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User Interface and Desktops
Here, students will be required to perform the following:
- Be familiar with accessibility concepts;
- Install or configure X11 and understand its architecture;
- Grasp the essence of the X Window configuration file;
- Possess the relevant knowledge of visual settings and assistive technology.
- Taking into account Wayland;
- Manage graphical desktops as well as their environments & protocols;
- Provide the Xorg configuration, e.g. keyboards;
NEW QUESTION 35
How many IP-addresses can be used for unique hosts inside the IPv4 subnet 192.168.2.128/28? (Specify the number only without any additional information.)
Answer:
Explanation:
14
NEW QUESTION 36
The correct crontab entry to execute the script chklog three times per month between 3 p.m. and 5 p.m.:
- A. 0 15,16,17 1 * * chklog
- B. 3 3,4,5 1 * * chklog
- C. * 3,4,5 1 * * chklog
- D. 3 15,16,17 * * * chklog
- E. * 15,16,17 1 * * chklog
Answer: A
NEW QUESTION 37
Which of the following IPv4 networks are reserved by IANA for private address assignment and private routing?
(Choose three.)
- A. 10.0.0.0/8
- B. 127.0.0.0/8
- C. 172.16.0.0/12
- D. 192.168.0.0/16
- E. 169.255.0.0/16
Answer: A,C,D
NEW QUESTION 38
Which of the following may occur as a consequence of using the command ifconfig? (Choose THREE correct answers.)
- A. The routing table may change.
- B. New name servers may be added to the resolver configuration.
- C. The system's host name may change.
- D. Network interfaces may become active or inactive.
- E. IP addresses may change.
Answer: A,D,E
NEW QUESTION 39
Which configuration file contains the default options for SSH clients?
- A. /etc/ssh/ssh
- B. /etc/ssh/ssh_config
- C. /etc/ssh/client
- D. /etc/ssh/ssh_client
- E. /etc/ssh/sshd_config
Answer: B
NEW QUESTION 40
Which file contains the data of the last change of a user's password?
- A. /etc/passwd
- B. /var/log/shadow
- C. /etc/gshadow
- D. /etc/shadow
- E. /etc/pwdlog
Answer: D
NEW QUESTION 41
Which of the following statements is true regarding systemd timer units?
- A. The command executed by the timer is specified in the timer unit's [Cmd]section.
- B. Timer units can only be defined within a service unit's file.
- C. Each systemd timer unit controls a specific systemd service unit.
- D. A dedicated system service, systemd-cron, handles the execution of timer units.
- E. Timer units only exist in the system scope and are not available for users.
Answer: C
Explanation:
Explanation/Reference:
NEW QUESTION 42
In which file, if present, must all users be listed that are allowed to use the cron scheduling system? (Specify the full name of the file, including path.)
Answer:
Explanation:
/etc/cron.allow
NEW QUESTION 43
What command can be used to generate syslog entries of any facility and priority? (supply just the command name without a path)
Answer:
Explanation:
logger
NEW QUESTION 44
In case neither cron.allow nor cron.deny exist in /etc/, which of the following is true?
- A. The cron daemon will refuse to start and report missing files in the system's logfile.
- B. Without additional configuration, no users may have user specific crontabs.
- C. Without additional configuration, all users may have user specific crontabs.
- D. When a user creates a user specific crontab the system administrator must approve it explicitly.
Answer: B
NEW QUESTION 45
Which commands can you use to change a user's account aging information? (Choose THREE correct answers.)
- A. usermod
- B. chattr
- C. passwd
- D. chage
- E. chsh
Answer: A,C,D
NEW QUESTION 46
What can be specified with useradd? (Choose two.)
- A. The absolute path to the user's home directory.
- B. The SSH keys used to login to the new account.
- C. The numeric user ID (UID) of the user.
- D. Which printers are available for the new user.
- E. Commands the user can run using sudo.
Answer: A,C
NEW QUESTION 47
On a dual boot system, every time the system is booted back into Linux the time has been set backward by one day. Which of the following commands will correct the problem?
- A. ntpdate pool.ntp.org
- B. date -d '+ 1 day'
- C. hwclock --systohc --localtime
- D. time hwclock
Answer: C
NEW QUESTION 48
Which of the following are syslog facilities? (Choose two.)
- A. local5
- B. postmaster
- C. accounting
- D. remote
- E. mail
Answer: A,E
Explanation:
Explanation
NEW QUESTION 49
Which command is used to set restrictions on the size of a core file that is created for a user when a program crashes?
- A. core
- B. ulimit
- C. edquota
- D. quota
Answer: B
NEW QUESTION 50
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.)
Answer:
Explanation:
mailq
NEW QUESTION 51
FILL BLANK
What command list the aliases defined in the current Bash shell? (Specify only the command without any path or parameters.)
Answer:
Explanation:
alias
NEW QUESTION 52
Which mechanism does ssh use to interact with the SSH agent?
- A. Starting ssh-agent as a child process for each ssh invocation.
- B. Connecting to port 2222 which is used by the system-wide SSH agent.
- C. Creating an alias replacing ssh with calls to ssh-agent.
- D. Using the fixed socket .ssh-agent/ipc.
- E. Evaluating environment variables such as SSH_AUTH_SOCK.
Answer: E
NEW QUESTION 53
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