[Q33-Q55] 201-450認証試験の問題集解答を提供しています [2022年02月]

201-450認証試験の問題集解答を提供しています [2022年02月]

更新された201-450試験練習テスト問題

Lpi 201-450 認定試験の出題範囲：

トピック	出題範囲
トピック 1	Configuring A Multi-Homed Network Device And Resolving Communication Problems
トピック 2	Manage And Or Query A 2.6.X, 3.X Or 4.X Kernel And Its Loadable Modules
トピック 3	Configure A Network Device To Implement Various Network Authentication Schemes
トピック 4	Utilize Kernel Components That Are Necessary To Specific Hardware, Hardware Drivers, System Resources And Requirements
トピック 5	Match Correlate System Symptoms With Likely Problems, Map Client Bandwidth Usage
トピック 6	Use Monitoring And Measurement Tools To Monitor It Infrastructure Usage Graph The Trend Of Capacity Usage
トピック 7	Configure A Kernel To Include Or Disable Specific Features Of The Linux Kernel As Necessary
トピック 8	Configure A Network Device To Be Able To Connect To A Local, Wired Or Wireless, And A Wide-Area Network
トピック 9	Estimate Throughput And Identify Bottlenecks In A System Including Networking
トピック 10	Linux Kernel As Needed, Updating And Noting Changes In A New Properly Maintain A Linux Filesystem Using System Utilities
トピック 11	Measure Cpu Usage, Memory Usage, Disk I O, Network I O, Firewalling And Routing Throughput
トピック 12	Identifying Stable And Development Kernels And Patches, As Well As Using Kernel Modules
トピック 13	Candidates Should Be Able To Identify And Correct Common Network Setup Issues
トピック 14	Awareness Of Monitoring Solutions Such As Icinga2, Nagios, Collectd, Mrtg And Cacti
トピック 15	Measure Hardware Resource And Network Bandwidth, Identify And Troubleshoot Resource Problems

 

質問 33
How can the label root be added to the ext2 filesystem on /dev/sda1?

• A. relabel /dev/sda1 root
• B. labelfs --device /dev/sda1 root
• C. tune2fs -L root /dev/sda1
• D. echo 'root' > /proc/fs/sda1/label

正解: C

 

質問 34
Under which of the following circumstances would the command ping output the string (DUP!)?

• A. When the ICMP packets are send to a broadcast address and multiple hosts respond.
• B. When the router responds to the ICMP packet in addition to the host receiving the ICMP packets.
• C. When the host sending the ICMP packet is the same host as the one receiving the ICMP packets.
• D. When the host being sent ICMP packets is on a different network.

正解: A

 

質問 35
In the below example output, which columns detail the percent of time the CPU spent running non-kernel code and the percent of time the CPU spent running kernel code?
(Choose TWO correct answers.)
# vmstat 1 100
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa
0 0 0 282120 134108 5797012 0 0 0 2 0 0 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1007 359 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1117 577 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1007 366 0 0 100 0

• A. id
• B. sy
• C. wa
• D. us

正解: B,D

 

質問 36
Which command will report information on memory usage, paging and block input/output?

• A. vmstat
• B. top
• C. memshow
• D. free
• E. ps

正解: A

 

質問 37
Which of the following configuration files are used by tcpwrapper?

• A. /etc/service.allow and /etc/service.deny
• B. /etc/hosts.allow and /etc/hosts.deny
• C. /etc/tcpwrapper.allow and /etc/tcpwrapper.deny
• D. /etc/tcpd.allow and etc/tcpd.deny

正解: B

 

質問 38
In case the file containing the Linux kernel is lost, what happens when the system is booting?

• A. Without a kernel a system cannot boot and, depending on the bootloader, an error is displayed.
• B. The bootloader mounts the root filesystem read-only and launches /bin/sh directly in order to allow the administrator to reinstall the kernel.
• C. Instead of the kernel, the initramfs is loaded and instructed to mount the root filesystem and reinstall the kernel from the original package or from source.
• D. The system starts normally since the bootloader copies the kernel to the master boot record of the hard disk.

