[2023年11月05日]102-500問題集PDFとテストエンジン 試験問題
検証済みの102-500テスト問題集と解答で正確な199問題解答あります
質問 # 28
Which directory holds the files that configure the xinetd service when using several configuration files instead of an integrated configuration file? (Specify the full path to the directory.)
正解：
解説：
/etc/xinetd.d/, /etc/xinetd.d
質問 # 29
Which of the following tools used for DNS debugging, reports not only the response from the name server but also details about the query?
- A. dnslookup
- B. hostname
- C. dnsq
- D. dig
- E. zoneinfo
正解：D
質問 # 30
How many IP addresses can be used for unique hosts inside the IPv4 subnet 192.168.2.128/26?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
正解：A
質問 # 31
Given the following routing table:
How would an outgoing packet to the destination 192.168.2.150 be handled?
- A. It would be passed to the default router 192.168.178.1 on wlan0.
- B. It would be passed to the default router 255.255.255.0 on eth0.
- C. It would be directly transmitted on the device wlan0.
- D. It would be directly transmitted on the device eth0.
- E. It would be passed to the router 192.168.1.1 on eth0.
正解：E
質問 # 32
Which of the following commands can deconfigure a network interface?
- A. net
- B. ipdown
- C. netdown
- D. ifconfig
正解：D
質問 # 33
FILL BLANK
The presence of what file will temporarily prevent all users except root from logging into a system? (Specify the full name of the file, including path.)
正解：
解説：
/sbin/nologin
質問 # 34
FILL BLANK
Which command, available with all sendmail-compatible MTAs, is used to list the contents of the MTA's mail queue? (Specify only the command without any path or parameters.)
正解：
解説：
mailq
質問 # 35
What the echo $$ command?
- A. The process ID of the echo command.
- B. The process ID of the last command executed.
- C. The process ID for the following command.
- D. The process ID of the last command which has been placed in the background.
- E. The process ID of the current shell.
正解：E
質問 # 36
Which command can be used to investigate the properties for a particular window in X by clicking that window? (Specify ONLY the command without any path or parameters.)
正解：
解説：
/usr/bin/xwininfo, xwininfo
質問 # 37
Which of the following fields are available in the standard format of both the global /etc/crontab file as well as in user-specific crontab files? (Choose two.)
- A. Year
- B. Minute
- C. Effective group ID
- D. Username
- E. Command
正解：B、C
質問 # 38
Please specify the top directory containing the configuration files for the CUPS printing system. (Specify the full path to the directory.)
正解：
解説：
/etc/cups, /etc/cups/
質問 # 39
Which TWO statements about crontab are true?
- A. A cron daemon must run for each existing crontab.
- B. The cron daemon reloads crontab files automatically when necessary.
- C. hourly is the same as "0 * * * *".
- D. Every user may have their own crontab.
- E. Changing a crontab requires a reload/restart of the cron daemon.
正解：B、D
質問 # 40
Which of the following sections exists in a systemd timer unit?
- A. [Schedule]
- B. [Trigger]
- C. [Timer]
- D. [cron]
- E. [Events]
正解：C
質問 # 41
Which of the following is true about IPv6?
- A. IPv6 no longer supports broadcast addresses.
- B. IPv4 addresses can be used without any change with IPv6.
- C. IPv6 no longer supports multicast addresses.
- D. With IPv6, the TCP port numbers of most services have changed.
- E. For IPv6, UDP and TCP have been replaced by the Rapid Transmission Protocol RTP.
正解：A
質問 # 42
What is the difference between the commands test -e path and test -f path?
- A. Both options check the existence of the path. The -f option also confirms that it is a regular file.
- B. The -f option tests for a regular file. The -e option tests for an executable file.
- C. The -f option tests for a regular file. The -e option tests for an empty file.
- D. They are equivalent options with the same behaviour.
正解：A
質問 # 43
Which of the following commands lists all defined variables and functions within Bash?
- A. echo $ENV
- B. env -a
- C. env
- D. set
正解：D
質問 # 44
Which file, when using Sendmail or a similar MTA system, will allow a user to redirect all their mail to another address and is configurable by the user themselves?
- A. ~/.vacation
- B. /etc/mail/forwarders
- C. ~/.forward
- D. /etc/alias
- E. ~/.alias
正解：C
質問 # 45
What command is used to hold keys during a login session to be used for automatic authentication while logging in to other machines using ssh?
- A. ssh-agent
- B. ssh-keygen
- C. sshd
- D. ssh-add
正解：A
質問 # 46
What is the lowest numbered unprivileged TCP port? (Specify the number in digits only.)
正解：
解説：
1024
質問 # 47
Which keyword must be listed in the hosts option of the Name Service Switch configuration file in order to make host lookups consult the /etc/hosts file?
正解：
解説：
files
質問 # 48
What information related to a user account is modified using the chage command?
- A. Default ownership for new files
- B. Group membership
- C. Default permissions for new files
- D. Set of commands available to the user
- E. Password expiry information
正解：E
質問 # 49
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