更新された2022年11月02日 201-450試験問題集でPDF問題とテストエンジン [Q87-Q106]

更新された2022年11月02日 201-450試験問題集でPDF問題とテストエンジン

最新（2022)Lpi 201-450試験問題集

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	CPU使用率、メモリ使用量、ディスクI O、ネットワークI O、ファイアウォール、ルーティングスループットを測定する
トピック 2	監視および測定ツールを使用してインフラストラクチャの使用状況を監視 容量使用率の傾向をグラフ化
トピック 3	さまざまなネットワーク認証スキームを実装するためのネットワークデバイスの構成
トピック 4	システムの症状を問題の可能性と一致 相関させ、クライアントの帯域幅の使用状況をマッピングする
トピック 5	候補者は、一般的なネットワーク設定の問題を特定して修正できる必要があります
トピック 6	必要に応じてLinuxカーネルを更新し、システムユーティリティを使用してLinuxファイルシステムを新しい 適切に保守するための変更に注意する
トピック 7	ネットワークを含むシステムのスループットを見積もり、ボトルネックを特定する
トピック 8	必要に応じてLinuxカーネルの特定の機能を含めるか無効にするようにカーネルを構成します
トピック 9	ローカル、有線、またはワイヤレス、およびワイドエリアネットワークに接続できるようにネットワークデバイスを構成する
トピック 10	安定した開発用のカーネルとパッチを特定し、カーネルモジュールを使用する

 

質問 87
Which of the following commands will provide the PIDs of the processes sorted by which are using the most CPU cycles on the Linux system?

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

正解: A

 

質問 88
During booting, when the Linux kernel loads an initramfs file, which command from the initramfs will be executed first, if present?

• A. /initrd
• B. /init
• C. /linuxrc
• D. /rc.local
• E. /sbin/init

正解: B

 

質問 89
Which of the following init systems comes along with an own UEFI boot loader?

• A. OpenRC
• B. systemd
• C. Upstart
• D. launchd
• E. SysVinit

正解: B

解説:
Explanation

 

質問 90
The following is an excerpt from the output of tcpdump -nli eth1:

Which network service or protocol was used?

• A. SSH
• B. DNS
• C. DHCP
• D. HTTP
• E. FTP

正解: E

 

質問 91
How can the label root be added to the ext2 filesystem on /dev/sda1?

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

正解: C

 

質問 92
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 93
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. ipadm
• B. iwlist
• C. arp
• D. ifconfig

正解: C

 

質問 94
Which of the filter keywords below could be used in the following command:
tcpdump -i eth0 ____________ 203.0.113.8
(Choose three.)

• A. src
• B. ipv6
• C. dst
• D. host
• E. ip

正解: A,C,D

解説:
Explanation/Reference:

 

質問 95
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. top
• B. ps aux
• C. vmstat
• D. freemem
• E. uptime

正解: A

 

質問 96
Which file in /proc contains information on the status of local software RAID devices?

• A. /proc/mdstatus
• B. /proc/raid/status
• C. /proc/mdstat
• D. /proc/raidstatus
• E. /proc/raidstat

正解: C

 

質問 97
What is the purpose of an initramfs during the Linux system start?

• A. It copies the root file system's content to RAM to speed up the system and reduce writes to disk
• B. It loads required modules and starts sub sytems like LVM to make the root file system accessible to the kernel
• C. It moves the kernel from normal system memory to initram memory to speed up kernel access
• D. It creates a ram disk to store volatile data for directories like /tmpto reduce writes to disk

正解: B

 

質問 98
In order to gather performance data with sar over a longer period of time, which command should be run periodically from cron?

• A. sadf
• B. sarcron
• C. sa1
• D. sarec
• E. sarmon

正解: C

 

質問 99
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/access.allow and /etc/access.deny
• D. /etc/tcpwrapper.allow and /etc/tcpwrapper.deny
• E. /etc/tcpd.allow and etc/tcpd.deny

正解: B

 

質問 100
Fill in the blank.
Which is the main configuration file for the SystemV init process? (Specify the full name of the file, including path.)

正解:

解説:
/etc/inittab

 

質問 101
What information is found in the following excerpt from the file /proc/mdstat? (Choose two.)

• A. One of the disks in /dev/md0 has failed and a spare disk is used to recreate full redundancy
• B. The information [UU_] means, that the raid is missing one disk and is not fully redundant
• C. The information [3/2] means that 3 RAID disks belong to the array and 2 disks are spare. Together they equal the number of available disks
• D. The spare disk /dev/sda1 is used to restore full redundancy after the current recovery
• E. The device is using version 1.2 metadata to allow LILO and GRUB Legacy to use /dev/md0 as the boot partition. This would not have been necessary with GRUB2

正解: A,B

 

質問 102
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. SSH
• B. DNS
• C. DHCP
• D. HTTP
• E. FTP

正解: E

 

質問 103
Fill in the blank.
After installation of a self-compiled kernel, modules that need to be loaded cannot be found. What make target was likely missed while installing the kernel? (Specify ONLY the make target without any command or parameters.)

正解:

解説:
modules_install

 

質問 104
Fill in the blank.
The users of the local network complain that name resolution is not fast enough. Which command shows the time taken to resolve a DNS query? (Specify the command without path.)

正解:

解説:
dig

 

質問 105
In the output of sar -b, what does tps stand for?

• A. Transfers per second
• B. Terrabit per second
• C. Terrabyte per second
• D. Total data per second
• E. Traffic per second

正解: A

 

質問 106
......

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