[2024年07月28日]201-450認定ガイド問題と解答トレーニング [Q148-Q166]

質問 148
What should be done to ensure a client machine uses the recursive nameserver running on the IP address 192.168.0.1? (Choose TWO correct answers.)

質問 149
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?

質問 150
Which of the following commands shows capabilities and usable frequencies for the wireless interface wlan0?

質問 151
Fill in the blank.
Which is the main configuration file for the SystemV init process? (Specify the full name of the file, including path.)

質問 152
You have written a little startup script (/usr/local/bin/startup.sh) that should automatically execute when entering runlevel 3. According to the standards, how can this best be achieved?

質問 153
Which of the following commands creates a Btrfs subvolume named volumein/mnt?

質問 154
What is incorrect about these entries in /etc/hosts which could be causing host name lookup problems with host2?
host1 192.168.1.12
host2 192.168.1.12

質問 155
If all of the following files and/or symlinks exist in a SysV-init runlevel directory, which of the following will be executed first when booting the system directly into the runlevel?

質問 156
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?

質問 157
It is possible to configure kernel parameters at runtime (e.g. the maximum size of the shared memory segment (shmmax)). In which TWO ways can this be changed to 2GB (2147483648 Bytes) on a running system?

質問 158
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?

質問 159
CORRECT TEXT
According to the Filesystem Hierarchy Standard (FHS), what is the path to the Linux kernel source and may be a symbolic link to the real Linux source code? (Please specify the full path with no version information.)

質問 160
What command is used to create a file-system to be burned to a CD? (Please enter the command without the path or any options or parameters)

質問 161
In capacity planning exercises, which tools assist in listing and identifying processes of interest?
(Choose TWO correct answers.)

質問 162
CORRECT TEXT
A database application requires a maximum shared memory segment (shmmax) of 2GB (2147483648 Bytes). Which configuration file should be modified to set this kernel parameter permanently? (Specify the full name of the file, including path.)

質問 163
How would you run named inside a chroot jail as user nobody and group nogroup?

質問 164
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?

質問 165
In the following output, 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

質問 166
Which command reports information on memory usage, paging and block input/output?