between revisions of "Review Questions for Test 1"
(→The easiest way to recover the root password for GNU/LINUX in case we lost it, is) |
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* boot loader | * boot loader | ||
* none of above | * none of above | ||
+ | |||
+ | === The easiest way to recover the root password for GNU/LINUX in case we lost it, is === | ||
+ | |||
+ | * open the /etc/passwd file in vi editor & look for root password | ||
+ | * boot the computer form CD/DVD in run level 5 and run the passwd command | ||
+ | * boot the computer with MS-Linux Xp/Vista Live CD then click Start->Control Panel->Change MSlinux Password option. | ||
+ | * '''boot the system in single user mode & change the root password with /usr/bin/passwd command ''' |
Latest revision as of 22:48, 15 October 2008
Contents
- 1 What command will list all partitions on all hard drives?
- 2 what is wrong with this statement?
- 3 Which directory usually contains the GNU/Linux boot files?
- 4 The user password are stored in which file?
- 5 Grub is a boot loader. It is used to load Linux kernel & driver module files in to memory by reading the configuration file. The name and path of GRUB configuration file is
- 6 resize2fs command is used ?
- 7 The Name and path of the linux kernel is
- 8 Linux need at least two minimum partitions for installation named
- 9 File system must requires a container. The container may be
- 10 To mount a new file system permanently, so that it is available automatically across the rebooting,a entry is required to made in a file, The name of the file is
- 11 What is the purpose of the sudo command?
- 12 What command would you use to set the maximum mount count of the file system to 100?
- 13 There is one line "#chkconfig: 3 92 08" in your script file. Its name is carpal and it is saved in /etc/init.d/ directory. When you execute the command "chkconfig --add carpal", What will happen?
- 14 Different Linux distributions uses different tools to install a package. Which one of following statements is true ?
- 15 How to unpack the file "linux-2.6.26.tar.bz2"?
- 16 How to compile kernel and modules?
- 17 How to create a initial ram disk image?
- 18 What is a daemon?
- 19 What's the default run-level in Fedora ?
- 20 Which command can reboot the system?
- 21 Circle one, which is true for findfs command ?
- 22 Arrange them in proper order, going first process to last process
- 23 The file system structure in GNU/Linux is like a inverted tree. The top of this inverted tree is started from
- 24 What is the command to label as "videogames" the filesystem in the device /dev/bdisk ?
- 25 What is the device represented in the file grub.conf as (hd0,0) ?
- 26 What is the device represented in the file grub.conf as (hd1,0) ?
- 27 What is the device represented in the file grub.conf as (hd1,1) ?
- 28 What is the device represented in the file grub.conf as (hd0,2) ?
- 29 pvcreate command is used for ?
- 30 _____ command is used to scan all the disks for volume groups and rebuild caches
- 31 When is a good time to use the "partprobe" command ?
- 32 What does the command "partprobe" do ?
- 33 Which command can be used to fill your hard drive with 0s ?
- 34 Which linux command can be used to make a image ?
- 35 What does the command losetup do ?
- 36 The Operating system on our computers, we usually call it Linux. But Linux is actually a name for
- 37 The easiest way to recover the root password for GNU/LINUX in case we lost it, is
What command will list all partitions on all hard drives?
- fdisk
- fdisk -l
- partprobe
- FDISK
what is wrong with this statement?
dd if=/dev/zero of=/tmp/mytest.img bs-1024 count-10000
- wrong of file type
- cannot have zeroes in an img file
- typing error
- if and of in the wrong order
Which directory usually contains the GNU/Linux boot files?
- /
- /root
- /boot
- /home directory of user who is booting the system
The user password are stored in which file?
- /etc/passwd
- /etc/shadow
- /etc/password
- none of above
Grub is a boot loader. It is used to load Linux kernel & driver module files in to memory by reading the configuration file. The name and path of GRUB configuration file is
- /etc/grub/grub.conf
- /root/grub.conf
- /etc/grub.conf
- /boot/grub.conf
resize2fs command is used ?
- to enlarge or shrink the size of partitions on harddisks
- to change the physical volumes (PVs)
- to enlarge or shrink the size of Logical Volumes (LVM)
- to enlarge or shrink the ext2 and ext3 file systems
The Name and path of the linux kernel is
- /boot/vmlinux.2.6.25.14-108.fc9.i686
- /boot/initrd.2.6.25.14-108.fc9.i686
- /boot/Linus.torvalds.2.6.25.14-108.fc9.i686
- /boot/vmlinuz-2.6.26.3-29.fc9.i686
Linux need at least two minimum partitions for installation named
- /root & swap
- /root & /boot
- / & swap
- /root & /red knot
File system must requires a container. The container may be
- Disk Partition
- File
- Logical volume (LVM)
- All of above
To mount a new file system permanently, so that it is available automatically across the rebooting,a entry is required to made in a file, The name of the file is
- /etc/inittab
- /etc/fstab
- /boot/grub/grub.conf
- /etc/automounttab
What is the purpose of the sudo command?
- to allow a permitted user to execute ftp
- to start the Suse linux kernel
- to allow a permitted user to execute a command as the superuser or another user
- to switch to the root user
What command would you use to set the maximum mount count of the file system to 100?
- tune2fs /dev/sda7 -c 100
- tune2fs /dev/sda2 -m 100
- resize2fs /dev/sda3 -c 100
- resize2fs /dev/sda5 -m 100
There is one line "#chkconfig: 3 92 08" in your script file. Its name is carpal and it is saved in /etc/init.d/ directory. When you execute the command "chkconfig --add carpal", What will happen?
