BÀI TẬP TRẮC NGIỆM TIẾNG ANH MÔN HỆ ĐIỀU HÀNH LINUX_1 docx

BÀI TẬP TRẮC NGIỆM TIẾNG ANH MÔN HỆ ĐIỀU
HÀNH LINUX- TRƯỜNG CD CÔNG NGỆ THÔNG TIN
Chuyên ngành: Công nghệ phần mềm
Năm học: 2010-2011

1.What is the most popular file system choice?
A. ext2
B. bsdf
C. jfs
D. ext3
Answer: A
2.What steps need to be performed, to make a new disk accessible to
users? Select three.
A. fdisk
B. mkfs
C. mount
D. stat
E. quotaon
Answer: A, B, C
3.Which THREE of the following commands are used when setting up
and accessing a new filesystem on the hard drive?
A. fsck
B. mkfs
C. mount
D. fdisk
E. format
Answer: B, C D
4.The command mkfs -t ext3 /dev/hdb1 -T largefile creates what size of
inode?
A. 4 kilobyte
B. 1 megabyte

C. 2 megabyte
D. 4 megabyte
Answer: B
5.Which command will show the number of free and used inodes for
your system's
mounted file systems?
A. du -i
B. df -i
C. ls -iR /
D. freeinodes
Answer: B
6.How many inodes are assigned to a file when it is created?
A. 1
B. 2
C. 4
D. 8
Answer: A


7.What command with switches will display the disk utilization for all
mounted file
systems?
A. df
B. vmstat
C. du
D. top
E. free
Answer: A
8.What command with options will show the currently mounted
filesystems usage in kilobytes?

A. df -k
B. df -h
C. du -k
D. du -h
E. du -s
Answer: A
9.Which of the following commands will print the inode usage on each
mounted filesystem?
A. du -i
B. df -i
C. lsfs -i
D. printfs -i
Answer: B
10.You need to create a symbolic link in the current user's home
directory named
Certkiller to the file /data/foobar. Choose the command that will
accomplish this.
A. link . Certkiller /data/foobar
B. ln /data/foobar $HOME/ Certkiller
C. ln -s /data/foobar ~/ Certkiller
D. file link ./ Certkiller /data/foobar
E. None of the above
Answer: C
11.Which chown command will change the ownership to foo and the
group to bar on a file named biglist?
A. chown foo/bar biglist
B. chown -u foo -g bar biglist
C. chown foo:bar biglist
D. chown user foo group bar biglist
Answer: C

12.You have the following file: -rwxrwxr-x 1 foo root 0 Feb 23 07:48
/bin/foo Which of the following commands will change the owner of
the file /bin/foofrom the
foo userto the bar user without affecting group ownership?
A. chown /bin/foo bar
B. chown bar /bin/foo
C. chown bar.foo /bin/foo
D. chown.foo.bar /bin/foo Answer: B
13.Which of the following commands makes /bin/foo executable by
everyone but only
writable by its owner?
A. chmod 557 /bin/foo
B. chmod o +rwx, a+rx /bin/foo
C. chown 557 /bin/foo
D. chmod 755 /bin/foo
Answer: D
14.You need to alter the permissions on the directory /home/mrbill and
all it's contents to match the following permissions. drwxr r Which of
these commands with options and arguments will accomplish this?
Choose two.
A. chmod 0744 /home/mrbill -R
B. chmod 744 /home/mrbill/*
C. chmod -R u=rwx,g=r,o=r /home/mrbill
D. chmod u+rwx,g+r,o+r /home/mrbill
Answer: A, C
15.What umask will set the file permissions on a newly created file to -
rw-r r (644)?
A. 0002
B. 0022
C. 0224

D. 0246
Answer: B
16.You want the default permissions for your files to be -rw-r .HOW
must you set umask?
A. 037
B. 640
C. 038
D. 027
Answer: A
17.After creating a new file, you notice that the permissions of the new
file are -rw-rw-rw From this, you know that the value of the umask is
what?
A. 023
B. 000
C. 112
D. d111
E. 223
Answer: B
18.What are the default permissions for the Red Hat /etc/passwd file?
A. 644
B. 640
C. 400
D. 641
E. 440 Answer: A
19.Which of the following are required in the /etc/passwd file when
creating a user account? (Choose all that apply)
A. login name
B. userid
C. default group
D. password age

E. minimum password length
Answer: A, B, C
20.Which file contains information about filesystems and their
respective mount
points?
A. /etc/mount
B. /etc/fs_mount
C. /etc/fstab
D. /proc/fstab
Answer: C
21.Which of the following programs can be used to the find the foo
program in the.PATH and associated man pages, but not list every file
containing foo on the system?
A. which
B. search
C. slocate
D. where
E. whereis
Answer: E
22.What command can be used to cause changes to the inittab file to
take effect without a system reboot?
A. init q
B. init r
C. inittab r
D. inittab q
Answer: A
23. Which of the following is a journaling filesystem?
A. ext2 B. vfat C. minix D. ext3
Answer: D
24. The first ethernet card on a system is:

