Comptia Linux + 2023 Questions and answer - Part 28

1. What is true regarding the time in a Linux system?

A) A. The BIOS clock of a computer always indicates the current local time and time zone.
B) B. Each application must convert the Unix time to the current time zone which is usually done by using standard libraries.
C) C. When the system is on the network, each query for the current time leads to a new network connection to a time server.
D) D. When the system time changes, running processes must be restarted in order to get the correct time.



2. Which of the following is true regarding the mail queue of a mail server? (Choose TWO correct answers.)(Select 2answers)

A) A. The messages in the queue must be readable by all users as the queue may contain messages for several users.
B) B. According to the Filesystem Hierarchy Standard (FHS) the queue is located at /var/mail/spool.
C) C. There is exactly one mail queue per user which holds all new messages for that user before they are moved to other folders by the user's mail client.
D) D. The queue holds all messages that are processed by the mail server but have not yet been completely delivered.
E) E. The content of the mail queue can be queried by the command mailq.


3. Why should an NTP client maintain connections to several NTP servers?

A) A. To receive NTP information every second as each server transmits NTP pings every five seconds only.
B) B. To improve the precision of the time by comparing responses from several servers.
C) C. To not overload the remote server in case the local NTP time cache is not enabled.
D) D. To not lose contact with all NTP servers in case the client changes networks.



4. With syslog, what is a facility?

A) A. Facilities are different connection interfaces to syslog. Each facility has its own device in /dev/syslog/.
B) B. From syslog's point of view, each Unix process that issues messages is a facility.
C) C. Facilities describe the severity of a log message such as emerg or info.
D) D. When using remote logging, the hostname of the server that generated a message is called facility.
E) E. Facilities describe categories or groups of messages such as mail or auth.


5. What information can the lspci command display about the system hardware? (Choose THREE correct answers.)(Select 3answers)

A) A. Device IRQ settings
B) B. PCI bus speed
C) C. System battery type
D) D. Device vendor identification
E) E. Ethernet MAC address