正解: A

 

質問 39
What is the correct parameter to pass to the kernel at boot time to force it to use only one of the available processors?

• A. smpcpus=1
• B. usecpus=1
• C. vcpumx=1
• D. maxcpus=1

正解: D

 

質問 40
After changing the default runlevel in the SysV-init configuration file, the system boots in a different than intended runlevel. Where else could this different runlevel be defined?

• A. In the /etc/sysctl.conf
• B. In the boot loader configuration file
• C. In the /boot/initramfs file
• D. In the /etc/runlevel file
• E. In the /etc/rc.d/rc.local file

正解: B

 

質問 41
What are the options to node.startup in the iscsid.conf file? (Choose TWO correct answers.)

• A. manual
• B. initiate
• C. automatic
• D. login
• E. discover

正解: A,C

 

質問 42
CORRECT TEXT
What is the full path to the directory which contains the scripts (or links to the original scripts) to run while the system boots to SysV-init runlevel 2?

正解:

解説:
/etc/rc2.d, /etc/rc2.d/, /etc/init.d/rc2.d, /etc/init.d/rc2.d/

 

質問 43
In the following output, what is the 5 minute load average for the system?
# uptime
12:10:05 up 18 days, 19:00, 2 users, load average: 0.47, 24.71, 35.31

• A. 24.71
• B. 35.31
• C. 0.47
• D. There is no 5 minute interval. It is some value between 24.71 and 35.31.
• E. There is no 5 minute interval. It is some value between 0.47 and 24.71.

正解: A

 

質問 44
Which command is used to install a new LILO boot loader?

• A. lilo
• B. lilo-config
• C. install-lilo
• D. lilo-install

正解: A

 

質問 45
Which of the following commands shows capabilities and usable frequencies for the wireless interface wlan0?

• A. iw dev wlan0 info
• B. iw phy pyh0 info
• C. iw phy wlan0 show
• D. iw phy0 show
• E. iw dev wlan0 show

正解: B

 

質問 46
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 47
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 48
Which of the following commands by default provides the PIDs of the processes sorted by which are using the most CPU cycles on the Linux system?

• A. uptime
• B. vmstat
• C. top
• D. ps aux
• E. freemem

正解: C

 

質問 49
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 50
Fill in the blank.
What command ensures that the file systems are written to disk after a lot of write operations? (Specify ONLY the command without any path or parameters.)

正解:

解説:
sync

 

質問 51
A correctly formatted entry has been added to /etc/hosts.deny to prevent certain clients from connecting to a service but this is having no effect. What could be the cause of this?
(Choose TWO correct answers.)

• A. tcpd needs to be sent the HUP signal.
• B. There is a conflicting entry in /etc/hosts.allow.
• C. The machine needs to be restarted.
• D. The service needs to be restarted.
• E. The service does not support tcpwrapper.

正解: B,E

 

質問 52
Due to extreme system use, a Linux system requires some additional swap space. To initialize 5GB of additional swap space, which combination of commands should be used?

• A. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; swapon /tmp/swapfile
• B. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; swapon /tmp/swapfile
• C. touch -5G /tmp/swapfile; swapon /tmp/swapfile
• D. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; mount
  /tmp/swapfile
• E. mkswap /tmp/swapfile 512000; swapon /tmp/swapfile

正解: B

 

質問 53
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 54
What action should be performed after increasing the size of a logical volume?

• A. Run 1vresize
• B. Remount the logical volume
• C. Run vgresize
• D. Increase the size of the filesystem used for the logical volume

正解: D

 

質問 55
......

検証済みの201-450問題集と解答を使って100%一発合格保証で更新された問題集：https://drive.google.com/open?id=1OngiZt9-yQZ_iPG4bGfBHIxQSyR_y2NR

合格させるLPIC 2 201-450試験には162問があります：https://www.passtest.jp/Lpi/201-450-shiken.html