A. eth0 B. etho0 C. eth1 D. hme0
Answer: A
25. You can find all of the services managed by xinetd by looking at
which of the following file or directory?
A. /etc/xinetd.d B. /etc/inetd.conf C. /etc/rc.d/init.d D.
/etc/xinetd.conf
Answer: A
26.What partition number always refers to the first logical partition?
A. 0 B. 4 C. 1 D. 5
Answer: D
27.Which of the following files specifies information on what is NFS
shared on your system?
A. /etc/exports B. /etc/dfs/dfstab C. /etc/fstab D. /etc/sharetab
Answer: A
28. What command could be used to find out which package owns the
file /etc/aliases?
A. rpm -qf /etc/aliases B. rpm -qp /etc/aliases C. rpm -e
/etc/aliases D. rpm -qil /etc/aliases
Answer: A
29. Which of these commands will list PCI devices?
A. lsdevices B. lspci C. lsdev D. pcidev
Answer: B
30. What command could be used to find all packages with the string
'mail' within the package name?
A. find / -name '*mail*' B. rpm -qf /usr/bin/mail
C. rpm -qa | grep mail D. locate mail
Answer: C
31. On a system with 16MB RAM, the minimum size of your swap
partition should be equal to how many MBs?
A. 16 B. 32 C. 64 D. 100

Answer: B
32. On a new Linux installation, the partition mounted on where
contains the operating system kernel?
A. /boot B. /dev C. /kernel D. /bin
Answer: A
33. A Linux server installation requires how many GB of free space for a
minimal installation where no graphical display is ever needed?
A. 0.8 B. 0.5 C. 1.1 D. 1.5
Answer: D
34. When init starts, it first runs which of the following scripts?
A. /etc/rc.d/rc.sysinit B. /etc/rc.d/rc.sysinit0 C.
/etc/rc.d/rc.sysinit1 D. /etc/rc.d/sysinit0
Answer: A
35. What file contains the default environment variables when using
the bash shell?
A. ~/.profile B. /bash C. /etc/profile D. ~/bash
Answer: C

36. What is the usual mode for the /tmp directory?
A. 0777 B. 0755 C. 7777 D. 1777
Answer: D
37. The netstat –r command produces the following output:
192.168.10.0 * 255.255.255.0 U 40 0 0 eth1
Which of the following best describes this line?
A. 192.168.10.0 IS A Gateway (G) to all external networks.
B. the host, 192.168.10.0, is currently up (U).
C. There are currently 40 packets waiting for transmission over this
route.
D. The network, 192.168.10, is accessible through the local NIC
configured as eth1.

Answer: A
38. All of the following commands can be used to determine open TCP
ports an localhost EXCEPT: A. lsof B. netstat C. nmap D.
fuser E. ifconfig
Answer: E
39. How would you display your system’s current ARP cache?
A. arp –a B. netstat –a C. netstat –arp D. cat /ect/arp
Answer: A
40. Your organization has opened a new office on a different floor, and
the computers that
will be installed there will be on a new network, 192.168.1.0/24. A
Linux gateway having
the address 192.168.0.2 on your local network will route traffic
between the two subnets.
Which invocation of the ‘route’ command will properly reconfigure
your firewall
(address 192.168.0.1) so that it can communicate with the new subnet?
A. route add 192.168.1.0/24 192.168.0.2
B. route add .net 192.168.1.0 netmask 255.255.255.0 gw 192.168.0.2
C. route add 192.168.1.0 netmask 24 gw 192.168.0.2
D. route add –net 192.168.1.0/24 192.168.0.2/32
E. route add 192.168.1.0/255.255.255.0 gw 192.168.0.2
Answer: E
41. You have created special configuration files that you want copied to
each user’s home directories when creating a new user accounts. You
copy the files to /etc/skel. Which of the following commands will make
this happen?
A. useradd –m username B. useradd –mk username
C. useradd –k username D. useradd –Dk username
Answer: B

41. You have entered the following cronjob. When will it run? 15 * * *
1. 3. 5 myscript
A. At 15 minutes after every hour on the 1st, 3rd and 5th of each
month.
B. At 1:15 am, 3:15 am, and 5:15 am every day.
C. At 3:pm on the 1st, 3rd, and 5th of each month.
D. At 15 minutes after every hour every Monday, Wednesday, and
Friday.
Answer: D

