XK0-006試験無料問題集（175題）「CompTIA Linux+ Certification 認定」

出題：1

A systems administrator is working on configuration changes and needs to replace a hostname in a specific file. Which of the following commands should the administrator use to complete this task?

A. sed -i 's/oldhostname/newhostname/' /etc/configuration.file

B. cat /etc/configuration.file | grep oldhostname > newhost.name

C. cut. -d oldhostname /etc/configuration.file | vi newhost.name

D. grep oldhostname /etc/configuration.file | awk '{print $1 newhostname}'

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：2

Users report that a Linux system is unresponsive and simple commands take too long to complete. The Linux administrator logs in to the system and sees the following:

Which of the following is the system experiencing?

A. High I/O wait times

B. High uptime

C. High CPU load

D. High latency

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：3

Which of the following utilities can securely delete a Linux directory from a filesystem and ensure it cannot be recovered?

A. unlink

B. rm

C. dd

D. shred

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：4

Which of the following cryptographic functions ensures a hard drive is encrypted when not in use?

A. GPG

B. OpenSSL

C. LUKS

D. PKI certificates

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：5

Which of the following is a reason multiple password changes on the same day are not allowed?

A. To enforce using multifactor authentication with stronger encryption algorithms instead of passwords

B. To stop users from circulating through the password history to return to the originally used password

C. To avoid brute-forced password attacks by making them too long to perform

D. To increase password complexity and the system's security

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：6

SIMULATION 4
Joe, a user, has taken a position previously held by Ann. As a systems administrator, you need to archive all the files from Ann's home directory and extract them into Joe's home directory.
INSTRUCTIONS
Within each tab, click on an object to form the appropriate commands. Command objects may only be used once, but the spacebar object may be used multiple times. Not all objects will be used.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

正解：

Archive tab:
tar -cvf /tmp/ann.tar -C /home ann
Extract tab:
tar -xvf /tmp/ann.tar -C /home/joe

出題：7

A Linux systems administrator is running an important maintenance task that consumes a large amount of CPU, causing other applications to slow. Which of the following actions should the administrator take to help alleviate the issue?

A. Increase the available CPU time with pidstat.

B. Run the maintenance task with nohup.

C. Lower the priority of the maintenance task with renice.

D. Execute the other applications with the bgutility.

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：8

An administrator has generated an RSA SSH key pair to log in to a remote server. After copying the public key and attempting to log in, the administrator sees the following message:
[email protected]: Permission denied (publickey,password)
After seeing the message, the administrator attempts to connect using ssh -v [email protected] and notices the following debug output:
debug1: send_pubkey_test: no mutual signature algorithm
Which of the following actions should the administrator take first to remediate this issue?

A. Update permissions on the /home/admin/.ssh directory to 700 on the remote server.

B. Create a new key pair by running ssh-keygen -t ecdsa.

C. Issue systemctl restart sshd on the local server.

D. Set PermitRootLogin yes in the /etc/ssh/sshd_config file.

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：9

An administrator needs to append the output of a Linux command to an existing file for later analysis. Which of the following command-line strings should the administrator use?

A. ls >> file.txt

B. echo ls | sed -i file.txt

C. tcc ls > awk file.txt

D. cat ls > file.txt

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：10

Which of the following filesystems contains non-persistent or volatile data?

A. /boot

B. /usr

C. /proc

D. /var

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：11

An administrator is testing whether an application on a server is available remotely under the IP address 192.168.88.188 on port 5000. Which of the following commands should the administrator use to verify the connectivity?

A. nc -v 192.168.88.188 5000

B. tcpdump 'host 192.168.88.188 and port 5000'

C. traceroute 192.168.88.188:5000

D. ssh 192.168.88.188 -P 5000

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

XK0-006試験無料問題集「CompTIA Linux+ Certification 認定」