[更新されたのは2022年]Lpi 201-450問題準備には無料サンプルのPDF
2022年最新の認定サンプル問題201-450問題集と練習試験合格させます
質問 42
What should be done after updating the configuration file for syslogd in order to make the changes become effective? (Choose TWO correct answers.)
- A. No action is required, syslogd will notice the updated configuration file after a few minutes.
- B. Restart the syslogd service.
- C. Run the command syslogd -u.
- D. Send the HUP signal to the syslogd process.
正解: B,D
質問 43
Which /etc/hosts.allow entries will permit access to sshd for users from the 192.168.1.0/24 subnet? (Choose TWO correct answers.)
- A. sshd : 192.168.1.0
- B. sshd : 192.168.1.
- C. sshd : 192.168.1.0 netmask 255.255.255.0
- D. sshd : 192.168.1
- E. sshd : 192.168.1.0/255.255.255.0
正解: B,E
質問 44
Which option to the update-rc.d command will cause the removal of all symlinks to
/etc/rcX.d/*test2 even when the script /etc/init.d/test2 still exists?
- A. -n
- B. -f
- C. -r
- D. -d
正解: B
質問 45
Which two LVM commands are missing from the following sequence which is used to create a logical volume and make use of it on a Linux system?
pvcreate, ___________, __________, mkfs, mount
- A. lvmcreate, vgcreate
- B. vgcreate, mdadm
- C. vgcreate, lvcreate
- D. lvcreate, vgcreate
- E. lvcreate, mdadm
正解: C
質問 46
Which sub command to crypsetupshows information about an encrypted LUKS partition?
- A. luksDebug
- B. luksLS
- C. luksShow
- D. luksInfo
- E. luksDump
正解: E
質問 47
What is the purpose of the smartd daemon?
- A. It is a user space daemon used for reading smart cards and integrated circuit chips.
- B. It monitors process activity and helps the kernel decide which processes to kill when the kernel overcommits.
- C. It monitors certain disk drives and attempts to predict when they will fail.
- D. It attempts to automatically repair file systems upon a failed file system check.
正解: C
質問 48
Which single command simulates a failed device within a RAID 5 array?
- A. mdadm /dev/md0 --offline /dev/sdc1
- B. mdadm --remove /dev/md0 /dev/sdd1
- C. mdadm --zero-superblock /dev/sdf3
- D. mdadm --fail /dev/md0 /dev/sdc1
- E. mdadm --force-fault /dev/md2 /dev/sde2
正解: D
質問 49
Which of the following is an example path to a Linux software RAID array?
- A. /dev/md1
- B. /dev/rd1
- C. /dev/raid0
- D. /dev/pr0
正解: A
質問 50
CORRECT TEXT
Which keyword is used in the /etc/inittab file to define the SysV-init default system runlevel?
正解:
解説:
initdefault
質問 51
What command is used to make an exact copy, at a single point in time, of a logical volume for backup purposes?
- A. lvsnap
- B. lvcreate
- C. lvsnapshot
- D. lvclone
- E. lvcopy
正解: B
質問 52
The following is an excerpt from the output of tcpdump -nli eth1:
1 3:03:17.277327 IP 192.168.123.5.1065 > 192.168.5.112.21: Flags [.], ack 1 (truncated)
1 3:03:17.598624 IP 192.168.5.112.21 > 192.168.123.5.1065: Flags [P.], seq (truncated) Which network service or protocol was used?
- A. FTP
- B. SSH
- C. HTTP
- D. DHCP
- E. DNS
正解: A
質問 53
Which of the following commands lists IPv4 addresses and MAC addresses of network nodes that the local system has seen on its directly connected IP networks?
- A. ifconfig
- B. arp
- C. iwlist
- D. ipadm
正解: B
解説:
Explanation/Reference:
質問 54
When a makefile is included in a source code package, what are commonly defined targets in the file?
- A. CFLAGS, CPPFLAGS, LIBS, LDFLAGS
- B. prefix, exec_prefix, bindir, mandir
- C. PATHS, DESTDIR, LIBS, LDFLAGS
- D. clean, install, uninstall
正解: D
質問 55
Which of the following is a side effect of extensive usage of swap space?
- A. The memory may become fragmented and slow down the access to memory pages.
However, this can be kept to a minimum by the regular use of memfrag -d. - B. The overall system performance may degrade because of heavy hard disk use and memory reorganization.
- C. Since processes always exist completely in either RAM or swap, regular RAM may become unused if the kernel does not move processes back from the swap space to memory.
- D. The root filesystem may become full because swap space is always located on the system root partition.
- E. Applications need to restart because their virtual memory addresses change to reflect memory relocation to the swap address area.
正解: B
質問 56
CORRECT TEXT
Which command turns an existing ext2 filesystem non-destructively into an ext3 filesystem? (Specify ONLY the command without any path or parameters.)
正解:
解説:
/sbin/tune2fs, tune2fs
質問 57
Which of the following commands adds a static IPv6 address to the network interface eth0?
- A. ip -6 add addr 2001:db8::1337/64 dev eth0
- B. ip add addr 2001:db8::1337/64 dev eth0
- C. ip addr add 2001:db8::1337/64 dev eth0
- D. ip addr add -6 2001:db8::1337/64 dev eth0
- E. ip -6 addr add new 2001:db8::1337/64 dev eth0
正解: E
解説:
Explanation/Reference:
質問 58
Which of the following commands creates a Btrfs subvolume named volumein/mnt?
- A. btrfs-subvolume create /mnt/volume
- B. btrfs create subvolume /mnt volume
- C. btrfs subvolume add -n volume /mnt
- D. btrfs subvolume new volume /mnt
- E. btrfs subvolume create /mnt/volume
正解: E
質問 59
The following is an excerpt from the output of tcpdump -nli eth1:
Which network service or protocol was used?
- A. FTP
- B. SSH
- C. HTTP
- D. DHCP
- E. DNS
正解: A
質問 60
A web application server contains 64GB of RAM and two swap partitions on normal hard disk drives, each with a size of 64 GB. Within the last month, the average number of user sessions on this server has grown by 20 percent. At the same time, the average usage of RAM increased from 65 to 75 percent, while the swap space is almost not used at all. It is expected that the number of user sessions will continue to increase by about 15 to 20 percent each month. Which of the following reactions would be appropriate in response to these observations? (Choose two.)
- A. Consider the installation of an additional application server to distribute the load if the expected growth continues over several months
- B. Move the web application's scripts and content a ram disk in order to ensure fast access and to avoid the need for swap space
- C. Delay any hardware upgrade until there is a significant consumption of swap space to ensure an efficient usage of the available hardware
- D. Update the hardware to increase the amount of available RAM to avoid using swap space
- E. Create a RAID 1 device on the two swap partitions to avoid data loss in case swap space has to be used in the future
正解: A,D
質問 61
Which commands below are useful to collect data about remote filesystem connections?
(Choose TWO correct answers.)
- A. sadf
- B. cifsiostat
- C. nfsiostat
- D. pidstat
正解: B,C
質問 62
Fill in the blank.
What keyword is missing in the following line from /etc/fstabin order to grant the user fredwrite access to the files in the vfat file system on /dev/sdb1:
/dev/sdb1 /mnt/usbflash vfat defaults, _________=fred, umask=022, 0 0
(Specify ONLY the option name without any path or parameters.)
正解:
解説:
uid
質問 63
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