42. You need to search the entire directory structure to locate a specific
file. How could you
do this and still be able to run other commands while the find
command is still searching for
you file?
A. find / -name filename & B. find / -name filename
C. bg find / -name filename D. &find / -name filename &
Answer: A
43. To allow a user to mount a CD and read from it, which entry should
be put into /etc/fstab?
A. /dev/cdrom /mnt/cdrom iso9660 noauto,usermap,ro 0 0
B. /dev/cdrom /mnt/cdrom iso9660 noauto,uid=user,gid=group,ro 0 0
C. /dev/cdrom /mnt/cdrom iso9660 noauto,User,ro 0 0
D. /dev/cdrom /mnt/cdrom iso9660 noauto,user,ro 0 0
Answer: D
44. You have to mount the /data filesystem from an NFS server (srv 1)
that does not support
locking. Which of the following mount commands should you use?
A. mount –a –t nfs B. mount –o locking=off
srv1:/data /mnt/data

C. mount –o nolock srv1:/data /mnt/data D. mount –o
nolock/data@srv1 /mn/data
Answer: C
45. You want to check what shares are offered by a Windows system.
Which of the following commands could you use to perform this task?
A. mmblookup B. showshares C. smbclient D. smbstatus
E. listshares
Answer: C
46. How can you determine who has scheduled at jobs?
A. at –l B. at –q C. at –d D. atwho
Answer: A
47. Using command substitution, how would you display the value of
the present working directory?
A. echo $(pwd) B. echo pwd C. $pwd D. pwd | echo
Answer: A
48. Which of the following environment variables determines your
working directory at the completion of a successful login?
A. HOME B. BASH_ENV C. PWD D. BLENDERDIR
Answer: A
49. Which of the following daemons must be running on an NFS server?
A. portmap B. nfsiod C. nfsd D. xinetd E. mountd
Answer: AC
50. Which process had the Process ID number 1?
A. bash B. kernel C. init D. none
Answer: C
51. You issue the command jobs and receive the following output:
[1]- Stopped (tty output) pine
[2]+ Stopped (tty output) MyScript
How would you bring the MyScript process to the foreground?
A. fg %2 B. ctrl-c C. fg MyScript D. ctrl-z

Answer: A
52. On a system with separate partitions for /, /usr, /var, /tmp which
filesystem[s] can safely be mounted read-only?
A. /var, /usr B. /var C. /usr, /, /tmp D. /usr E. /tmp
Answer: D
53. What file will show you the IRQs being used by different hardware
devices?
A. /proc/interrupts B. /proc/irqs C. /proc/irq D. /proc/int
E. /proc/ints
Answer: A
54. What is wrong with the following command? tar cvfb //dev/tape 20
A. You cannot sue the c option with the b option.
B. The correct like should be tar –cvfb /dev/tape20.
C. The arguments are not in the same order as the corresponding
modifiers.
D. The files to be backed up have not been specified.
Answer: C
55. How would you find out the version of the kernel in /usr/src/linux?
A. cat /usr/src/linux/.version B. cat /usr/src/linux/VERSION
C. Look in the README D. head –4 /usr/src/linux/Makefile
Answer: D
56. On a running system, where can you find specific information about
the partition tables, such as major and minor device numbers, and
number of blocks?
A. /proc/partitions B. /proc/cpuinfo C. /proc/fstab D.
/etc/partitions E. etc/fstab
Answer: A
57.What option is used with the useradd command to specify the user's
home directory?
A. -d

B. -h
C. -u
D. -a
Answer: A
58.What switch is used with the usermod command to change a user's
secondary groups?
A. -G
B. -group
C. -d
D. -U
Answer: A
59.Which of the following are required in the /etc/passwd file when
creating a user account? (Choose all
that apply)
A. login name
B. userid
C. default group
D. password age
E. minimum password length
Answer: A, B, C
60.What run level represents basic multi-user?
A. 2
B. 0
C. 1
D. 5
Answer: A
61.What run level represents multi-user?
A. 3
B. 0
C. 1

D. 5
Answer: A
62.Which of the following switches can be used with the tar command
to find out the difference between
two tar files?
A. -c
B. -v
C. -d
D. –t Answer: C
63.You want to add files to a previously created tar file. You want to
replace existing files with newer
files, how can you do this?
A. Use the append command
B. Use the tar command with the -t s
D. Use the tar command with the -u switch
Answer: D
64.You had a contractor come into your company. You originally set his
account to expire after thirty
days. You now need to change this. How can you do this?
A. usermod -e
B. usermod -a
C. usermod -x
D. usermod -d
Answer: A
65.You want to add information to a previously created tar file. How
would you do this?
A. Use the tar command with the -a switch
B. Use the append command
C. Use the add command
D. Use the tar command with the -r switch

Answer: D

67.What option is used with the useradd command to specify the user's
user id?
A. -u
B. -s
C. -ui
D. -id
Answer: A