201-450更新された試験問題集で[2022年最新] 練習有効な試験問題集
201-450サンプルには正確で更新された問題
質問 28
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 29
CORRECT TEXT
Which command is used to create a ISO9660 filesystem? (Specify ONLY the command without any path or parameters.)
正解:
解説:
mkisofs, genisoimage
質問 30
In the following output of the command uptime, the load averages represent the system load averages for what time frames?
12:10:05 up 18 days, 19:00, 2 users, load average: 0.47, 24.71, 35.31
- A. 1, 15 and 30 minutes
- B. 15, 45 and 90 seconds
- C. 5, 20 and 25 seconds
- D. 1, 5 and 15 minutes
- E. 15, 30 and 60 minutes
正解: D
質問 31
Which of the filter keywords below could be used in the following command:
tcpdump -i eth0 ____________ 203.0.113.8
(Choose three.)
- A. dst
- B. ip
- C. ipv6
- D. host
- E. src
正解: A,D,E
解説:
Explanation/Reference:
質問 32
What option in the collectd configuration file is required in order to define what to start monitoring?
- A. LoadModule
- B. LoadPlugin
- C. Module
- D. Plugin
正解: B
質問 33
Which of the following tools are used to measure memory usage? (Choose THREE correct answers.)
- A. vmstat
- B. top
- C. pstree
- D. sar
- E. mpstat
正解: A,B,D
質問 34
CORRECT TEXT
After installing a compiled kernel, it can not find any modules that are needed to be loaded.
What make target was likely missed while installing the kernel?
正解:
解説:
make modules_install, modules_install
質問 35
What happens if the Linux kernel can't mount the root filesystem when booting?
- A. An error message is shown and the system boots in maintenance mode.
- B. An error message is shown showing which device couldn't be mounted or informing that init couldn't be found.
- C. An error message is shown stating that the corresponding kernel module couldn't be loaded.
- D. An error message is shown and the system reboots after a keypress.
- E. An error message is shown and the administrator is asked by the kernel to specify a valid root filesystem to continue the boot process.
正解: B
質問 36
What is the purpose of the command udevadm monitor?
- A. It communicates with D-Bus to setup new devices
- B. It monitors the /dev/ directory for new devices
- C. It monitors the udev process and prints performance statistics to the console
- D. It listens to kernel events produced by a udev rule and prints information to the console
正解: D
質問 37
Which of the following commands will securely copy the directory ./fyf/ to /var/tmp/ on the remote host deltaur using the remote user account kevin?
- A. rsync -a -u kevin -e ssh fyf/ deltaur:/var/tmp/
- B. rsync -a -e ssh kevin@deltaur:/var/tmp/ fyf/
- C. rsync -a -u kevin -e ssh deltaur:/var/tmp/ fyf/
- D. rsync -a -e ssh fyf/ kevin@deltaur:/var/tmp/
正解: D
質問 38
Which of the following are common Linux filesystem types used for root partitions?
(Choose THREE correct answers.)
- A. XFS
- B. NTFS
- C. ext4
- D. Btrfs
- E. VFAT
正解: A,C,D
質問 39
What is the purpose of the command vgextend?
- A. Extend a volume group's footprint on disk.
- B. Add physical volumes to an existing volume group.
- C. Create a volume group which uses all available space on disk.
- D. Increase the number of days between scheduled error checking.
正解: B
質問 40
Which of the following commands restores only those files containing lpiin their name from the archive lpifiles.tar.gz?
- A. tar xvzf lpifiles.tar.gz --wildcards '*lpi*'
- B. tar xvzwf lpifiles.tar.gz '*lpi*'
- C. tar -xvzf lpifiles.tar.gz --subdirs '*lpi*'
- D. tar xvzf lpifiles.tar.gz --globbing '*lpi*'
- E. tar -xvfz lpifiles.tar.gz --deep '*lpi*'
正解: A
質問 41
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 42
A system with SysV-init has a service installed called apache2. Which file controls the start and stop of this service and is referenced by the various runlevel directories?
- A. /etc/rc2.d/apache2
- B. /etc/init.d/apache2
- C. /etc/rc2.d/apache2.start
- D. /etc/rc2.d/70apache2
正解: B
質問 43
Which single command will simulate 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 44
CORRECT TEXT
Which program lists information about files and network connections opened by processes? (Specify ONLY the command without any path or parameters.)
正解:
解説:
lsof, /usr/bin/lsof
質問 45
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