- to produce links: "/etc/rc5.d/S92carpal" and "/etc/rc3.d/K08carpal"
- to produce links: "/etc/rc5.d/S92carpal" and "/etc/rc0.d/K08carpal"
- to produce links: "/etc/rc3.d/S92carpal" and "/etc/rc0.d/S08carpal"
- to produce links: "/etc/rc3.d/S92carpal" and "/etc/rc0.d/K08carpal"
Different Linux distributions uses different tools to install a package. Which one of following statements is true ?
- Ubuntu uses apt-get, Opensuse uses zypper and Fedora uses yum or pkcon
- Ubuntu uses pkcon or zypper, Opensuse uses yum and Fedora apt-get
- Ubuntu uses zypper, Opensuse uses apt-get and Fedora uses yum or pkcon
- Ubuntu uses yum, Opensuse uses pkcon and Fedora uses yum or apt-get
How to unpack the file "linux-2.6.26.tar.bz2"?
- tar cvjf linux-2.6.26.tar.bz2
- tar xvjf linux-2.6.26.tar.bz2
- tar tvjf linux-2.6.26.tar.bz2
- gunzip linux-2.6.26.tar.bz2|tar cvf -
How to compile kernel and modules?
- make oldconfig
- make
- make modules
- rpmdev-setuptree
- make modules_install
How to create a initial ram disk image?
- initrd (hd1,0)/initrd-2.6.26.5-45.fc9.i686.img
- initrd /initrd-2.6.26.5-45.fc9.i686.img
- mkinitrd -k vmlinuz-2.6.26 -i initrd-2.6.26
- mkinitrd (hd1,0)/initrd-2.6.26.5-45.fc9.i686.img
What is a daemon?
- Just a process to stop another program
- A software process that runs in the background and provides the service to client upon request
- A process that runs one time. Once done it will stop
- A process that prevents multiple occurances from running at one time
What's the default run-level in Fedora ?
- 1
- 2
- 3
- 4
- 5
- 7
Which command can reboot the system?
- init 0
- init 2
- init 4
- init 6
- telinit 6
- reboot
Circle one, which is true for findfs command ?
- find a filesystem by label or UUID
- find a filesystem by label and UUID
- find a filesystem by UUID
- none of the above
Arrange them in proper order, going first process to last process
- A) kernel loads the needed kernel modules
- B) init program
- C) GRUB
- D) ROM BIOS loads loader from MBR
- E) loader finds and loads linux kernel and initial ram disk
D C E A B
The file system structure in GNU/Linux is like a inverted tree. The top of this inverted tree is started from
- /root
- /
- /etc/root
- /boot
option two (2) / is correct
What is the command to label as "videogames" the filesystem in the device /dev/bdisk ?
- resize2fs /dev/bdisk videogames
- fdisk /dev/bdisk videogames
- e2label /dev/bdisk "videogames"
- resize2fs /dev/bdisk videogames
- e2label /dev/bdisk videogames
What is the device represented in the file grub.conf as (hd0,0) ?
- /dev/hda3
- /dev/sdc2
- /dev/hda2
- /dev/sda1
- /dev/sdd2
- /dev/sda2
- /dev/sdb1
What is the device represented in the file grub.conf as (hd1,0) ?
- /dev/hda3
- /dev/sdd2
- /dev/hda2
- /dev/sdc2
- /dev/sda1
- /dev/sda2
- /dev/sdb1
What is the device represented in the file grub.conf as (hd1,1) ?
- /dev/sdb2
- /dev/hda2
- /dev/sdd2
- /dev/sda1
- /dev/sdc2
- /dev/sda2
- /dev/sdb1
What is the device represented in the file grub.conf as (hd0,2) ?
- /dev/hda3
- /dev/hda2
- /dev/sda2
- /dev/sda3
- /dev/sdb1
- /dev/sdc2
- /dev/sdd2
pvcreate command is used for ?
- Initialize a disk or partition for use by LVM
- Creating a LVM
- Scanning a LVM
- none of above
_____ command is used to scan all the disks for volume groups and rebuild caches
- vgchange
- lvcreate
- vgscan
- lvm
When is a good time to use the "partprobe" command ?
- After creating, deleting or modifying partitions
- After reboot the system
- Sometimes
- In a sunny day
What does the command "partprobe" do ?
- Query a database
- Query the kernel version
- Look for modifications in the partitions of the system and then if something was modified, load the new informations in to the kernel
- Look for new partitions
Which command can be used to fill your hard drive with 0s ?
- dd if=/dev/zero of=/dev/sda bs=1M
- ff
- e2fs
- fdisk
Which linux command can be used to make a image ?
- dd
- mkisofs
- dd if=/dev/random of=/dev/device
- mkimage
What does the command losetup do ?
- It associates a file to a device (Ex:losetup /dev/loop0 fakedisk)
- nothing
- reboot the computer
- It erases the setup (lose setup)
The Operating system on our computers, we usually call it Linux. But Linux is actually a name for
- Operating System
- Kernel
- boot loader
- none of above
The easiest way to recover the root password for GNU/LINUX in case we lost it, is
- open the /etc/passwd file in vi editor & look for root password
- boot the computer form CD/DVD in run level 5 and run the passwd command
- boot the computer with MS-Linux Xp/Vista Live CD then click Start->Control Panel->Change MSlinux Password option.
- boot the system in single user mode & change the root password with /usr/bin/passwd command